LIT-18626-10-15

Read this manual carefully before operating thisoutboard motor.

OWNER’S MANUAL

F9.9T9.9

LIT-18626-10-156DR-28199-31-E0

U6DR31E0.book Tuesday, May 14, 2013 8:46 AM

ZMU07696

Les gaz d’échappement du moteur de ce produit contiennent des substances chimiques connues dans l’État de Californie pour provoquer le cancer, des anomalies congénitales et des troubles de la reproduction.

Read this manual carefully before operating this outboard motor. Keep thismanual onboard in a waterproof bag when boating. This manual should staywith the outboard motor if it is sold.

U6DR31E0.book Page 1 Tuesday, May 14, 2013 8:46 AM

Important manual informationEMU44140

To the ownerThank you for selecting a Yamaha outboardmotor. This Owner’s Manual contains infor-mation needed for proper operation, mainte-nance and care. A thorough understanding ofthese simple instructions will help you obtainmaximum enjoyment from your new Yamaha.If you have any question about the operationor maintenance of your outboard motor,please consult a Yamaha dealer.In this Owner’s Manual particularly importantinformation is distinguished in the followingways.

: This is the safety alert symbol. It is usedto alert you to potential personal injury haz-ards. Obey all safety messages that followthis symbol to avoid possible injury or death.

WARNINGEWM00781

A WARNING indicates a hazardous situa-tion which, if not avoided, could result indeath or serious injury.

NOTICEECM00701

A NOTICE indicates special precautionsthat must be taken to avoid damage to theoutboard motor or other property.

TIP:A TIP provides key information to make pro-cedures easier or clearer.

Yamaha continually seeks advancements inproduct design and quality. Therefore, whilethis manual contains the most current productinformation available at the time of printing,there may be minor discrepancies between

your machine and this manual. If there is anyquestion concerning this manual, please con-sult your Yamaha dealer.To ensure long product life, Yamaha recom-mends that you use the product and performthe specified periodic inspections and mainte-nance by correctly following the instructions inthe owner’s manual. Any damage resultingfrom neglect of these instructions is not cov-ered by warranty.Some countries have laws or regulations re-stricting users from taking the product out ofthe country where it was purchased, and itmay be impossible to register the product inthe destination country. Additionally, the war-ranty may not apply in certain regions. Whenplanning to take the product to another coun-try, consult the dealer where the product waspurchased for further information.If you purchased this outboard motor used,see your Yamaha dealer to have it registeredin your name in Yamaha records.

TIP:The F9.9MHB, F9.9EHB, F9.9EB, T9.9MHB,T9.9PHB, T9.9EB, T9.9PB, T9.9EHB and thestandard accessories are used as a base forthe explanations and illustrations in this man-ual. Therefore some items may not apply toevery model.EMU44150

F9.9, T9.9OWNER’S MANUAL

©2013 by Yamaha Motor Co., Ltd.1st Edition, April 2013

All rights reserved.Any reprinting or unauthorized usewithout the written permission of

Yamaha Motor Co., Ltd.is expressly prohibited.

Printed in Japan


Table of contents

Safety information.............................1Outboard motor safety .................... 1

Propeller ............................................. 1Rotating parts ..................................... 1Hot parts............................................. 1Electric shock ..................................... 1Power tilt............................................. 1Engine shut-off cord (lanyard) ............ 1Gasoline ............................................. 1Gasoline exposure and spills ............. 2Carbon monoxide ............................... 2Modifications ...................................... 2

Boating safety ................................. 2Alcohol and drugs............................... 2Personal flotation devices (PFDs) ...... 2People in the water............................. 2Passengers ........................................ 2Overloading ........................................ 2Avoid collisions................................... 3Weather.............................................. 3Accident reporting .............................. 3Boat education and training................ 3Passenger training ............................. 4Boating safety publications................. 4Laws and regulations ......................... 4

Boating organizations...................... 4Basic boating rules (Rules of the

road)............................................. 5Steering and sailing rules and sound

signals............................................. 5Rules when encountering vessels...... 5Other special situations ...................... 6

General information ..........................9Identification numbers record.......... 9

Outboard motor serial number ........... 9Key number ........................................ 9

Read manuals and labels.............. 10Warning labels.................................. 10

Specifications and requirements... 14Specifications ................................ 14Installation requirements ............... 16

Boat horsepower rating .................... 16Mounting outboard motor ................. 17

Remote control requirements........ 17Battery requirements..................... 17

Specifications of Battery................... 17Mounting battery............................... 17Without a rectifier or Rectifier

Regulator ...................................... 18Propeller selection ........................ 18Start-in-gear protection ................. 19Engine oil requirements ................ 19Fuel requirements ......................... 19

Gasoline ........................................... 19Gasoline Additives............................ 21

Anti-fouling paint ........................... 21Outboard motor disposal

requirements.............................. 21Emergency equipment .................. 22Emission control information......... 22

North American models .................... 22Star labels ........................................ 23

Components .................................... 25Components diagram.................... 25

Fuel tank........................................... 27Fuel joint ........................................... 28Fuel gauge ....................................... 28Pressure relief tab ............................ 28Fuel tank cap.................................... 28Air vent screw................................... 28Remote control box .......................... 28Remote control lever ........................ 28Neutral interlock trigger .................... 29Neutral throttle lever ......................... 29Choke switch .................................... 29Tiller handle...................................... 29Gear shift lever ................................. 30Throttle grip ...................................... 30Throttle indicator............................... 30Throttle friction adjuster .................... 30Engine shut-off cord (lanyard) and

clip................................................. 31Engine stop button ........................... 31Choke knob for pull type................... 32Manual starter handle....................... 32Starter button.................................... 32Main switch....................................... 32


Table of contents

Power tilt switch................................ 33Steering friction adjuster................... 33Trim rod (tilt pin) ............................... 34Tilt lock mechanism.......................... 34Tilt support knob............................... 34Tilt support bar ................................. 35Power tilt unit.................................... 35Cowling lock lever ............................ 35Flushing device ................................ 36Alert indicator ................................... 36

Instruments and indicators ............ 37Indicators....................................... 37

Low oil pressure-alert indicator ........ 37Engine control system.................... 38

Alert system .................................. 38Low oil pressure alert ....................... 38

Installation .......................................39Installation ..................................... 39

Mounting the outboard motor ........... 39Clamping the outboard motor........... 41

Operation ......................................... 42First-time operation ....................... 42

Fill engine oil .................................... 42Breaking in engine............................ 42Getting to know your boat ................ 42

Checks before starting engine ...... 42Fuel level .......................................... 42Removing top cowling ...................... 43Fuel system...................................... 43Controls ............................................ 43Engine shut-off cord (lanyard) .......... 43Engine oil.......................................... 44Outboard motor ................................ 44Flushing device ................................ 44Install top cowling ............................. 44Checking power tilt system............... 45Battery .............................................. 46

Filling fuel ...................................... 46Operating engine........................... 48

Sending fuel (portable tank) ............. 48Starting engine ................................. 49

Checks after starting engine ......... 57Cooling water ................................... 57

Warming up engine....................... 57Manual start and electric start

models .......................................... 57Checks after engine warm up ....... 57

Shifting ............................................. 57Stop switches ................................... 57

Shifting .......................................... 58Stopping boat................................ 59Stopping engine............................ 59

Procedure......................................... 59Procedure......................................... 60

Trimming outboard motor.............. 61Adjusting trim angle for manual tilt

models .......................................... 61Adjusting trim angle (power tilt

models) ......................................... 62Adjusting boat trim............................ 63

Tilting up and down....................... 63Procedure for tilting up (manual tilt

models) ......................................... 64Procedure for tilting up (power tilt

models) ......................................... 65Procedure for tilting down (manual

tilt models)..................................... 66Procedure for tilting down (power tilt

models) ......................................... 66Shallow water................................ 67

Cruising in shallow water (manual tilt models)..................................... 67

Power tilt models .............................. 69Operating in other conditions ........ 70

Maintenance .................................... 71Transporting and storing outboard

motor.......................................... 71Dismounting the outboard motor ...... 71Storing outboard motor..................... 73Procedure......................................... 73Lubrication........................................ 74Cleaning and anticorrosion

measures ...................................... 74Flushing power unit .......................... 75Cleaning the outboard motor ............ 76Checking painted surface of

outboard motor.............................. 76


Table of contents

Periodic maintenance.................... 76Replacement parts ........................... 77Maintenance interval guidelines ....... 77Maintenance chart 1......................... 78Maintenance chart 2......................... 80Greasing........................................... 81Cleaning and adjusting spark plug ... 82Checking fuel filter............................ 83Inspecting idle speed........................ 83Changing engine oil.......................... 83Inspecting wiring and connectors ..... 85Checking propeller ........................... 85Removing propeller .......................... 86Installing propeller ............................ 87Changing gear oil ............................. 87Inspecting and replacing anode(s) ... 89Checking battery (for electric start

models) ......................................... 89Connecting the battery ..................... 90Disconnecting the battery................. 90

Trouble Recovery............................ 91Troubleshooting ............................ 91Temporary action in emergency.... 94

Impact damage................................. 94Replacing fuse.................................. 94Power tilt will not operate ................. 95Starter will not operate ..................... 95Emergency starting engine............... 96

Engine fails to operate .................. 97Emergency engine operation ........... 97

Treatment of submerged motor..... 97Consumer information.................... 98

YAMAHA FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY............................... 98

IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE U.S.A. OR CANADA ........ 100


1

Safety informationEMU33622

Outboard motor safetyObserve these precautions at all times.EMU36501

PropellerPeople can be injured or killed if they come incontact with the propeller. The propeller cankeep moving even when the motor is in neu-tral, and sharp edges of the propeller can cuteven when stationary.● Stop the engine when a person is in the wa-

ter near you.● Keep people out of reach of the propeller,

even when the engine is off.EMU33630

Rotating partsHands, feet, hair, jewelry, clothing, PFDstraps, etc. can become entangled with inter-nal rotating parts of the engine, resulting in se-rious injury or death.Keep the top cowling in place whenever pos-sible. Do not remove or replace the cowlingwith the engine running.Only operate the engine with the cowling re-moved according to the specific instructions inthe manual. Keep hands, feet, hair, jewelry,clothing, PFD straps, etc. away from any ex-posed moving parts.EMU33640

Hot partsDuring and after operation, engine parts arehot enough to cause burns. Avoid touchingany parts under the top cowling until the en-gine has cooled.EMU33650

Electric shockDo not touch any electrical parts while startingor operating the engine. They can causeshock or electrocution.

EMU34790

Power tiltBody parts can be crushed between the mo-tor and the clamp bracket when the motor istrimmed or tilted. Keep body parts out of thisarea at all times. Be sure no one is in this areabefore operating the power tilt mechanism.The power tilt switches operate even whenthe main switch is off. Keep people be awayfrom the switches whenever working aroundthe motor.Never get under the lower unit while it is tilted,even when the tilt support lever or knob islocked. Severe injury could occur if the out-board motor accidentally falls.EMU33671

Engine shut-off cord (lanyard)Attach the engine shut-off cord so that the en-gine stops if the operator falls overboard orleaves the helm. This prevents the boat fromrunning away under power and leaving peo-ple stranded, or running over people or ob-jects.Always attach the engine shut-off cord to asecure place on your clothing or your arm orleg while operating. Do not remove it to leavethe helm while the boat is moving. Do not at-tach the cord to clothing that could tear loose,or route the cord where it could become en-tangled, preventing it from functioning.Do not route the cord where it is likely to beaccidentally pulled out. If the cord is pulledduring operation, the engine will shut off andyou will lose most steering control. The boatcould slow rapidly, throwing people and ob-jects forward.EMU33810

GasolineGasoline and its vapors are highly flam-mable and explosive. Always, refuel accord-ing to the procedure on page 48 to reduce therisk of fire and explosion.


Safety information

2

EMU33820

Gasoline exposure and spillsTake care not to spill gasoline. If gasolinespills, wipe it up immediately with dry rags.Dispose of rags properly.If any gasoline spills onto your skin, immedi-ately wash with soap and water. Changeclothing if gasoline spills on it.If you swallow gasoline, inhale a lot of gaso-line vapor, or get gasoline in your eyes, getimmediate medical attention. Never siphonfuel by mouth.EMU33900

Carbon monoxideThis product emits exhaust gases which con-tain carbon monoxide, a colorless, odorlessgas which may cause brain damage or deathwhen inhaled. Symptoms include nausea,dizziness, and drowsiness. Keep cockpit andcabin areas well ventilated. Avoid blocking ex-haust outlets.EMU33780

ModificationsDo not attempt to modify this outboard motor.Modifications to your outboard motor may re-duce safety and reliability, and render the out-board unsafe or illegal to use.EMU33740

Boating safetyThis section includes a few of the many im-portant safety precautions that you should fol-low when boating.EMU33710

Alcohol and drugsNever operate after drinking alcohol or takingdrugs. Intoxication is one of the most commonfactors contributing to boating fatalities.EMU40280

Personal flotation devices (PFDs)Have an approved PFD on board for every oc-cupant. Yamaha recommends that you mustwear a PFD whenever boating. At a minimum,children and non-swimmers should always

wear PFDs, and everyone should wear PFDswhen there are potentially hazardous boatingconditions.EMU33731

People in the waterAlways watch carefully for people in the wa-ter, such as swimmers, skiers, or divers,whenever the engine is running. When some-one is in the water near the boat, shift intoneutral and stop the engine.Stay away from swimming areas. Swimmerscan be hard to see.The propeller can keep moving even whenthe motor is in neutral. Stop the engine whena person is in the water near you.EMU33751

PassengersConsult your boat manufacturer’s instructionsfor details about appropriate passenger loca-tions in your boat and be sure all passengersare positioned properly before acceleratingand when operating above an idle speed.Standing or sitting in non-designated loca-tions may result in being thrown either over-board or within the boat due to waves, wakes,or sudden changes in speed or direction.Even when people are positioned properly,alert your passengers if you must make anyunusual maneuver. Always avoid jumpingwaves or wakes.EMU33761

OverloadingDo not overload the boat. Consult the boat ca-pacity plate or boat manufacturer for maxi-mum weight and number of passengers. Besure that weight is properly distributed ac-cording to the boat manufacturer’s instruc-tions. Overloading or incorrect weightdistribution can compromise the boats han-dling and lead to an accident, capsizing orswamping.


Safety information

3

EMU33772

Avoid collisionsScan constantly for people, objects, and otherboats. Be alert for conditions that limit yourvisibility or block your vision of others.

Operate defensively at safe speeds and keepa safe distance away from people, objects,and other boats.● Do not follow directly behind other boats or

waterskiers.● Avoid sharp turns or other maneuvers that

make it hard for others to avoid you or un-derstand where you are going.

● Avoid areas with submerged objects orshallow water.

● Ride within your limits and avoid aggressivemaneuvers to reduce the risk of loss of con-trol, ejection, and collision.

● Take early action to avoid collisions. Re-member, boats do not have brakes, andstopping the engine or reducing throttle canreduce the ability to steer. If you are notsure that you can stop in time before hittingan obstacle, apply throttle and turn in anoth-er direction.

EMU33790

WeatherStay informed about the weather. Checkweather forecasts before boating. Avoid boat-ing in hazardous weather.

EMU44160

Accident reportingBoat operators are required by law to file aBoating Accident Report with their boating lawenforcement agency if their boat is involved inany of the following accidents:1. There is loss of life or probable loss of life.2. There is personal injury that requires

medical attention beyond first aid.3. There is property damage to boats or oth-

er property over a certain amount.4. There is complete loss of a boat.Contact local law enforcement personnel if areport is necessary.EMU44170

Boat education and trainingFor U.S.A.Operators should take a boating safetycourse. This may be required in your state.Many of the organizations listed in the nextsection can provide information about cours-es in your area.You may also want to consider an Internet-based program for basic boater education.The Online Boating Safety Course providedby the BoatU.S. Foundation, is approved bythe National Association of State Boating LawAdministrators (NASBLA) and recognized bythe United States Coast Guard. Most, but notall, states accept this course to meet theirminimum requirements. While it cannot re-place an in-depth course such as one offeredby the U.S. Coast Guard, U.S. Power Squad-ron, or other organization, this online coursedoes provide a general overview of the basicsin boating safety, requirements, navigation,and operation. Upon successful completion ofthe course, the user can download a certifi-cate of completion immediately or, for a smallcharge, request one by mail. To take this freecourse, go to boatus.org.

ZMU06025


Safety information

4

For CanadaAll operators of pleasure craft must illustratecompetency by means of a Pleasure CraftOperators Card with the exception of Person-al Water Craft used for rental purposes whichrequire a rental checklist be completed. Plea-sure Craft Operators Cards can be obtainedfollowing the completion of a competencycourse, with an on-line option. Details can befound on Transport Canada’s website.www.tc.gc.caEMU33880

Passenger trainingMake sure at least one other passenger istrained to operate the boat in the event of anemergency.EMU33890

Boating safety publicationsBe informed about boating safety. Additionalpublications and information can be obtainedfrom many boating organizations.EMU33590

Laws and regulationsKnow the marine laws and regulations whereyou will be boating- and obey them. Severalsets of rules prevail according to geographiclocation, but all are basically the same as theInternational Rules of the Road. The rulespresented in the following section are con-densed- and have been provided for yourconvenience only.Contact the U.S. Coast Guard, the NationalAssociation of State Boating Law Administra-tors, or your local Power Squadron for a com-plete set of rules governing the waters inwhich you will be using your boat.EMU44180

Boating organizationsThe following organizations provide boatingsafety training and information about boatingsafety and laws.

In the U.S.A.United States Coast GuardConsumer Affairs Staff (G-BC)Office of Boating, Public, and Consumer Af-fairsU.S. Coast Guard HeadquartersWashington, D.C. 20593-0001http://www.uscgboating.org/

United States Power Squadrons1-888-FOR-USPS (1-888-367-8777)http://www.usps.org/

Boat Owners Association of The UnitedStates1-800-336-BOAT (1-800-336-2628)http://www.boatus.com/

National Association of State Boating LawAdministrators (NASBLA)1500 Leestown Road, Suite 330Lexington, KY 40511 859-225-9497http://www.nasbla.org/

National Marine Manufacturers Associa-tion (NMMA)200 East Randolph DriveSuite 5100Chicago, IL 60601http://www.nmma.org/

Marine Retailers Association of America155 N. Michigan Ave. Chicago,IL 60304http://www.mraa.com/

In the CanadaNational Marine Manufacturers Associa-tion Canada14 McEwan DriveSuite 8


Safety information

5

Bolton, ONL7E 1H1http://www.nmma.org/

EMU33691

Basic boating rules (Rules of the road)

Just as there are rules that apply when youare driving on streets and highways, there arewaterway rules that apply when you are driv-ing your boat. These rules are used interna-tionally. (For U.S.A.: and are also enforced bythe United States Coast Guard and localagencies.) You should be aware of theserules, and follow them whenever you encoun-ter another vessel on the water.EMU33700

Steering and sailing rules and sound signalsWhenever two vessels on the water meet oneanother, one vessel has the right-of-way; it iscalled the “stand-on” vessel. The vessel thatdoes not have the right-of-way is called the“give-way” or “burdened”vessel. These rulesdetermine which vessel has the right-of-way,and what each vessel should do.

Stand-on vesselThe vessel with the right-of-way has the dutyto continue its course and speed, except toavoid an immediate collision. When you main-tain your direction and speed, the other vesselwill be able to determine how best to avoidyou.

Give-way vesselThe vessel that does not have the right-of-way has the duty to take positive and timelyaction to stay out of the way of the Stand-Onvessel. Normally, you should not cross in frontof the vessel with the right-of-way. You shouldslow down or change directions briefly and

pass behind the other vessel. You should al-ways move in such a way that the operator ofthe other vessel can see what you are doing.“ The general prudential rule ”This rule is called Rule 2 in the InternationalRules and says,“ In obeying and construing these rules dueregard shall be had to all dangers of naviga-tion and collision, and to any special circum-stances, which may render a departure fromthe above rules necessary in order to avoidimmediate danger.”In other words, follow the standard rules ex-cept when a collision will occur unless bothvessels try to avoid each other. If that is thecase, both vessels become “ Give-Way ” ves-sels.EMU25521

Rules when encountering vesselsThere are three main situations that you mayencounter with other vessels which could leadto a collision unless the Steering Rules are fol-lowed:Meeting: (you are approaching another ves-sel head-on)Crossing: (you are traveling across the othervessel’s path)Overtaking: (you are passing or beingpassed by another vessel)In the following illustration, your boat is in thecenter. You should give the right-of-way toany vessels shown in white area (you are theGive-Way vessel). Any vessels in the shadedarea must yield to you (they are the Give-Wayvessels). Both you and the meeting vesselmust alter course to avoid each other.


Safety information

6

MeetingIf you are meeting another power vessel headon, and are close enough to run the risk of col-lision, neither of you has the right-of-way Bothof you should alter course to avoid an acci-dent. You should keep the other vessel onyour port (left) side. This rule doesn’t apply ifboth of you will clear one another if you con-tinue on your set course and speed.

CrossingWhen two power driven vessels are crossingeach other’s path close enough to run the riskof collision, the vessel which has the other onthe starboard (right) side must keep out of theway of the other. If the other vessel is on yourright, you must keep out of its way; you are theGive-Way vessel. If the other vessel is onyour port (left) side, remember that youshould maintain course and direction, provid-ed the other vessel gives you the right-of-wayas it should.

OvertakingIf you are passing another vessel, you are the“Give-Way” vessel. This means that the othervessel is expected to maintain its course andspeed. You must stay out of its way until youare clear of it. Likewise, if another vessel ispassing you, you should maintain your speedand direction so that the other vessel cansteer itself around you.EMU25531

Other special situationsThere are three other rules you should beaware of when driving your boat around othervessels.Narrow channels and bendsWhen navigating in narrow channels, youshould keep to the right when it is safe andpractical to do so. If the operator of a power-driven vessel is preparing to go around abend that may obstruct the view of other watervessels, the operator should sound a pro-longed blast on the whistle (4 to 6 seconds). Ifanother vessel is around the bend, it tooshould sound the whistle. Even if no reply isheard, however, the vessel should still pro-ceed around the bend with caution. If you nav-igate such waters with your boat, you willneed to carry a portable air horn, availablefrom local marine supply stores.


Safety information

7

Fishing vessel right-of-wayAll vessels that are fishing with nets, lines ortrawls are considered to be “fishing vessels”under the International Rules. Vessels withtrolling lines are not considered fishing ves-sels. Fishing vessels have the right-of-way re-gardless of position. Fishing vessels cannot,however, impede the passage of other ves-sels in narrow channels.Sailing vessel right-of-waySailing vessels should normally be given theright-of-way. The exceptions to this are:1. When the sailing vessel is overtaking the

power-driven vessel, the power-drivenvessel has the right-of-way.

2. Sailing vessels should keep clear of anyfishing vessel.

3. In a narrow channel, a sailing vesselshould not hamper the safe passage of apower-driven vessel that can navigateonly in such a channel.

Reading buoys and other markersThe waters of the United States are markedfor safe navigation by the lateral system ofbuoyage. Simply put, buoys and markershave an arrangement of shapes, colors, num-bers and lights to show which side of the buoya boater should pass on when navigating in aparticular direction. The markings on thesebuoys are oriented from the perspective of be-ing entered from seaward (the boater is goingtowards the port). This means that red buoysare passed on the starboard (right) side whenproceeding from open water into port, andblack buoys are to port (left) side. When navi-gating out of port, your position with respect tothe buoys should be reversed; red buoysshould be to port and black buoys to star-board.

Many bodies of water used by boaters are en-tirely within the boundaries of a particularstate. The Uniform State Waterway MarkingSystem has been devised for these waters.This system uses buoys and signs with dis-tinctive shapes and colors to show regulatoryor advisory information. These markers arewhite with black letters and orange boarders.They signify speed zones, restricted areas,danger areas, and general information.Remember, markings may vary by geograph-ic location. Always consult local boating au-thorities before driving your boat in unfamiliarwaters.


Safety information

8

ZMU01708


General information

9

EMU25171

Identification numbers recordEMU25184

Outboard motor serial numberThe outboard motor serial number is stampedon the label attached to the port side of theclamp bracket.Record your outboard motor serial number inthe spaces provided to assist you in orderingspare parts from your Yamaha dealer or forreference in case your outboard motor is sto-len. EMU25191

Key numberIf a main key switch is equipped with the mo-tor, the key identification number is stampedon your key as shown in the illustration.Record this number in the space provided forreference in case you need a new key.

1. Outboard motor serial number location

1. Outboard motor serial number location

1

ZMU05335

1

ZMU05336

1. Key number


General information

10

EMU33523

Read manuals and labelsBefore operating or working on this outboard motor:● Read this manual.● Read any manuals supplied with the boat.● Read all labels on the outboard motor and the boat.If you need any additional information, contact your Yamaha dealer.EMU33832

Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements.F9.9MHB, F9.9EHB, T9.9MHB, T9.9PHB, T9.9EHB


General information

11

F9.9EB, T9.9EB, T9.9PB


General information

12

EMU33912

Contents of labelsThe above warning labels mean as follows.1

WARNINGEWM01691

Emergency starting does not have start-in-gear protection. Ensure shift control isin neutral before starting engine.

2

WARNINGEWM01681

● Keep hands, hair, and clothing awayfrom rotating parts while the engine isrunning.

● Do not touch or remove electrical partswhen starting or during operation.

3

WARNINGEWM01671

● Read Owner’s Manuals and labels.● Wear an approved personal flotation de-

vice (PFD).● Attach engine shut-off cord (lanyard) to

your PFD, arm, or leg so the enginestops if you accidentally leave the helm,which could prevent a runaway boat.

1 2

3

ZMU05740


General information

13

EMU35132

SymbolsThe following symbols mean as follows.

Notice/Warning

Read Owner’s Manual

Hazard caused by continuous rotation

Electrical hazard

ZMU05696

ZMU05664

ZMU05665

ZMU05666


Specifications and requirements

14

EMU34521

SpecificationsTIP:“(AL)” stated in the specification data belowrepresents the numerical value for the alumi-num propeller installed.Likewise, “(SUS)” represents the value forstainless steel propeller installed and “(PL)”for plastic propeller installed.EMU2821S

Dimension and weight:Overall length:

F9.9EB 560 mm (22.0 in)F9.9EHB 983 mm (38.7 in)F9.9MHB 983 mm (38.7 in)T9.9EB 560 mm (22.0 in)T9.9EHB 1043 mm (41.1 in)T9.9MHB 1043 mm (41.1 in)T9.9PB 560 mm (22.0 in)T9.9PHB 1043 mm (41.1 in)

Overall width:F9.9EB 333 mm (13.1 in)F9.9EHB 357 mm (14.1 in)F9.9MHB 357 mm (14.1 in)T9.9EB 333 mm (13.1 in)T9.9EHB 371 mm (14.6 in)T9.9MHB 355 mm (14.0 in)T9.9PB 333 mm (13.1 in)T9.9PHB 355 mm (14.0 in)

Overall height S:F9.9EHB 1008 mm (39.7 in)F9.9MHB 1008 mm (39.7 in)

Overall height L:F9.9EB 1135 mm (44.7 in)F9.9EHB 1135 mm (44.7 in)F9.9MHB 1135 mm (44.7 in)T9.9EB 1200 mm (47.2 in)T9.9EHB 1195 mm (47.0 in)T9.9MHB 1200 mm (47.2 in)T9.9PB 1200 mm (47.2 in)T9.9PHB 1195 mm (47.0 in)

Overall height X:T9.9EB 1268 mm (49.9 in)T9.9EHB 1263 mm (49.7 in)T9.9PB 1263 mm (49.7 in)T9.9PHB 1263 mm (49.7 in)

Motor transom height S:F9.9EHB 431 mm (17.0 in)F9.9MHB 431 mm (17.0 in)

Motor transom height L:F9.9EB 558 mm (22.0 in)F9.9EHB 558 mm (22.0 in)F9.9MHB 558 mm (22.0 in)T9.9EB 552 mm (21.7 in)T9.9EHB 552 mm (21.7 in)T9.9MHB 552 mm (21.7 in)T9.9PB 557 mm (21.9 in)T9.9PHB 557 mm (21.9 in)

Motor transom height X:T9.9EB 620 mm (24.4 in)T9.9EHB 620 mm (24.4 in)T9.9PB 625 mm (24.6 in)T9.9PHB 625 mm (24.6 in)

Dry weight (AL) S:F9.9EHB 44 kg (97 lb)F9.9MHB 40 kg (88 lb)

Dry weight (AL) L:F9.9EB 43 kg (95 lb)F9.9EHB 45 kg (99 lb)F9.9MHB 41 kg (90 lb)T9.9EB 44 kg (97 lb)T9.9EHB 47 kg (104 lb)T9.9MHB 43 kg (95 lb)T9.9PB 49 kg (108 lb)T9.9PHB 52 kg (115 lb)

Dry weight (AL) X:T9.9EB 45 kg (99 lb)T9.9EHB 48 kg (106 lb)T9.9PB 50 kg (110 lb)T9.9PHB 53 kg (117 lb)



15

Performance:Full throttle operating range:

5000–6000 r/minRated power:

7.3 kW (9.9 HP)Idle speed (in neutral):

1000-1100 r/minPower unit:

Type:4-stroke SOHC L2 4valves

Total displacement:212 cm³ (12.9 c.i.)

Bore × stroke:56.0 × 43.0 mm (2.20 × 1.69 in)

Ignition system:CDI

Spark plug (NGK):BR6HS-10

Spark plug gap:0.9–1.0 mm (0.035–0.039 in)

Steering system:F9.9EB Remote steeringF9.9EHB Tiller handleF9.9MHB Tiller handleT9.9EB Remote steeringT9.9EHB Tiller handleT9.9MHB Tiller handleT9.9PB Remote steeringT9.9PHB Tiller handle

Starting system:F9.9EB Electric starterF9.9EHB Electric starterF9.9MHB Manual starterT9.9EB Electric starterT9.9EHB Manual starter and Electric starterT9.9MHB Manual starterT9.9PB Electric starterT9.9PHB Electric starter

Starting carburetion system:Choke valve

Valve clearance IN (cold engine):0.15–0.20 mm (0.0059–0.0079 in)

Valve clearance EX (cold engine):0.20–0.25 mm (0.0079–0.0098 in)

Cold cranking amps (CCA/SAE):F9.9EB 245–433 AF9.9EHB 245–433 AT9.9EB 245–433 AT9.9EHB 245–433 AT9.9PB 245–433 AT9.9PHB 245–433 A

Marine cranking amps (MCA/ABYC):F9.9EB 323–520 AF9.9EHB 323–520 AT9.9EB 323–520 AT9.9EHB 323–520 AT9.9PB 323–520 AT9.9PHB 323–520 A

Min. reserve capacity (RC/SAE):F9.9EB 52 minutesF9.9EHB 52 minutesT9.9EB 52 minutesT9.9EHB 52 minutesT9.9PB 52 minutesT9.9PHB 52 minutes

Maximum generator output:6 A

Lower unit:Gear shift positions:

Forward-neutral-reverseGear ratio:

F9.9EB 2.08(27/13)F9.9EHB 2.08(27/13)F9.9MHB 2.08(27/13)T9.9EB 2.92(38/13)T9.9EHB 2.92(38/13)T9.9MHB 2.92(38/13)T9.9PB 2.92(38/13)T9.9PHB 2.92(38/13)



16

Trim and tilt system:F9.9EB Manual tiltF9.9EHB Manual tiltF9.9MHB Manual tiltT9.9EB Manual tiltT9.9EHB Manual tiltT9.9MHB Manual tiltT9.9PB Power tiltT9.9PHB Power tilt

Propeller mark:F9.9EB NF9.9EHB NF9.9MHB NT9.9EB RT9.9EHB RT9.9MHB RT9.9PB RT9.9PHB R

Fuel and oil:Recommended fuel:

Regular unleaded gasolineMin. pump octane number (PON):

86Fuel tank capacity:

12 L (3.17 US gal, 2.64 Imp.gal)Recommended engine oil:

YAMALUBE 4M FC-W or 4-stroke outboard motor oil

Recommended engine oil grade 1:SAE 10W-30/10W-40/5W-30 API SE/SF/SG/SH/SJ/SL

Engine oil quantity:0.8 L (0.85 US qt, 0.70 Imp.qt)

Lubrication system:Wet sump

Recommended gear oil:Yamalube Marine Gearcase Lube or Hypoid gear oil

Recommended gear oil grade:SAE 90 API GL-4

Gear oil quantity:F9.9EB 0.150 L (0.159 US qt, 0.132 Imp.qt)F9.9EHB 0.150 L (0.159 US qt, 0.132 Imp.qt)F9.9MHB 0.150 L (0.159 US qt, 0.132 Imp.qt)T9.9EB 0.370 L (0.391 US qt, 0.326 Imp.qt)T9.9EHB 0.370 L (0.391 US qt, 0.326 Imp.qt)T9.9MHB 0.370 L (0.391 US qt, 0.326 Imp.qt)T9.9PB 0.370 L (0.391 US qt, 0.326 Imp.qt)T9.9PHB 0.370 L (0.391 US qt, 0.326 Imp.qt)

Tightening torque:Spark plug:

25 Nm (2.55 kgf-m, 18.4 ft-lb)Propeller nut:

F9.9EB 17 Nm (1.73 kgf-m, 12.5 ft-lb)F9.9EHB 17 Nm (1.73 kgf-m, 12.5 ft-lb)F9.9MHB 17 Nm (1.73 kgf-m, 12.5 ft-lb)T9.9EB 21 Nm (2.14 kgf-m, 15.5 ft-lb)T9.9EHB 21 Nm (2.14 kgf-m, 15.5 ft-lb)T9.9MHB 21 Nm (2.14 kgf-m, 15.5 ft-lb)T9.9PB 21 Nm (2.14 kgf-m, 15.5 ft-lb)T9.9PHB 21 Nm (2.14 kgf-m, 15.5 ft-lb)

Engine oil drain bolt:24 Nm (2.45 kgf-m, 17.7 ft-lb)

EMU33554

Installation requirementsEMU40480

Boat horsepower rating

WARNINGEWM01560

Overpowering a boat can cause severe in-stability.

Before mounting the outboard motor, checkthat the horsepower of the outboard motordoes not exceed the maximum horsepower



17

rating on the capacity plate of the boat. If theboat does not have a capacity plate, consultthe boat manufacturer.EMU40490

Mounting outboard motor

WARNINGEWM02500

● Improper mounting of the outboard mo-tor could result in hazardous conditionssuch as poor handling, loss of control,or fire hazards.

● Because the outboard motor is veryheavy, special equipment and training isrequired to mount it safely.

Your dealer or other person experienced inproper rigging should mount the outboard mo-tor using correct equipment and complete rig-ging instructions. For further information, seepage 39.EMU33581

Remote control requirements

WARNINGEWM01580

● If the engine starts in gear, the boat canmove suddenly and unexpectedly, pos-sibly causing a collision or throwingpassengers overboard.

● If the engine ever starts in gear, thestart-in-gear protection device is notworking correctly and you should dis-continue using the outboard. Contactyour Yamaha dealer.

The remote control unit must be equippedwith a start-in-gear protection device(s). Thisdevice prevents the engine from starting un-less it is in neutral.

EMU25694

Battery requirementsEMU25714

Specifications of BatteryUse a fully charged battery that meets the fol-lowing specifications. The engine cannot bestarted if battery voltage is too low.

NOTICEECM01061

Do not use a battery that does not meet thespecified capacity. If a battery that doesnot meet specifications is used, the elec-tric system could perform poorly or beoverloaded, causing electric system dam-age.

EMU36290

Mounting batteryMount the battery holder securely in a dry,well-ventilated, vibration-free location in theboat. WARNING! Do not put flammableitems, or loose heavy or metal objects in

Cold cranking amps (CCA/SAE):F9.9EB 245–433 AF9.9EHB 245–433 AT9.9EB 245–433 AT9.9EHB 245–433 AT9.9PB 245–433 AT9.9PHB 245–433 A

Marine cranking amps (MCA/ABYC):F9.9EB 323–520 AF9.9EHB 323–520 AT9.9EB 323–520 AT9.9EHB 323–520 AT9.9PB 323–520 AT9.9PHB 323–520 A

Min. reserve capacity (RC/SAE):F9.9EB 52 minutesF9.9EHB 52 minutesT9.9EB 52 minutesT9.9EHB 52 minutesT9.9PB 52 minutesT9.9PHB 52 minutes



18

the same compartment as the battery.Fire, explosion or sparks could result.[EWM01820]

EMU25730

Without a rectifier or Rectifier Regula-tor

NOTICEECM01090

A battery cannot be connected to modelsthat do not have a rectifier or RectifierRegulator.

If you wish to use a battery with the modelswithout a rectifier or Rectifier Regulator, installan optional Rectifier Regulator.Using a maintenance-free battery with theabove models can shorten the life of the bat-tery significantly.Install an optional Rectifier Regulator or useaccessories rated to withstand 18 volts orhigher with the above models. Consult yourYamaha dealer for details on installing an op-tional Rectifier Regulator.EMU34195

Propeller selectionNext to selecting an outboard motor, selectingthe right propeller is one of the most importantpurchasing decisions a boater can make. Thetype, size, and design of your propeller havea direct impact on acceleration, top speed,fuel economy, and even engine life. Yamahadesigns and manufactures propellers for ev-ery Yamaha outboard motor and every appli-cation.Your outboard motor came with a Yamahapropeller selected to perform well over arange of applications, but there may be useswhere a different propeller would be more ap-propriate.Your Yamaha dealer can help you select theright propeller for your boating needs. Selecta propeller that will allow the engine to reachthe middle or upper half of the operating

range at full throttle with the maximum boat-load. Generally, select a larger pitch propellerfor a smaller operating load and a smallerpitch propeller for a heavier load. If you carryloads that vary widely, select the propeller thatlets the engine run in the proper range for yourmaximum load but remember that you mayneed to reduce your throttle setting to staywithin the recommended engine speed rangewhen carrying lighter loads.To check the propeller, see page 85.

1. Propeller diameter in inches2. Propeller pitch in inches3. Type of propeller (propeller mark)

1. Propeller diameter in inches2. Propeller pitch in inches3. Type of propeller (propeller mark)

ZMU04606

-x1 2 3

ZMU04604

-x1 2 3



19

EMU25770

Start-in-gear protectionYamaha outboard motors or Yamaha-ap-proved remote control units are equipped withstart-in-gear protection device(s). This featurepermits the engine to be started only when itis in neutral. Always select neutral beforestarting the engine.EMU39692

Engine oil requirementsSelect an oil grade according to the averagetemperatures in the area where the outboardmotor will be used.

If oil grades listed under Recommended en-gine oil grade 1 are not available, select an al-ternative oil grade listed underRecommended engine oil grade 2.Recommended engine oil grade 1

Recommended engine oil grade 2

EMU36360

Fuel requirementsEMU41331

GasolineUse a good quality gasoline that meets theminimum octane requirement. If knocking orpinging occurs, use a different brand of gaso-line or premium unleaded fuel. Yamaha rec-ommends that you use alcohol-free gasoline(see Gasoline with Ethanol) whenever possi-ble.The use of a poor quality gasoline may resultin starting and running problems. If you en-counter drivability problems, which you sus-pect could be related to the fuel you are using,we recommend that you switch to a recog-nized high quality brand of gasoline, such asa gasoline that is advertised as Top Tier De-tergent Gasoline. Failure to comply with theserecommendations may also result in un-scheduled maintenance, fuel system dam-age, and internal engine damage.

NOTICEECM01981

● Do not use leaded gasoline. Leaded gas-oline can seriously damage the engine.

Recommended engine oil:YAMALUBE 4M FC-W or 4-stroke outboard motor oil

Recommended engine oil grade 1:SAE 10W-30/10W-40/5W-30 API SE/SF/SG/SH/SJ/SL

Recommended engine oil grade 2:SAE 15W-40/20W-40/20W-50 API SH/SJ/SL


ZMU06854

122˚F

50˚C

104

40

86

30

68

SAE API

SESFSGSHSJSL

20

50

10

32

0

14

-10

-4

-20

10W–30

10W–40

5W–30

Recommended fuel:Regular unleaded gasoline

Min. pump octane number (PON):86

ZMU06855

122˚F

50˚C

104

40

86

30

68

SAE API

SHSJSL

20

50

10

32

0

14

-10

-4

-20

15W–40

20W–40

20W–50



20

● Avoid getting water and contaminants inthe fuel tank. Contaminated fuel cancause poor performance or engine dam-age. Use only fresh gasoline that hasbeen stored in clean containers.

Gasoline with EthanolTwo types of gasoline are commonly avail-able in the U.S.A. and Canada for use in au-tomobiles and boats: conventional gasolinewithout Ethanol and gasoline with Ethanol,which is typically referred to as E10 gasoline.According to federal regulations, E10 gaso-line may contain up to 10% Ethanol.A high quality gasoline without Ethanol is thepreferred fuel for your Yamaha outboard mo-tor. However, if gasoline with Ethanol is theonly fuel available in your area, your Yamahaoutboard motor is calibrated to run properlyon fresh E10 gasoline that meets the mini-mum octane requirement specified for thismodel.

NOTICEECM02401

Never use a gasoline for your outboardmotor that contains more than 10% Etha-nol, such as E15 which contains 15% Eth-anol or E85 which contains 85% Ethanol,or gasoline containing any amount ofMethanol. These fuels can cause startingand running problems, as well as seriousfuel system and internal engine damage.

Gasoline containing ethanol has severalproperties that may cause boat fuel systemproblems.● Ethanol is a strong solvent (cleaning agent)

that can clean gum and varnish depositsfrom a boat’s fuel system, particularly in old-er boats, as well as tanks and pipes used ingasoline distribution. These released de-posits contaminate the fuel and can cause

problems, such as clogged fuel filters, car-buretors, or fuel injectors, which could re-sult in engine damage.

● Ethanol may dissolve resins used in theconstruction of fiberglass fuel tanks. Thedissolved resins contaminate the fuel andcan cause problems, such as clogged fuelfilters, carburetors, or fuel injectors, whichcould result in engine damage.

● Ethanol is hygroscopic (has a strong attrac-tion to water). Therefore, any water that in-advertently enters the fuel system,including moisture that is absorbed from theair, will mix with the ethanol in the gasoline.If the amount of water is excessive, the eth-anol and water mixture will separate fromthe gasoline in a layer at the bottom of thefuel tank. This ethanol and water mixture isvery corrosive to aluminum fuel tanks andfuel system components.

● The usable life span of E10 gasoline maybe shorter than the normal length of off-sea-son boat storage, causing starting and run-ning problems related to stale fuel.

For more information on using fuel containingethanol, visit: http://www.yamaha-motor.comGasoline FiltrationYamaha outboard motors are equipped withinternal fuel filters. However, excessive wateror debris entering your engine’s fuel systemcould prematurely clog the internal filters,causing starting and running problems, fuelsystem damage, and internal engine damage.Therefore, it is recommended that an external10-micron water-separating fuel filter be in-stalled on your boat and serviced frequently.Consult your authorized Yamaha dealer for a10-micron filter that meets your engine’s re-quirements.



21

EMU41341

Gasoline AdditivesGasoline blends change to meet automobileemission regulations and economic condi-tions. Additives, added by gasoline distribu-tors, necessary for proper automobile engineoperation and durability, may not be sufficientfor typical boat applications. Intake valve andcombustion chamber deposits may accumu-late in boat engines more rapidly than en-countered in automotive use. In addition,gasoline used for boating will typically agelonger between refills than gasoline used inautomobiles, resulting in stale and unusablegasoline that may cause starting and runningproblems, fuel system damage, and internalengine damage.Yamaha recommends the use of two Ya-malube gasoline additives to reduce internaldeposits and extend the storage life of gaso-line. Continuous use of Yamalube Ring FreeFuel Additive Plus reduces harmful internaldeposits. Yamalube Fuel Stabilizer & Condi-tioner Plus added to fresh gasoline will helpprotect the fuel system from varnishing whilehelping to keep the gasoline’s octane levelfrom decreasing excessively during storage.Other additives may also be available on themarket that may have varying degrees of ef-fectiveness. Consult your Yamaha dealerconcerning what may work best for the locallyavailable gasoline and environmental condi-tions.EMU41350

Anti-fouling paintA clean hull is required to maintain your boat’sperformance. Boats moored in the watershould be protected from marine growth (bar-nacles, mussels, and marine plants). If ap-proved by regulations for your area, thebottom of the hull can be coated with an anti-fouling paint to inhibit marine growth.

Anti-fouling paints specifically formulated foruse on aluminum may be applied to the out-board motor. The original Yamaha paint sur-face may be scuffed lightly before applyinganti-fouling paint, but do not remove the origi-nal paint. Removal of the original paint will in-crease the rate of corrosion.

NOTICEECM02410

Anti-fouling paint for fiberglass and woodmay contain materials, such as copper,graphite, and tin, that can cause corrosionif applied to aluminum boats and outboardmotor components. Never apply thesetypes of paint to your outboard motor be-cause rapid corrosion damage could oc-cur.

Sacrificial anodes are attached to the out-board motor to provide corrosion protectionand must never be painted.

NOTICEECM02420

Painted sacrificial anodes will not providecorrosion protection.

EMU40301

Outboard motor disposal re-quirements

Never illegally discard (dump) the outboardmotor. Yamaha recommends consulting thedealer about discarding the outboard motor.



22

EMU36352

Emergency equipmentKeep the following items onboard in casethere is trouble with the outboard motor.● A tool kit with assorted screwdrivers, pliers,

wrenches (including metric sizes), andelectrical tape.

● Waterproof flashlight with extra batteries.● An extra engine shut-off cord (lanyard) with

clip.● Spare parts, such as an extra set of spark

plugs.Consult your Yamaha dealer for details.EMU25222

Emission control information EMU25230

North American modelsThis engine conforms to U.S. EnvironmentalProtection Agency (EPA) regulations for ma-rine SI engines. See the label affixed to yourengine for details.EMU25243

Approval label of emission control certifi-cateThis label is attached to the bottom cowling.New Technology; (4-stroke/HPDI) EM

EMU39201

Manufactured date labelThis label is attached to the clamp bracket.

1. Approval label location

1. Manufactured date label location

ZMU07060

EMISSION CONTROL INFORMATION EMTHIS ENGINE CONFORMS TO CALIFORNIA AND U.S. EPA EXHAUSTREGULATIONS FOR SI MARINE ENGINES. REFER TO THE OWNER'SMANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.MEETS U.S. EPA EVAP STANDARDS USING CERTIFIED COMPONENTS.FAMILY:DISPLACEMENT: litersSPARK PLUG:FUEL: GASOLINE

FELs(HC+NOx / CO): / g/kW-hr MAX POWER: kWIDLE SPEED: ± rpm IN NEUTRALSPARK PLUG GAP (mm):VALVE LASH (mm) IN: EX:

YAMAHA MOTOR CO.,LTD.

INFORMATION ANTIPOLLUTION EMCE MOTEUR EST CONFORME AUX NORMES D’ÉMISSIONS EPA DES É.-U. ET DE LACALIFORNIE POUR MOTEURS MARINS À ÉTINCELLE. POUR LES SPÉCIFICATIONS ET LESRÉGLAGES À EFFECTUER, CONSULTEZ LE MANUEL DU PROPRIÉTAIRE. INSTALLÉ AVECLES COMPOSANTS HOMOLOGUÉS, IL SATISFAIT AUX NORMES EVAP EPA DES É.-U.

YAMAHA MOTOR CO.,LTD.

FAMILLE :CYLINDRÉE : litreBOUGIE : CARBURANT : ESSENCE

FELs(HC+NOx / CO): / g/kW-h PUISS. MAX. : kWRALENTI : ± tr/mm AU POINT MORTBOUGIE-ÉCARTEMENT (mm) :JEU DE SOUPAPES (mm) ADM: ÉCH:

Manufactured:

ZMU04346



23

EMU25274

Star labelsYour outboard motor is labeled with a Califor-nia Air Resources Board (CARB) star label.See below for a description of your particularlabel.

EMU40330

One Star—Low EmissionThe one-star label identifies engines thatmeet the Air Resources Board’s PersonalWatercraft and Outboard marine engine 2001exhaust emission standards. Engines meet-ing these standards have 75% lower emis-sions than conventional carbureted two-stroke engines. These engines are equivalentto the U.S. EPA’s 2006 standards for marineengines.

EMU40340

Two Stars—Very Low EmissionThe two-star label identifies engines that meetthe Air Resources Board’s Personal Water-craft and Outboard marine engine 2004 ex-haust emission standards. Engines meetingthese standards have 20% lower emissionsthan One Star-Low-Emission engines.

EMU40350

Three Stars—Ultra Low EmissionThe three-star label identifies engines thatmeet the Air Resources Board’s PersonalWatercraft and Outboard marine engine 2008exhaust emission standards or the Sterndriveand Inboard marine engine 2003-2008 ex-haust emission standards. Engines meetingthese standards have 65% lower emissionsthan One Star-Low-Emission engines.

EMU33861

Four Stars—Super Ultra Low EmissionThe four-star label identifies engines thatmeet the Air Resources Board’s Sterndriveand Inboard marine engine 2009 exhaust

1. Star labels location

1

ZMU07797

ZMU01702

ZMU01703

ZMU01704



24

emission standards. Personal Watercraft andOutboard marine engines may also complywith these standards. Engines meeting thesestandards have 90% lower emissions thanOne Star-Low-Emission engines.

ZMU05663


Components

25

EMU2579Y

Components diagramTIP:* May not be exactly as shown; also may not be included as standard equipment on all models(order from dealer).F9.9

1

7

8

9

2

3

4

5

6

10

ZMU07798

1. Top cowling2. Clamp bracket3. Trim rod4. Drain screw5. Cooling water inlet6. Propeller7. Cowling lock lever8. Idle hole9. Anti-cavitation plate10.Fuel tank


Components

26

T9.9

1

2 8

9

10

3

4

5

6

7

12

11

ZMU07889

1. Top cowling2. Power tilt switch*3. Clamp bracket4. Trim rod*5. Drain screw6. Cooling water inlet7. Propeller8. Cowling lock lever9. Idle hole10.Anti-cavitation plate11.Remote control box (side mount type)*12.Fuel tank


Components

27

F9.9, T9.9

EMU25803

Fuel tankIf your model was equipped with a portablefuel tank, its function is as follows.

WARNINGEWM00020

The fuel tank supplied with this engine isits dedicated fuel reservoir and must notbe used as a fuel storage container. Com-mercial users should conform to relevantlicensing or approval authority regula-tions.

1

92 12 14 13 15

10 11

152

34

5

76

12 13 14

1716 14

8ZMU07890

1. Manual starter handle*2. Choke knob*3. Flushing device4. Steering friction adjuster*5. Tilt lock lever*6. Tilt support knob*7. Restraint cable attachment8. Clamp screw9. Starter button*10.Alert indicator11.Starter button*12.Engine stop button*13.Gear shift lever*14.Throttle friction adjuster*15.Throttle grip*16.Power tilt switch*17.Engine shut-off cord (lanyard)


Components

28

EMU25830

Fuel jointThis joint is used to connect the fuel line.EMU43120

Fuel gaugeThis gauge shows the approximate amount offuel remaining in the fuel tank.EMU43150

Pressure relief tabThis is attached to the filler hole of the fueltank.EMU43130

Fuel tank capThis cap seals the fuel tank. To loosen thecap, press and hold the pressure relief taband turn the cap counterclockwise.EMU43141

Air vent screwThis screw is on the fuel tank cap. When turn-ing the air vent screw counterclockwise, it isloosened and the pressure in the fuel tank isreleased to a certain pressure. Air is allowedto enter the fuel tank while operating the en-gine.

EMU26181

Remote control boxThe remote control lever actuates both theshifter and the throttle. The electrical switchesare mounted on the remote control box.

EMU26190

Remote control leverMoving the lever forward from the neutral po-sition engages forward gear. Pulling the leverback from neutral engages reverse. The en-gine will continue to run at idle until the leveris moved about 35° (a detent can be felt).Moving the lever farther opens the throttle,and the engine will begin to accelerate.

1. Fuel joint2. Fuel gauge3. Pressure relief tab4. Fuel tank cap5. Air vent screw

ZMU07460

2 4 5

3

1

3

1. Power tilt switch2. Remote control lever3. Neutral interlock trigger4. Neutral throttle lever5. Main switch / choke switch6. Engine shut-off switch7. Throttle friction adjuster

1. Neutral “ ”2. Forward “ ”


Components

29

EMU26201

Neutral interlock triggerTo shift out of neutral, first pull the neutral in-terlock trigger up.

EMU26212

Neutral throttle leverTo open the throttle without shifting into eitherforward or reverse, put the remote control le-ver in the neutral position and lift the neutralthrottle lever.

TIP:The neutral throttle lever will operate onlywhen the remote control lever is in neutral.The remote control lever will operate onlywhen the neutral throttle lever is in the closedposition.EMU26221

Choke switchTo activate the choke system, press in themain switch while the key is turned to the “ ”(on) or “ ” (start) position. The choke sys-tem will then supply the rich fuel mixture re-quired to start the engine. When the key isreleased, the choke will switch off automati-cally.

EMU25913

Tiller handle To change direction, move the tiller handle tothe left or right as necessary.

3. Reverse “ ”4. Shift5. Fully closed6. Throttle7. Fully open

1. Neutral interlock trigger

1. Fully open2. Fully closed3. Neutral throttle lever

1

2

3

ZMU06988

ZMU07800


Components

30

EMU25924

Gear shift lever Move the gear shift lever forward to engagethe forward gear or rearward to engage thereverse gear.

EMU25942

Throttle grip The throttle grip is on the tiller handle. Turnthe grip counterclockwise to increase speedand clockwise to decrease speed.

EMU25962

Throttle indicator The fuel consumption curve on the throttle in-dicator shows the relative amount of fuel con-sumed for each throttle position. Choose thesetting that offers the best performance andfuel economy for the desired operation.

EMU25976

Throttle friction adjusterA friction device provides adjustable resis-tance to movement of the throttle grip or theremote control lever, and can be set accord-ing to operator preference.To increase resistance, turn the adjusterclockwise. To decrease resistance, turn theadjuster counterclockwise. WARNING! Donot overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to move the remote control leveror throttle grip, which could result in anaccident. [EWM00032]

1. Forward “ ”2. Neutral “ ”3. Reverse “ ”

1. Throttle indicator

ZMU05338

1

ZMU05369


Components

31

When constant speed is desired, tighten theadjuster to maintain the desired throttle set-ting.EMU25995

Engine shut-off cord (lanyard) and clipThe clip must be attached to the engine shut-off switch for the engine to run. The cordshould be attached to a secure place on theoperator’s clothing, or arm or leg. Should theoperator fall overboard or leave the helm, thecord will pull out the clip, stopping ignition tothe engine. This will prevent the boat fromrunning away under power. WARNING! At-tach the engine shut-off cord to a secureplace on your clothing, or your arm or legwhile operating. Do not attach the cord toclothing that could tear loose. Do not routethe cord where it could become entangled,preventing it from functioning. Avoid acci-dentally pulling the cord during normaloperation. Loss of engine power meansthe loss of most steering control. Also,without engine power, the boat could slowrapidly. This could cause people and ob-jects in the boat to be thrown forward.[EWM00122]

EMU26003

Engine stop button The engine stop button stops the enginewhen the button is pushed.

ZMU05342

1. Cord2. Clip3. Engine shut-off switch

1. Cord2. Clip3. Engine shut-off switch

ZMU06982

2

3

1


Components

32

EMU26013

Choke knob for pull typeTo supply the engine with the rich fuel mixturerequired to start, pull out this knob.

EMU26074

Manual starter handleThe manual starter handle is used to crankand start the engine.

EMU26081

Starter buttonTo start the engine with the electric starter,push the starter button.

EMU26091

Main switchThe main switch controls the ignition system;its operation is described below.● “ ” (off)With the main switch in the “ ” (off) posi-tion, the electrical circuits are off, and the keycan be removed.● “ ” (on)With the main switch in the “ ” (on) position,the electrical circuits are on, and the key can-not be removed.● “ ” (start)With the main switch in the “ ” (start) po-sition, the starter motor turns to start the en-gine. When the key is released, it returnsautomatically to the “ ” (on) position.

1. Choke knob

1

ZMU07807

ZMU07888


Components

33

EMU26102

Power tilt switchThe power tilt system adjusts the outboardmotor angle in relation to the transom. Push-ing the switch “ ” (up) tilts the outboard mo-tor up. Pressing the switch “ ” (down) tiltsthe outboard motor down. When the switch isreleased, the outboard motor will stop in itscurrent position.

TIP:For instructions on using the power tilt switch,see pages 61 and 63.EMU31432

Steering friction adjusterA friction device provides adjustable resis-tance to the steering mechanism, and can beset according to operator preference. An ad-juster lever is located on the bottom of thetiller handle bracket.To increase resistance, turn the lever to theport side “A”.To decrease resistance, turn the lever to thestarboard side “B”.

WARNINGEWM00040

Do not overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to steer, which could result in anaccident.


Components

34

If the resistance does not increase even whenthe lever is turned to the port side “A”, makesure that the nut is tightened to the specifiedtorque.

TIP:● Steering movement is blocked when the

adjuster lever is set to the “A” position.● Check the tiller handle for smooth move-

ment when the lever is turned to the star-board side “B”.

● Do not apply lubricants such as grease tothe friction areas of the steering friction ad-juster.

EMU26262

Trim rod (tilt pin)The position of the trim rod determines theminimum trim angle of the outboard motor inrelation to the transom.

EMU30530

Tilt lock mechanismThe tilt lock mechanism is used to prevent theoutboard motor from lifting out of the waterwhen in reverse gear.

To lock it, set the tilt lock lever in the lock po-sition. To release, push the tilt lock lever in therelease position.EMU26321

Tilt support knobTo keep the outboard motor in the tilted up po-sition, push the tilt support knob under theswivel bracket.

1. Nut

Nut tightening torque:8 Nm (0.82 kgf-m, 5.9 ft-lb)

1. Trim rod

1. Tilt lock lever

1 ZMU07813

1

ZMU07814


Components

35

NOTICEECM00660

Do not use the tilt support lever or knobwhen trailering the boat. The outboard mo-tor could shake loose from the tilt supportand fall. If the motor cannot be trailered inthe normal running position, use an addi-tional support device to secure it in the tiltposition.

EMU26333

Tilt support barThe tilt support bar keeps the outboard motorin the tilted up position.

NOTICEECM01660

Do not use the tilt support bar when traile-ring the boat. The outboard motor couldshake loose from the tilt support and fall.If the motor cannot be trailered in the nor-

mal running position, use an additionalsupport device to secure it in the tilt posi-tion.

EMU26361

Power tilt unitThis unit tilts the outboard motor up and downand is controlled with the power tilt switch.

NOTICEECM00630

Do not step on or exert pressure on thepower tilt motor. The power tilt unit couldbe damaged as a result.

NOTICEECM00660

Do not use the tilt support lever or knobwhen trailering the boat. The outboard mo-tor could shake loose from the tilt supportand fall. If the motor cannot be trailered inthe normal running position, use an addi-tional support device to secure it in the tiltposition.

EMU39263

Cowling lock leverThe cowling lock lever(s) is used to secure thetop cowling.

1. Power tilt unit2. Power tilt motor


Components

36

EMU26463

Flushing deviceThis device is used to clean the cooling waterpassages of the motor using a garden hoseand tap water.

TIP:For details on usage, see page 75.EMU26304

Alert indicator If the engine develops a condition which iscause for alert, the indicator lights up. For de-tails on how to read the alert indicator, seepage 38.

1. Cowling lock lever

1. Flushing device

1

ZMU07818 1. Low oil pressure-alert indicator

1

ZMU07820


Instruments and indicators

37

EMU36015

Indicators EMU36024

Low oil pressure-alert indicatorIf oil pressure drops too low, this indicator willlight up. For further information, see page 38.

NOTICEECM00022

● Do not continue to run the engine if thelow oil pressure-alert indicator is on andthe engine oil level is lower. Serious en-gine damage will occur.

● The low oil pressure-alert indicator doesnot indicate the engine oil level. Use theoil dipstick to check the remaining oilquantity. For further information, seepage 44.

1. Low oil pressure-alert indicator

1

ZMU07820


Engine control system

38

EMU26803

Alert system

NOTICEECM00091

Do not continue to operate the engine if aalert device has activated. Consult yourYamaha dealer if the problem cannot be lo-cated and corrected.

EMU3016B

Low oil pressure alertIf the oil pressure drops too low, the alert de-vice will activate.● The engine speed will automatically de-

crease to about 2000 r/min. If equipped witha low oil pressure-alert indicator, it will lightor blink.

● The buzzer will sound (if equipped on thetiller handle, remote control box, or mainswitch panel).

If the alert system has activated, stop the en-gine as soon as it is safe to do so. Check theoil level and add oil as needed. If the oil levelis correct and the alert device does not switchoff, consult your Yamaha dealer.

ZMU07904

ZMU02360


Installation

39

EMU26902

InstallationThe information presented in this section is in-tended as reference only. It is not possible toprovide complete instructions for every possi-ble boat and motor combination. Propermounting depends in part on experience andthe specific boat and motor combination.

WARNINGEWM01590

● Overpowering a boat could cause se-vere instability. Do not install an out-board motor with more horsepower thanthe maximum rating on the capacityplate of the boat. If the boat does nothave a capacity plate, consult the boatmanufacturer.

● Improper mounting of the outboard mo-tor could result in hazardous conditionssuch as poor handling, loss of control,or fire hazards. For permanently mount-ed models, your dealer or other personexperienced in proper rigging shouldmount the motor.

EMU34801

Mounting the outboard motor

NOTICEECM01680

Do not hold the top cowling when mount-ing or dismounting the outboard motor.The top cowling could come off, causingthe outboard motor to fall.

1. Be sure to mount the outboard motorwhile the boat is on land. If the boat is onthe water, move it to an area on land.

2. To prevent steering movement, turn theadjuster lever to “A” (if equipped with theadjuster lever). To hold the steeringbracket easily, raise the tiller handle tothe vertical position (if equipped with thetiller handle).

3. Hold the handgrip and steering bracketas shown in the illustration and lift up theoutboard motor using two people.

1. Steering bracket2. Handgrip

1

2ZMU07878


Installation

40

4. Mount the outboard motor on the centerline (keel line) of the boat, and ensurethat the boat itself is well balanced. Oth-erwise the boat will be hard to steer. Forboats without a keel or which are asym-metrical, consult your dealer.

EMU26925

Mounting heightTo run your boat at optimum efficiency, thewater resistance (drag) of the boat and out-board motor must be made as little as possi-ble. The mounting height of the outboardmotor greatly affects the water resistance. Ifthe mounting height is too high, cavitationtends to occur, thus reducing the propulsion;and if the propeller tips cut the air, the engine

speed will rise abnormally and cause the en-gine to overheat. If the mounting height is toolow, the water resistance will increase andthereby reduce engine efficiency. Mount theoutboard motor so that the anti-cavitationplate is between the bottom of the boat and alevel 25 mm (1 in) below it.

NOTICEECM01634

● Make sure that the idle hole is highenough to prevent water from enteringthe engine even if the boat is stationarywith the maximum load.

● Incorrect engine height or obstructionsto the smooth flow of water (such as thedesign or condition of the boat, or ac-cessories, such as transom ladders ordepth finder transducers) can create air-borne water spray while the boat iscruising. If the outboard motor is operat-ed continuously in the presence of air-borne water spray, enough water couldenter the engine through the air intakeopening in the top cowling to cause se-vere engine damage. Remove the causeof the airborne water spray.

TIP:● The optimum mounting height of the out-

board motor is affected by the boat and mo-tor combination and the desired use. Test

1. Center line (keel line)

ZMU017601


Installation

41

runs at different heights can help determinethe optimum mounting height. Consult yourYamaha dealer or boat manufacturer forfurther information on determining the prop-er mounting height.

● For instructions on setting the trim angle ofthe outboard motor, see page 61.

EMU26973

Clamping the outboard motor1. Place the outboard motor on the transom

so that it is positioned as close to the cen-ter as possible. Tighten the transomclamp screws evenly and securely. Oc-casionally check the clamp screws fortightness during operation of the out-board motor because they could becomeloose due to engine vibration.WARNING! Loose clamp screws couldallow the outboard motor to fall off ormove on the transom. This couldcause loss of control and serious inju-ry. Make sure the clamp screws aretightened securely. Occasionallycheck the screws for tightness duringoperation. [EWM00642]

2. If the restraint cable attachment isequipped on your engine, a restraint ca-ble or chain should be used. Attach oneend to the restraint cable attachment andthe other to a secure mounting point on

the boat. Otherwise the engine could becompletely lost if it accidentally falls offthe transom.

3. Secure the clamp bracket to the transomusing the bolts provided with the out-board (if packed). For details, consultyour Yamaha dealer. WARNING! Avoidusing bolts, nuts or washers otherthan those contained in the enginepackaging. If used, they must be of atleast the same quality of material andstrength and must be tightened se-curely. After tightening, test run theengine and check their tightness.[EWM00651]

ZMU02012

1. Bolts

ZMU02013

1

ZMU03806


Operation

42

EMU36381

First-time operationEMU36391

Fill engine oilThe engine is shipped from the factory withoutengine oil. If your dealer did not fill the oil, youmust fill it before starting the engine. NOTICE:Check that the engine is filled with oil be-fore first-time operation to avoid severeengine damage. [ECM01781]

The engine is shipped with the following stick-er, which should be removed after engine oilis filled for the first time. For more informationon checking the engine oil level, see page 44.

EMU30174

Breaking in engineYour new engine requires a period of break-into allow mating surfaces of moving parts towear in evenly. Correct break-in will help en-sure proper performance and longer enginelife. NOTICE: Failure to follow the break-inprocedure could result in reduced enginelife or even severe engine damage. [ECM00801]

EMU27085

Procedure for 4-stroke modelsYour new engine requires a period of 10hours break-in to allow mating surfaces ofmoving parts to wear in evenly.

TIP:Run the engine in the water, under load (ingear with a propeller installed) as follows. For10 hours for breaking in engine avoid extend-ed idling, rough water and crowded areas.

1. For the first hour of operation:Run the engine at varying speeds up to2000 r/min or approximately half throttle.

2. For the second hour of operation:Increase engine speed as much as nec-essary to put the boat on plane (but avoidfull-throttle operation), then back off onthe throttle while keeping the boat at aplaning speed.

3. Remaining 8 hours:Run the engine at any speed. However,avoid operating at full throttle for morethan 5 minutes at a time.

4. After the first 10 hours:Operate the engine normally.

EMU36400

Getting to know your boatDifferent boats handle differently. Operatecautiously while you learn how your boat han-dles under different conditions and with differ-ent trim angles (see page 61).EMU36413

Checks before starting engine

WARNINGEWM01921

If any item in “Checks before starting en-gine” is not working properly, have it in-spected and repaired before operating theoutboard motor. Otherwise, an accidentcould occur.

NOTICEECM00120

Do not start the engine out of water. Over-heating and serious engine damage canoccur.

EMU36560

Fuel levelBe sure you have plenty of fuel for your trip. Agood rule is to use 1/3 of your fuel to get to thedestination, 1/3 to return, and to keep 1/3 as

ZMU01710


Operation

43

an emergency reserve. With the boat level ona trailer or in the water, check the fuel level.For fuel filling instructions, see page 46.EMU39840

Removing top cowlingFor the following checks, remove the topcowling from the bottom cowling.To remove the top cowling, pull the cowlinglock lever up and lift up the top cowling.

EMU36442

Fuel system

WARNINGEWM00060

Gasoline and its vapors are highly flam-mable and explosive. Keep away fromsparks, cigarettes, flames, or other sourc-es of ignition.

WARNINGEWM00910

Leaking fuel can result in fire or explosion.● Check for fuel leakage regularly.● If any fuel leakage is found, the fuel sys-

tem must be repaired by a qualified me-chanic. Improper repairs can make theoutboard unsafe to operate.

EMU36451

Check for fuel leaks● Check for fuel leaks or gasoline fumes in

the boat.● Check for fuel leakage from the fuel system.

● Check the fuel tank and fuel lines forcracks, swellings, or other damages.

EMU36902

ControlsTiller handle models:● Move the tiller handle fully to the left and

right to make sure operation is smooth.● Turn the throttle grip from the fully closed to

the fully open position. Make sure that itturns smoothly and that it completely re-turns to the fully closed position.

● Look for loose or damaged connections ofthe throttle and shift cables.

Remote control models:● Turn the steering wheel full-right and full-

left. Make sure operation is smooth and un-restricted throughout the whole range withno binding or excessive free play.

● Operate the throttle levers several times tomake sure there is no hesitation in theirtravel. Operation should be smooth overthe complete range of motion, and each le-ver should return completely to the idle po-sition.

● Look for loose or damaged connections ofthe throttle and shift cables.

EMU36483

Engine shut-off cord (lanyard)Inspect the engine shut-off cord and clip fordamage, such as cuts, breaks, and wear.


1

ZMU07824

1. Clip2. Cord

ZMU06873

1

2


Operation

44

EMU27167

Engine oil1. Put the outboard motor in an upright po-

sition (not tilted). NOTICE: If the motoris not level, the oil level indicated onthe dipstick may not be accurate.[ECM01790]

2. Remove oil dipstick and wipe it clean.

3. Insert the dipstick and remove it again.Be sure to completely insert the dipstickinto the dipstick guide, otherwise the oillevel measurement will be incorrect.

4. Check the oil level using the dipstick to besure the level falls between the upper andlower marks. Fill with oil if it is below thelower mark, or drain to the specified levelif it is above the upper mark.

EMU40411

Outboard motor● Check that the outboard motor is mounted

properly and check the outboard motormounting bolts for looseness.

● Check the propeller for damage.● Check for engine oil leaks.EMU36493

Flushing deviceCheck that the flushing device’s garden hoseconnector is securely screwed on to the fittingon the bottom cowling. NOTICE: If the gar-den hose connector is not properly con-nected, cooling water can leak out and theengine can overheat during operation.[ECM01801]

EMU36955

Install top cowling1. Be sure that the cowling lock lever is re-

leased.2. Be sure that the rubber seal is seated all

the way around the top cowling.

1. Oil dipstick

1. Oil dipstick2. Upper mark3. Lower mark

1

ZMU07825

3 2 1

ZMU07792

1. Fitting2. Flushing device


Operation

45

3. Place the top cowling on the bottom cowl-ing.

4. Check to be sure the rubber seal is seat-ed correctly between the top cowling andthe bottom cowling.

5. Move the cowling lock lever to lock thetop cowling as shown. NOTICE: If thetop cowling is not installed correctly,water spray under the top cowling candamage the engine, or the top cowlingcan blow off at high speeds. [ECM01991]

After installing, check the fitting of the topcowling by pushing it with both hands. If thetop cowling is loose, have it repaired by yourYamaha dealer.

EMU34782

Checking power tilt system

WARNINGEWM01970

● Never get under the lower unit while it istilted, even when the tilt support knob islocked. Severe injury could occur if theoutboard motor accidentally falls.

● Body parts can be crushed between themotor and the clamp bracket when themotor is trimmed or tilted.

● Be sure no one is near the outboard mo-tor before performing this check.

1. Check the power tilt unit for any sign of oilleaks.

2. Operate each of the power tilt switches tocheck that all switches work.

3. Tilt the outboard motor up and check thatthe tilt rod is pushed out completely.

1. Top cowling2. Rubber seal


1

2

ZMU07827

1

ZMU07828

1. Tilt rod

ZMU07829


Operation

46

4. Check that the tilt rod is free of corrosionor other flaws.

5. Tilt the outboard motor down. Check thatthe tilt rod operates smoothly.

EMU36582

BatteryCheck that the battery is in good condition,and fully charged. Check that the battery con-nections are clean, secure and covered by in-sulating covers. The electrical contacts of thebattery and cables must be clean and proper-ly connected or the battery will not start theengine.Refer to the battery manufacturer’s instruc-tions for checks for your particular battery.EMU43163

Filling fuel

WARNINGEWM01830

● Gasoline and its vapors are highly flam-mable and explosive. Always refuel ac-cording to this procedure to reduce therisk of fire and explosion.

● Gasoline is poisonous and can cause in-jury or death. Handle gasoline with care.Never siphon gasoline by mouth. If youshould swallow some gasoline or inhalea lot of gasoline vapor, or get some gas-oline in your eyes, see your doctor im-mediately. If gasoline spills on yourskin, wash with soap and water. If gaso-line spills on your clothing, change yourclothes.

Before refueling, check the following points:● Ensure the engine is stopped.● Securely moor the boat in a well-ventilated

area and stop the engine. If the boat is trail-ered, ensure it is stable.

● Do not smoke and keep away from sparks,flames, static electric discharges, or othersources of ignition.

● If you use a portable container to store anddispense fuel, use only a locally approvedGASOLINE container.

● To prevent electrostatic sparks, dischargeany built-up static electricity from your bodybefore refueling.

1. Disconnect the fuel hose from the fueljoint on the fuel tank.

2. Turn the air vent screw clockwise to closeit.

3. Remove the fuel tank from the boat.4. To loosen the air vent screw, turn it coun-

terclockwise until it stops.

1. Fuel joint2. Fuel hose

1. Air vent screw

ZMU07443

2 1

1

ZMU07444


Operation

47

5. While pressing and holding the pressurerelief tab under the fuel tank cap, slowlyturn the fuel tank cap counterclockwise1/4 turn.

TIP:Release the fuel vapor contained in the fueltank.6. While pressing and holding the pressure

relief tab under the fuel tank cap again,turn the fuel tank cap counterclockwise toremove it.

7. Fill the fuel tank with fuel. WARNING! Donot overfill. Otherwise fuel can expandand overflow if the temperature in-creases. [EWM02610]

TIP:● Wipe up any spilled gasoline immediately

with dry rags.● Dispose of rags properly according to local

laws or regulations.8. Turn the fuel tank cap clockwise to tight-

en until a click is heard.

1. Air vent screw

1. Pressure relief tab2. Fuel tank cap

1

ZMU07445

1

2

ZMU07446

1. Pressure relief tab2. Fuel tank cap

Fuel tank capacity:12 L (3.17 US gal, 2.64 Imp.gal)

1

2

ZMU07447

ZMU07461


Operation

48

9. Turn the air vent screw clockwise to closeit.

EMU27452

Operating engine

WARNINGEWM00420

● Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstructions.Be sure there are no swimmers in thewater near you.

● When the air vent screw is loosened,gasoline vapor will be released. Gaso-line is highly flammable, and its vaporsare flammable and explosive. Refrainfrom smoking, and keep away fromopen flames and sparks while looseningthe air vent screw.

● This product emits exhaust gases whichcontain carbon monoxide, a colorless,odorless gas which could cause braindamage or death when inhaled. Symp-toms include nausea, dizziness, anddrowsiness. Keep cockpit and cabin ar-eas well ventilated. Avoid blocking ex-haust outlets.

EMU44560

Sending fuel (portable tank)1. To loosen the air vent screw, turn it coun-

terclockwise until it stops.

2. Check the direction of the fuel hose.Make sure that the arrow of the primerpump points toward the outboard motor.

1. Fuel tank cap

1. Air vent screw

1

ZMU07449

1

ZMU07444 1. Air vent screw

1. Toward the outboard motor2. Arrow3. Primer pump4. Toward the fuel tank

1

ZMU07445

ZMU07452

1 43

2


Operation

49

3. Align the fuel joint on the fuel hose withthe fuel joint on the outboard motor andfirmly connect the fuel hose to the jointwhile pinching the joint.

4. Firmly connect the other end of the fuelhose to the joint on the fuel tank.

5. Wipe up any spilled gasoline immediatelywith dry rags.

TIP:Dispose of rags properly according to locallaws or regulations.6. Squeeze the primer pump, with the arrow

pointing up, until you feel it become firm.During engine operation, place the tankhorizontally, otherwise fuel cannot bedrawn from the fuel tank.

EMU27494

Starting engine

WARNINGEWM01600

Before starting the engine, make sure thatthe boat is tightly moored and that you cansteer clear of any obstructions. Be surethere are no swimmers in the water nearyou.

EMU34813

Manual start models (tiller control)

WARNINGEWM01840

● Failure to attached engine shut-off cordcould result in a runaway boat if opera-tor is ejected. Attach the engine shut-offcord to a secure place on your clothing,or your arm or leg while operating. Donot attach the cord to clothing that couldtear loose. Do not route the cord whereit could become entangled, preventing itfrom functioning.

● Avoid accidentally pulling the cord dur-ing normal operation. Loss of enginepower means the loss of most steeringcontrol. Also, without engine power, theboat could slow rapidly. This couldcause people and objects in the boat tobe thrown forward.


ZMU07905

ZMU07455

2 1

1. Arrow2. Primer pump


Operation

50

Starting procedure (cold engine)1. Place the gear shift lever in neutral.

TIP:The start-in-gear protection device preventsthe engine from starting except when in neu-tral.2. Attach the engine shut-off cord to a se-

cure place on your clothing, or your armor leg. Then install the clip on the otherend of the cord into the engine shut-offswitch.

3. Place the throttle grip in the “ ”(start) position.

4. Pull out the choke knob fully.

5. Pull the manual starter handle slowly untilyou feel resistance. Then give a strongpull straight out to crank and start the en-gine.

6. After the engine starts, slowly return themanual starter handle to its original posi-tion before releasing it.

7. Slowly return the throttle grip to the fullyclosed position.

STARTZMU07886


Operation

51

8. Return the choke knob to the home posi-tion gradually.

TIP:● If the choke knob is left in the “ ” (start)

position while the engine is running, the en-gine will run poorly or stall.

● When the engine is cold, for example, whenthe ambient temperature is low in winter, itneeds to be warmed up. For further infor-mation, see page 57.

● Do not turn the throttle grip unnecessarily toopen and close the throttle before startingthe engine, otherwise the engine may bedifficult to start. If the engine is difficult tostart, place the throttle grip in the“ ” (warm engine) position andtry again.

Starting procedure (warm engine)1. Place the gear shift lever in neutral.

2. Attach the engine shut-off cord to a se-cure place on your clothing, or your armor leg. Then install the clip on the otherend of the cord into the engine shut-offswitch.


4. Pull the manual starter handle slowly untilyou feel resistance. Then give a strongpull straight out to crank and start the en-gine.

ZMU02030


Operation

52

TIP:● If the engine does not start, place the throt-

tle grip in the “ ” (warm engine)position and try again.

● It is not necessary to use the choke whenstarting a warm engine.

5. After the engine starts, slowly return themanual starter handle to its original posi-tion before releasing it.


EMU34924

Electric start models (tiller control)

WARNINGEWM01840



Starting procedure (cold engine)1. Place the gear shift lever in neutral.


cure place on your clothing, or your armor leg. Then install the clip on the otherend of the cord into the engine shut-offswitch.ZMU02030


Operation

53


4. Pull out the choke knob fully.

5. Push the starter button to start the en-gine.

6. Immediately after the engine starts, re-lease the starter button to allow it to re-turn to its original position. NOTICE:Never push the starter button whilethe engine is running. Do not keep thestarter motor turning for more than 5seconds. If the starter motor is turnedcontinuously for more than 5 sec-onds, the battery will be quickly dis-charged, thus making it impossible tostart the engine. The starter can alsobe damaged. If the engine will not startafter 5 seconds of cranking, releasethe starter button, wait 10 seconds,then crank the engine again. [ECM00161]


STARTZMU07886

ZMU07888


Operation

54

8. Return the choke knob to the home posi-tion gradually.

TIP:● If the choke knob is left in the “ ” (start)

position while the engine is running, the en-gine will run poorly or stall.

● When the engine is cold, for example, whenthe ambient temperature is low in winter, itneeds to be warmed up. For further infor-mation, see page 57.

Starting procedure (warm engine)1. Place the gear shift lever in neutral.

2. Attach the engine shut-off cord to a se-cure place on your clothing, or your armor leg. Then install the clip on the otherend of the cord into the engine shut-offswitch.


4. Push the starter button to start the en-gine.

ZMU02030


Operation

55

TIP:● If the engine does not start, place the throt-

tle grip in the “ ” (warm engine)position and try again.

● It is not necessary to use the choke whenstarting a warm engine.

5. Immediately after the engine starts, re-lease the starter button to allow it to re-turn to its original position.


EMU34932

Electric start models (remote control)

WARNINGEWM01840



1. Place the remote control lever in neutral.


cure place on your clothing, or your armor leg. Then install the clip on the otherend of the cord into the engine shut-offswitch.

ZMU07888

ZMU02030


Operation

56

3. Turn the main switch to “ ” (on).

4. Open the throttle slightly without shiftingusing the neutral throttle lever.

TIP:The neutral throttle lever can only be usedwhen the remote control lever is in neutral.5. Press in and hold the main switch to op-

erate the remote choke system. (The re-mote choke system operates only whenthe main switch is pressed in fully.)

TIP:It is not necessary to use the choke whenstarting a warm engine.6. Turn the main switch to “ ” (start) to

start the engine.

7. Immediately after the engine starts, re-lease the main switch and allow it to re-turn to “ ” (on). The remote chokesystem stops operating when the mainswitch is released. NOTICE: Never turnthe main switch to “ ” (start)while the engine is running. Do notkeep the starter motor turning formore than 5 seconds. If the starter mo-tor is turned continuously for morethan 5 seconds, the battery will bequickly discharged, thus making it im-possible to start the engine. The start-er can also be damaged. If the enginewill not start after 5 seconds of crank-

OFF

ON

ZMU01880


Operation

57

ing, return the main switch to “ ”(on), wait 10 seconds, then crank theengine again. [ECM00192]

8. Return the neutral throttle lever to theoriginal position.

TIP:When the engine is cold, for example, whenthe ambient temperature is low in winter, itneeds to be warmed up. For further informa-tion, see page 57.EMU36510

Checks after starting engineEMU36523

Cooling waterCheck for a steady flow of water from the cool-ing water pilot hole. A continuous flow of waterfrom the pilot hole indicates that the waterpump is pumping water through the coolingwater passages. If the cooling water passag-es are frozen, it may take a while for water tostart flowing out of the pilot hole.

NOTICEECM01810

If water is not flowing out of the pilot holeat all times while the engine is running,overheating and serious damage couldoccur. Stop the engine and check whetherthe cooling water inlet on the lower case orthe cooling water pilot hole is blocked.Consult your Yamaha dealer if the prob-lem cannot be located and corrected.

EMU27670

Warming up engineEMU27716

Manual start and electric start models1. After starting the engine, allow it to idle for

3 minutes to warm up. Failure to do so willshorten engine life.

2. Be sure the low oil pressure-alert indica-tor goes off after starting the engine.NOTICE: If the low oil pressure-alertindicator blinks after the engine starts,stop the engine. Otherwise, seriousengine damage could occur. Checkthe oil level and add engine oil if nec-essary. Consult your Yamaha dealer ifthe cause for the low oil pressure alertcannot be found. [ECM01831]

EMU36531

Checks after engine warm upEMU36541

ShiftingWhile the boat is tightly moored, and withoutapplying throttle, confirm that the engine shiftssmoothly into forward and reverse, and backto neutral.EMU36980

Stop switches● Turn the main switch to “ ”, or press the

engine stop button and make sure the en-gine stops.

● Confirm that removing the clip from the en-gine shut-off switch stops the engine.

1. Cooling water pilot hole

1

ZMU07830


Operation

58

● Confirm that the engine cannot be startedwith the clip removed from the engine shut-off switch.

EMU34562

Shifting

WARNINGEWM00180

Before shifting, make sure there are noswimmers or obstacles in the water nearyou.

NOTICEECM01610

Warm up the engine before shifting intogear. Until the engine is warm, the idlespeed may be higher than normal. Highidle speed can prevent you from shiftingback to neutral. If this occurs, stop the en-gine, shift to neutral, then restart the en-gine and allow it to warm up.

To shift out of neutral1. Pull the neutral interlock trigger up (if

equipped).

2. Move the remote control lever / gear shiftlever firmly and crisply forward (for for-ward gear) or backward (for reversegear) [about 35° (a detent can felt) for re-mote control models]. Be sure to checkthat the tilt lock lever is in the lock/downposition (if equipped) before operating inreverse.

TIP:Tiller handle models: The gear shift lever op-erates only when the throttle grip is in the fullyclosed position.To shift from in gear (forward/reverse) to neu-tral1. Close the throttle so that the engine

slows to idle speed.

1. Neutral interlock trigger

ZMU07892


Operation

59

2. After the engine is at idle speed in gearmove the remote control lever / gear shiftlever firmly and crisply into the neutral po-sition.

EMU31742

Stopping boat

WARNINGEWM01510

● Do not use the reverse function to slowdown or stop the boat as it could causeyou to lose control, be ejected, or impactthe steering wheel or other parts of theboat. This could increase the risk of se-rious injury. It could also damage theshift mechanism.

● Do not shift into reverse while travelingat planing speeds. Loss of control, boatswamping, or damage to the boat couldoccur.

The boat is not equipped with a separatebraking system. Water resistance stops it af-ter the throttle lever is moved back to idle. Thestopping distance varies depending on grossweight, water surface conditions, and wind di-rection.EMU27821

Stopping engineBefore stopping the engine, first let it cool offfor a few minutes at idle or low speed. Stop-ping the engine immediately after operating athigh speed is not recommended.EMU43431

Procedure1. Push and hold the engine stop button un-

til the engine comes to a complete stop.

ZMU02030


Operation

60

2. Disconnect the fuel hose from the fueljoint on the outboard motor.


4. Tighten the air vent screw by turning itclockwise.

TIP:If the outboard motor is equipped with an en-gine shut-off cord, the engine can also bestopped by pulling the cord and removing theclip from the engine shut-off switch.EMU43441

Procedure1. Turn the main switch to “ ” (off).



ZMU07906

ZMU07443

2 1

1. Air vent screw

1

ZMU07444

ZMU07906


Operation

61


4. Tighten the air vent screw by turning itclockwise.

5. When using the fuel tank on a boat, closethe fuel valve.

TIP:Check the boat’s manual for the position ofthe fuel valve.6. Remove the key if the boat will be left un-

attended.

TIP:The engine can also be stopped by pulling thecord and removing the clip from the engineshut-off switch, then turning the main switchto “ ” (off).

EMU27862

Trimming outboard motor

WARNINGEWM00740

Excessive trim for the operating condi-tions (either trim up or trim down) cancause boat instability and can make steer-ing the boat more difficult. This increasesthe possibility of an accident. If the boatbegins to feel unstable or is hard to steer,slow down and/or readjust the trim angle.

The trim angle of the outboard motor helpsdetermine the position of the bow of the boatin the water. Correct trim angle will help im-prove performance and fuel economy whilereducing strain on the engine. Correct trim an-gle depends upon the combination of boat,engine, and propeller. Correct trim is also af-fected by variables such as the load in theboat, sea conditions, and running speed.

EMU27872

Adjusting trim angle for manual tilt modelsThere are 4 or 5 holes provided in the clampbracket to adjust the outboard motor trim an-gle.1. Stop the engine.2. Tilt the outboard motor up, and then re-

move the trim rod from the clamp bracket.


1. Air vent screw

ZMU07443

2 1

1

ZMU07444

1. Trim operating angle


Operation

62

3. Reposition the rod in the desired hole.To raise the bow (“trim-out”), move the rodaway from the transom.To lower the bow (“trim-in”), move the rod to-ward the transom.Make test runs with the trim set to different an-gles to find the position that works best foryour boat and operating conditions.

WARNINGEWM00400

● Stop the engine before adjusting thetrim angle.

● Use care to avoid being pinched whenremoving or installing the rod.

● Use caution when trying a trim positionfor the first time. Increase speed gradu-ally and watch for any signs of instabilityor control problems. Improper trim an-gle can cause loss of control.

TIP:The outboard motor trim angle can bechanged approximately 4 degrees by shiftingthe trim rod one hole.

EMU27905

Adjusting trim angle (power tilt mod-els)

WARNINGEWM00753

● Be sure all people are clear of the out-board motor when adjusting the trim an-gle. Body parts can be crushed betweenthe motor and the clamp bracket whenthe motor is trimmed or tilted.

● Use caution when trying a trim positionfor the first time. Increase speed gradu-ally and watch for any signs of instabilityor control problems. Improper trim an-gle can cause loss of control.

● If equipped with a power trim and tiltswitch located on the bottom cowling,use the switch only when the boat is at acomplete stop with the engine off. Donot adjust the trim angle with this switchwhile the boat is moving.

1. Move the gear shift lever to the neutralposition.

TIP:While the boat is moving, it may be difficult toadjust the trim angle due to water pressure.Before adjusting the trim angle, reduce theboat speed and shift into neutral.2. Tilt the outboard motor to the desired an-

gle using the power tilt switch.

1. Trim rod1 ZMU07831


Operation

63

To raise the bow (“trim-out”), tilt the outboardmotor up.To lower the bow (“trim-in”), tilt the outboardmotor down.Make test runs with the trim set to different an-gles to find the position that works best foryour boat and operating conditions.

TIP:Stay within the trim operating angle whentrimming the outboard motor using the powertilt system.EMU27912

Adjusting boat trimWhen the boat is on plane, a bow-up attituderesults in less drag, greater stability and effi-ciency. This is generally when the keel line ofthe boat is up about 3 to 5 degrees. With thebow up, the boat may have a greater tenden-cy to steer to one side or the other. Compen-sate for this as you steer. When the bow of theboat is down, it is easier to accelerate from astanding start onto plane.

Bow UpToo much trim-out puts the bow of the boattoo high in the water. Performance and econ-omy are decreased because the hull of theboat is pushing the water and there is more airdrag. Excessive trim-out can also cause thepropeller to ventilate, which reduces perfor-mance further, and the boat may “porpoise”(hop in the water), which could throw the op-erator and passengers overboard.

Bow DownToo much trim-in causes the boat to “plow”through the water, decreasing fuel economyand making it hard to increase speed. Operat-ing with excessive trim-in at higher speedsalso makes the boat unstable. Resistance atthe bow is greatly increased, heightening thedanger of “bow steering” and making opera-tion difficult and dangerous.

TIP:Depending on the type of boat, the outboardmotor trim angle may have little effect on thetrim of the boat when operating.EMU27935

Tilting up and downIf the engine will be stopped for some time orif the boat is moored in shallows, the outboardmotor should be tilted up to protect the propel-ler and lower casing from damage by collisionwith obstructions, and also to reduce salt cor-rosion.


Operation

64

WARNINGEWM00222

Make sure that no one is near the outboardmotor when tilting the outboard motor upor down. Otherwise, body parts could becrushed between the outboard motor andthe clamp bracket.

WARNINGEWM00250

Leaking fuel is a fire hazard. If there is afuel joint on the outboard motor, discon-nect the fuel line or close the fuel cock ifthe engine will be tilted for more than a fewminutes. Otherwise fuel may leak.

NOTICEECM00241

● Before tilting the outboard motor, stopthe engine by following the procedureon page 59. Never tilt the outboard mo-tor while the engine is running. Severedamage from overheating can result.

● Do not tilt up the engine by pushing thetiller handle (if equipped) because thiscould break the handle.

EMU43221

Procedure for tilting up (manual tilt models)1. Place the remote control lever / gear shift

lever in neutral.


3. Place the tilt lock lever (if equipped) in therelease/up position.

4. Pull up the shallow water lever (ifequipped).

5. Hold the rear of the top cowling with onehand and tilt the engine up fully.

6. Push the tilt support knob into the clampbracket. Or the tilt support bar will turn tothe lock position automatically. NOTICE:

ZMU07906


Operation

65

Do not use the tilt support lever orknob when trailering the boat. The out-board motor could shake loose fromthe tilt support and fall. If the motorcannot be trailered in the normal run-ning position, use an additional sup-port device to secure it in the tiltposition. For more detailed informa-tion, see page 71. [ECM01641]

EMU32724

Procedure for tilting up (power tilt models)1. Place the remote control lever / gear shift

lever in neutral.

2. Press the power tilt switch “ ” (up) untilthe outboard motor has tilted up com-pletely.

N

ZMU03196


Operation

66

3. Push the tilt support knob into the clampbracket to support the engine.WARNING! After tilting the outboardmotor, be sure to support it with the tiltsupport knob or tilt support lever. Oth-erwise the outboard motor could fallback down suddenly if oil in the powertrim and tilt unit or in the power tilt unitloses pressure. [EWM00262] NOTICE: Donot use the tilt support lever or knobwhen trailering the boat. The outboardmotor could shake loose from the tiltsupport and fall. If the motor cannotbe trailered in the normal running po-sition, use an additional support de-vice to secure it in the tilt position. Formore detailed information, see page71. [ECM01641]

4. Models equipped with trim rods: Once theoutboard motor is supported with the tiltsupport lever, press the power tilt switch

“ ” (down) to retract the trim rods.NOTICE: Make sure that the trim rodsretracts completely during mooring.This protects the rods from marinegrowth and corrosion, which coulddamage the power trim and tilt mecha-nism. [ECM00252]

EMU30192

Procedure for tilting down (manual tilt models)1. Place the tilt lock lever in the lock posi-

tion.

2. Slightly tilt the engine up until the tilt sup-port bar is automatically released.

3. Slowly tilt the engine down.EMU33121

Procedure for tilting down (power tilt models)1. Push the power tilt switch “ ” (up) until

the outboard motor is supported by the tiltrod and the tilt support knob becomesfree.

2. Pull out the tilt support knob.

ZMU07892


Operation

67

3. Push the power tilt switch “ ” (down) tolower the outboard motor to the desiredposition.

EMU28062

Shallow water EMU28073

Cruising in shallow water (manual tilt models)

WARNINGEWM01781

● Run the boat at the lowest possiblespeed when using the shallow watercruising system. The tilt lock mecha-nism does not work while the shallowwater cruising system is being used. Hit-ting an underwater obstacle couldcause the outboard motor to lift out ofthe water, resulting in loss of control.

● Use extra care when operating in re-verse. Too much reverse thrust cancause the outboard motor to lift out ofthe water, increasing the chance of acci-dent and personal injury.

NOTICEECM00260

Do not tilt the outboard motor up so thatthe cooling water inlet on the lower unit isabove the surface of the water when set-ting up for and cruising in shallow water.Otherwise severe damage from overheat-ing can result.

DN

ZMU01936

UP

DN


Operation

68

EMU28125

Procedure1. Place the remote control lever / gear shift

lever in neutral.

2. Place the tilt lock lever in the release/upposition.

3. Slightly tilt the outboard motor up. The tiltsupport bar will lock automatically, sup-porting the outboard motor in a partiallyraised position. This outboard motor has2 positions for shallow water cruising.

4. To return the outboard motor to the nor-mal running position, place the remotecontrol lever / gear shift lever in neutral.

5. Place the tilt lock lever in the lock/downposition, then slightly tilt the outboard mo-tor up until the tilt support bar automati-cally returns to the free position.


Operation

69

6. Slowly lower the outboard motor to thenormal position.

EMU32861

Power tilt modelsThe outboard motor can be tilted up partiallyto allow operation in shallow water.

NOTICEECM00260

Do not tilt the outboard motor up so thatthe cooling water inlet on the lower unit isabove the surface of the water when set-ting up for and cruising in shallow water.Otherwise severe damage from overheat-ing can result.

EMU32942

Procedure for power tilt models1. Place the remote control lever / gear shift

lever in neutral.

2. Slightly tilt the outboard motor up to thedesired position using the power tiltswitch. WARNING! Using the power tiltswitch on the bottom cowling whilethe boat is moving or engine is oncould increase the risk of falling over-board and could distract the operator,increasing the risk of collision with an-other boat or an obstacle. [EWM01960]

ZMU07892

UP

ZMU01935

UP

DN


Operation

70

3. To return the outboard motor to the nor-mal running position, press the power tiltswitch and slowly tilt the outboard motordown.

EMU41370

Operating in other conditionsOperating in salt waterAfter operating in saltwater, brackish water, orwater high in other minerals, flush the coolingsystem with fresh water to minimize corrosionand clogging of the cooling water passageswith deposits. Also, rinse the exterior of theoutboard motor with fresh water.Operating in water containing mud, sand,silt, debris, or vegetationMud, sand, silt, debris, and vegetation in thewater may restrict water flow into the coolingwater inlet covers or clog internal water pas-sages. Check and clean the cooling water in-let covers frequently when operating in theseconditions. Flush the engine with clean, freshwater after use in these environments. Con-sult your dealer if normal water flow can notbe restored by cleaning the cooling water inletcovers or flushing with fresh water.


Maintenance

71

EMU43251

Transporting and storing out-board motor

WARNINGEWM02620

● USE CARE when transporting fuel tank,whether in a boat or car.

● DO NOT fill fuel container to maximumcapacity. Gasoline will expand consider-ably as it warms up and can build uppressure in the fuel container. This cancause fuel leakage and a potential firehazard.

● Leaking fuel is a fire hazard. When trans-porting and storing the outboard motor,disconnect the fuel line from the out-board motor to prevent fuel from leak-ing.

● Never get under the outboard motorwhile it is tilted. Severe injury could oc-cur if the outboard motor accidentallyfalls.

● Do not use the tilt support lever or knobwhen trailering the boat. The outboardmotor could shake loose from the tiltsupport and fall. If the outboard motorcannot be trailered in the normal run-ning position, use an additional supportdevice to secure it in the tilt position.

When storing or transporting the outboardmotor, make sure to follow the procedure list-ed below.● Disconnect the fuel hose from the fuel joint

on the outboard motor.● Tighten the fuel tank cap and its air vent

screw.● Store the fuel tank in a well-ventilated

place.● Store the fuel tank in a place that is stable

and not exposed to shocks.

When the outboard motor is tilted for a pro-longed time for mooring or trailering the boat,make sure to follow the procedure listed be-low.● Disconnect the fuel hose from the fuel joint

on the outboard motor.● Tighten the fuel tank cap and its air vent

screw.The outboard motor should be transportedand stored in the normal running position. Ifthere is insufficient road clearance in this po-sition, then trailer the outboard motor in the tiltposition using a motor support device such asa transom saver bar. Consult your Yamahadealer for further details.EMU43451

Dismounting the outboard motor

NOTICEECM01680

Do not hold the top cowling when mount-ing or dismounting the outboard motor.The top cowling could come off, causingthe outboard motor to fall.

1. Stop the engine and land the boat.2. Disconnect the fuel hose from the fuel

joint on the outboard motor.3. For electric start models, disconnect the

battery cables from the battery terminals.4. To prevent steering movement, turn the

adjuster lever to “A” (if equipped with theadjuster lever). To hold the steeringbracket easily, raise the tiller handle tothe vertical position (if equipped with thetiller handle).


Maintenance

72

5. Loosen the clamp screw(s).6. Hold the handgrip and steering bracket

as shown in the illustration and lift up theoutboard motor to dismount it from theboat.

7. When transporting or storing the out-board motor while removed from a boat,keep the outboard motor in the attitudeshown or use an outboard motor stand.

1. Steering bracket2. Handgrip

1

2ZMU07878


Maintenance

73

TIP:When transporting the outboard motor in ahorizontal position, place a towel or some-thing similar under the outboard motor to pro-tect it from damage.EMU28241

Storing outboard motorWhen storing your Yamaha outboard motorfor prolonged periods of time (2 months orlonger), several important procedures mustbe performed to prevent excessive damage.It is advisable to have your outboard motorserviced by an authorized Yamaha dealer pri-or to storage. However, you, the owner, with aminimum of tools, can perform the followingprocedures.

NOTICEECM01080

● To prevent problems which can becaused by oil entering the cylinder fromthe sump, keep the outboard motor inthe attitude shown when transportingand storing it. If storing or transportingthe outboard motor on its side (not up-right), put it on a cushion after drainingthe engine oil.

● Do not place the outboard motor on itsside before the cooling water hasdrained from it completely, otherwisewater may enter the cylinder through theexhaust port and cause engine trouble.

● Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.

EMU28305

ProcedureEMU43332

Flushing in a test tank

NOTICEECM00301

Before starting the engine, make sure tosupply water to the cooling water passag-es. Otherwise, the engine could overheatand be damaged.

1. Dismount the outboard motor from theboat. For further details, see page 71.

2. Wash the outboard motor body usingfresh water. NOTICE: Do not spray wa-ter into the air intake. [ECM01840] For furtherinformation, see page 76.

3. Fill the fuel tank with fresh fuel and addone ounce of “Yamaha Fuel Conditionerand Stabilizer” to each gallon of fuel.

TIP:The use of “Yamaha Fuel Conditioner andStabilizer” eliminates the need to drain thefuel system. Consult your Yamaha dealer orother qualified mechanic if the fuel system isto be drained instead.4. Disconnect the fuel hose from the fuel

joint on the outboard motor.5. Remove the top cowling and silencer

cover (if equipped). Remove the propel-ler. For further details, see page 86.

6. Position the outboard motor on a watertank. For further details, see page 39.


Maintenance

74

7. Fill the tank with fresh water to above thelevel of the anti-cavitation plate. NOTICE:If the fresh water level is below the lev-el of the anti-cavitation plate, or if thewater supply is insufficient, engineseizure may occur. [ECM00291]

8. Cooling system flushing is essential toprevent the cooling system from cloggingup with salt, sand, or dirt. In addition, fog-ging of the engine is mandatory to pre-vent excessive engine damage due torust. Perform the flushing and fogging atthe same time. WARNING! Do nottouch or remove electrical parts whenstarting or during operation. Keephands, hair, and clothes away fromthe flywheel and other rotating partswhile the engine is running. [EWM00091]

9. Run the engine at a fast idle for 10–15minutes in neutral position.

10. Just prior to turning off the engine, quicklyspray “Yamaha Stor-Rite Engine FoggingOil” alternately into each carburetor or thefogging hole of the silencer cover, ifequipped. When properly done, the en-gine will smoke excessively and almoststall.

11. Remove the outboard motor from the testtank. For further details, see page 71.

12. Drain the cooling water completely out ofthe outboard motor. Clean the body thor-oughly.

13. Install the silencer cover/cap (ifequipped) and top cowling.

EMU41071

Lubrication1. Change the gear oil. For instructions, see

page 87. Check the gear oil for the pres-ence of water that indicates a leaky seal.Seal replacement should be performedby an authorized Yamaha dealer prior touse.

2. Lubricate all grease fittings. For furtherdetails, see page 81.

TIP:For long-term storage, fogging the enginewith fogging oil is recommended. Contactyour Yamaha dealer for information aboutfogging oil and procedures for your outboardmotor.EMU30267

Cleaning and anticorrosion measures1. Wash down the exterior of the outboard

motor with fresh water and dry off com-pletely. NOTICE: Do not spray waterinto the air intake. [ECM01840] For further in-formation, see page 76.

1. Water surface2. Lowest water level

ZMU02051

1

2

ZMU07891


Maintenance

75

2. Spray the outboard motor exterior with“Yamaha Silicone Protectant”. NOTICE:Do not spray when the engine is run-ning. Also, do not spray near the si-lencer or into the engine. Otherwisethe engine could be damaged. [ECM01402]

3. Wax the cowling with a non-abrasive waxsuch as “Yamaha Silicone Wax”.

EMU28445

Flushing power unitPerform this procedure right after operationfor the most thorough flushing.

NOTICEECM01530

Do not perform this procedure while theengine is running. The water pump may bedamaged and severe damage from over-heating can result.

1. After shutting off the engine, unscrew thegarden hose connector from the fitting onthe bottom cowling.

2. Screw the garden hose adapter onto agarden hose, which is connected to afresh water supply, and then connect it tothe garden hose connector.

3. With the engine off, turn on the water tapand let the water flush through the cool-ing passages for about 15 minutes. Turnoff the water and disconnect the gardenhose adapter from the garden hose con-nector.

4. Reinstall the garden hose connector ontothe fitting on the bottom cowling. Tightenthe connector securely. NOTICE: Do notleave the garden hose connectorloose on the bottom cowling fitting orlet the hose hang free during normaloperation. Water will leak out of theconnector instead of cooling the en-

1. Fitting2. Garden hose connector3. Garden hose adapter


Maintenance

76

gine, which can cause serious over-heating. Be sure the connector istightened securely on the fitting afterflushing the engine. [ECM00541]

TIP:● When flushing the engine with the boat in

the water, tilting up the outboard motor untilit is completely out of the water will achievebetter results.

● For cooling system flushing instructions,see page 71.

EMU44340

Cleaning the outboard motorWhen cleaning the outboard motor, the topcowling must be installed.1. Wash the exterior of the outboard motor

using fresh water. NOTICE: Do notspray water into the air intake. [ECM01840]

2. Drain the cooling water completely out ofthe outboard motor. Clean the body thor-oughly.

EMU28461

Checking painted surface of outboard motorCheck the outboard motor for scratches,nicks, or flaking paint. Areas with damagedpaint are more likely to corrode. If necessary,clean and paint the areas. A touch-up paint isavailable from your Yamaha dealer.

EMU37012

Periodic maintenance

WARNINGEWM01942

These procedures require mechanicalskills, tools, and supplies. If you do nothave the proper skills, tools, or supplies toperform a maintenance procedure, have aYamaha dealer or other qualified mechan-ic do the work.The procedures involve disassemblingthe motor and exposing dangerous parts.To reduce the risk of injury from moving,hot, or electrical parts:● Turn off the engine and keep the key(s)

and engine shut-off cord (lanyard) withyou when you perform maintenance un-less otherwise specified.

● The power tilt switch operate even whenthe ignition key is off. Keep people awayfrom the switches whenever workingaround the motor. When the motor is tilt-ed, keep away from the area under it orbetween it and the clamp bracket. Besure no one is in this area before operat-ing the power tilt mechanism.

● Allow the engine to cool before handlinghot parts or fluids.

● Always completely reassemble the mo-tor before operation.

Maintenance, replacement, or repair of theemission control devices and systemsmay be performed by any marine enginerepair establishment or individual. All war-ranty repairs, however, including those tothe emission control system, must be per-formed by an authorized Yamaha marinedealership.

1. Air intake

1

ZMU07862


Maintenance

77

A service manual is available for purchasethrough your Yamaha dealer for owners whohave the mechanical skills, tools, and otherequipment necessary to perform mainte-nance not covered by this owner’s manual.EMU28511

Replacement partsIf replacement parts are necessary, use onlygenuine Yamaha parts or parts of equivalentdesign and quality. Any part of inferior qualitymay malfunction, and the resulting loss ofcontrol could endanger the operator and pas-sengers. Yamaha genuine parts and acces-sories are available from your Yamahadealer.EMU35521

Maintenance interval guidelinesThe service intervals provided in the Mainte-nance Chart were developed based upon“typical” use that includes operating at variedspeeds, with sufficient time for engine warmup and cool-down, a medium to light load, andan average cruising speed near the 3000 to4000 rpm range. As with any engine, howev-er, if your normal operating conditions are dif-ferent, you should consider service moreoften than shown, especially how often youchange your engine oil and gear oil. Exam-ples might include extended wide-open-throt-tle use or long periods of trolling or idling,carrying heavy loads, or frequent starting andstopping or shifting. More frequent mainte-nance will often pay off many times over in in-creased engine life and greater ownersatisfaction. Consult your Yamaha dealer foradditional maintenance recommendations.


Maintenance

78

EMU34446

Maintenance chart 1TIP:● Refer to the sections in this chapter for explanations of each owner-specific action.● The maintenance cycle on these charts assume usage of 100 hours per year and regular

flushing of the cooling water passages. Maintenance frequency should be adjusted when op-erating the engine under adverse conditions such as extended trolling.

● Disassembly or repairs may be necessary depending on the outcome of maintenancechecks.

● Expendable or consumable parts and lubricants will lose their effectiveness over time andthrough normal usage regardless of the warranty period.

● When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine shouldbe flushed with clean water after each use.

The “ ” symbol indicates the check-ups which you may carry out yourself.The “ ” symbol indicates work to be carried out by your Yamaha dealer.

Item Actions

Initial Every

20 hours (3 months)

100 hours (1 year)

300 hours (3 years)

500 hours (5 years)

Anode(s) (external) Inspection or replace-ment as necessary

Anode(s) (cylinder head)

Inspection or replace-ment as necessary

Anode(s) (cylinder head) Replacement

Battery (electrolyte lev-el, terminal) Inspection

Battery (electrolyte lev-el, terminal)

Fill, charging or replac-ing as necessary

Cooling water leakage Inspection or replace-ment as necessary

Cowling lock lever Inspection

Engine starting condi-tion/noise Inspection

Engine idle speed/noise Inspection

Engine oil Replacement

Engine oil filter (built into oil pan)

Inspection, cleaning or replacement as neces-sary

Fuel filter (disposal type) Replacement

Fuel line Inspection


Maintenance

79

Fuel line Inspection or replace-ment as necessary

Fuel pump Inspection or replace-ment as necessary

Fuel/engine oil leakage Inspection

Gear oil Replacement

Greasing points Greasing

Impeller/water pump housing


Impeller/water pump housing Replacement

Power tilt unit Inspection

Propeller/propeller nut/cotter pin


Shift link/shift cableInspection, adjustment or replacement as nec-essary

Spark plug(s) Inspection or replace-ment as necessary

Spark plug caps/spark plug wires


Water from the cooling water pilot hole Inspection

Throttle link/throttle ca-ble

Inspection, adjustment or replacement as nec-essary

Thermostat Inspection or replace-ment as necessary

Timing belt Inspection or replace-ment as necessary

Valve clearance Inspection and adjust-ment

Cooling water inlet Inspection

Main switch/stop switch/choke switch


Wire harness connec-tions/wire coupler con-nections


Fuel tank (Yamaha por-table tank)

Inspection and clean-ing as necessary

Item Actions

Initial Every

20 hours (3 months)

100 hours (1 year)

300 hours (3 years)

500 hours (5 years)


Maintenance

80

EMU34451

Maintenance chart 2

Item ActionsEvery

1000 hours

Exhaust guide/exhaust manifold


Timing belt Replacement


Maintenance

81

EMU28934

GreasingYamaha marine grease (Water resistant grease)F9.9, T9.9

ZMU06671


Maintenance

82

EMU44490

Cleaning and adjusting spark plugThe spark plug is an important engine compo-nent and is easy to inspect. The condition ofthe spark plug can indicate something aboutthe condition of the engine. For example, if thecenter electrode porcelain is very white, thiscould indicate an intake air leak or carburetionproblem in that cylinder. Do not attempt to di-agnose any problems yourself. Instead, takethe outboard motor to a Yamaha dealer. Youshould periodically remove and inspect thespark plug because heat and deposits willcause the spark plug to slowly break downand erode.1. Remove the spark plug caps from the

spark plugs.

2. Remove the spark plug. If electrode ero-sion becomes excessive, or if carbon andother deposits are excessive, you shouldreplace the spark plug with another of thecorrect type. WARNING! When remov-ing or installing a spark plug, be care-ful not to damage the insulator. Adamaged insulator could allow exter-nal sparks, which could lead to explo-sion or fire. [EWM00561]

3. Be sure to use the specified spark plug,otherwise the engine may not operateproperly. Before fitting the spark plug,measure the electrode gap with a wirethickness gauge; replace it if out of spec-ification.

4. When fitting the plug, wipe off any dirtfrom the threads, and then screw it in tothe correct torque.

TIP:If a torque-wrench is not available when youare reinstalling a spark plug, a good estimateof the correct torque is 1/12 turn past finger-tight. When you are installing a new sparkplug, a good estimate of the correct torque is1/2 to 2/3 turn past finger-tight.

1. Spark plug cap

Standard spark plug:BR6HS-10

1

ZMU07835

1. Spark plug gap2. Spark plug part number3. Spark plug I.D. mark (NGK)

Spark plug gap:0.9–1.0 mm (0.035–0.039 in)

Spark plug torque:25 Nm (2.55 kgf-m, 18.4 ft-lb)


Maintenance

83

EMU28991

Checking fuel filterCheck the fuel filter periodically. The fuel filteris a one piece, disposable type. If foreign mat-ter is found in the filter, replace it. For replace-ment of the fuel filter, consult your Yamahadealer.

EMU29044

Inspecting idle speed

WARNINGEWM00451

● Do not touch or remove electrical partswhen starting or during operation.

● Keep hands, hair, and clothes away fromthe flywheel and other rotating partswhile the engine is running.

NOTICEECM00490

This procedure must be performed whilethe outboard motor is in the water. A flush-ing attachment or test tank can be used.

If the boat is not equipped with a tachometerfor the outboard motor, use a diagnostic ta-chometer for this procedure. Results mayvary depending on whether testing is conduct-ed with the flushing attachment, in a test tank,or with the outboard motor in the water.1. Start the engine and allow it to warm up

fully in neutral until it is running smoothly.

2. Once the engine has warmed up, verifywhether the idle speed is set to specifica-tion. For idle speed specifications, seepage 14. If you have difficulty verifyingthe idle speed, or the idle speed requiresadjustment, consult a Yamaha dealer orother qualified mechanic.

EMU38806

Changing engine oil

WARNINGEWM00760

● Avoid draining the engine oil immediate-ly after stopping the engine. The oil ishot and should be handled with care toavoid burns.

● Be sure the outboard motor is securelyfastened to the transom or a stablestand.

NOTICEECM01710

Change the engine oil after the first 20hours of operation or 3 months, and every100 hours or at 1-year intervals thereafter.Otherwise the engine will wear quickly.

To prevent spilling oil where it could causedamage to nature, it is strongly recommendedthat you use an oil changer to change the en-gine oil. If an oil changer is not available, drainthe engine oil by removing the drain screw. Ifyou are not familiar with the procedure forchanging the engine oil, consult your Yamahadealer.1. Put the outboard motor in an upright po-

sition (not tilted). NOTICE: If the out-board motor is not level, the oil levelindicated on the oil dipstick may notbe accurate. [ECM01861]

1. Fuel filter

1

ZMU07836


Maintenance

84

2. Start the engine. Warm it up and keep theidle speed for 5-10 minutes.

3. Stop the engine and leave it for 5-10 min-utes.

4. Remove the top cowling.5. Remove the oil filler cap. Pull out the dip-

stick and use the oil changer to extractthe oil completely.

TIP:When using an oil changer, skip steps 6 and7.6. Prepare a suitable container that holds a

larger amount than the engine oil capaci-ty. Remove the drain screw and gasketwhile holding the container under thedrain hole. Let the oil drain completely.Wipe up any spilled oil immediately.

TIP:If the oil does not drain easily, change the tiltangle or turn the outboard motor to port andstarboard to drain the oil.7. Put a new gasket on the oil drain screw.

Apply a light coat of oil to the gasket andinstall the drain screw.

TIP:If a torque wrench is not available when youare installing the drain screw, finger tightenthe screw just until the gasket comes into con-tact with the surface of the drain hole. Thentighten 1/4 to 1/2 turn more. Tighten the drainscrew to the correct torque with a torquewrench as soon as possible.

1. Oil filler cap

1. Oil changer

1

ZMU02270

ZMU06620

1

1. Drain screw2. Gasket

Drain screw tightening torque:24 Nm (2.45 kgf-m, 17.7 ft-lb)

21

ZMU07967


Maintenance

85

8. Add the correct amount of oil through thefiller hole. Put back the filler cap and thedipstick. NOTICE: Overfilling the oilcould cause leakage or damage. If theoil level is above the upper level mark,drain until the level meets the speci-fied capacity. [ECM01850]

9. Leave the outboard motor for 5-10 min-utes.

10. Remove the oil dipstick and wipe it clean.11. Insert the dipstick and remove it again.

Be sure to completely insert the dipstickinto the dipstick guide, otherwise the oillevel measurement will be incorrect.

12. Recheck the oil level using the dipstick tobe sure the level falls between the upperand lower marks. Consult your Yamahadealer if the oil level is out of specified lev-el.

13. Start the engine and make sure that thelow oil pressure-alert indicator remainsoff. Also, make sure that there are no oilleaks. NOTICE: If the low oil pressure-

alert indicator comes on or if there areoil leaks, stop the engine and find thecause. Continued operation with aproblem could cause severe enginedamage. Consult your Yamaha dealerif the problem cannot be located andcorrected. [ECM01622]

14. Install the top cowling.15. Dispose of used oil according to local

regulations.

TIP:● For more information on the disposal of

used oil, consult your Yamaha dealer.● Change the oil more often when operating

the engine under adverse conditions suchas extended trolling.

EMU29114

Inspecting wiring and connectors● Inspect that each connector is engaged se-

curely.● Inspect that each ground lead is properly

secured.

EMU32112

Checking propeller

WARNINGEWM01881

You could be seriously injured if the en-gine accidentally starts when you are nearthe propeller. Before inspecting, remov-ing, or installing the propeller, place theshift control in neutral, turn the mainswitch to “ ” (off) and remove the key,

Recommended engine oil:YAMALUBE 4M FC-W or 4-stroke outboard motor oil


1. Oil dipstick2. Upper mark3. Lower mark

3 2 1

ZMU07792

ZMU07837


Maintenance

86

and remove the clip from the engine shut-off switch. Turn off the battery cut-offswitch if your boat has one.

Do not use your hand to hold the propellerwhen loosening or tightening the propellernut. Put a wood block between the anti-cavi-tation plate and the propeller to prevent thepropeller from turning.

Checkpoints● Check each of the propeller blades for ero-

sion from cavitation or ventilation, or otherdamage.

● Check the propeller shaft for damage.● Check the splines for wear or damage.● Check for fish line tangled around the pro-

peller shaft.

● Check the propeller shaft oil seal for dam-age.

EMU30662

Removing propellerEMU29197

Spline models1. Straighten the cotter pin and pull it out us-

ing a pair of pliers.2. Remove the propeller nut, washer, and

spacer (if equipped). WARNING! Do notuse your hand to hold the propellerwhen loosening the propeller nut.[EWM01890]

ZMU07969

ZMU07970

1. Cotter pin2. Propeller nut3. Washer4. Propeller5. Thrust washer

1. Cotter pin2. Propeller nut3. Washer4. Spacer5. Propeller6. Thrust washer


Maintenance

87

3. Remove the propeller, washer (ifequipped), and thrust washer.

EMU30672

Installing propellerEMU29234

Spline models

NOTICEECM00501

Make sure to use a new cotter pin andbend the ends over securely. Otherwise,the propeller could come off during opera-tion and be lost.

1. Apply Yamaha marine grease or a corro-sion resistant grease to the propellershaft.

2. Install the spacer (if equipped), thrustwasher, washer (if equipped), and pro-peller on the propeller shaft. NOTICE:Make sure to install the thrust washerbefore installing the propeller. Other-wise, the lower case and propellerboss could be damaged. [ECM01881]

3. Install the spacer (if equipped) and thewasher. Tighten the propeller nut to thespecified torque.

4. Align the propeller nut with the propellershaft hole. Insert a new cotter pin in thehole and bend the cotter pin ends.

NOTICE: Do not reuse the cotter pin.Otherwise, the propeller can come offduring operation. [ECM01891]

TIP:If the propeller nut does not align with the pro-peller shaft hole after tightening to the speci-fied torque, tighten the nut further to align itwith the hole.EMU2928B

Changing gear oil

WARNINGEWM00800

● Be sure the outboard motor is securelyfastened to the transom or a stablestand. You could be severely injured ifthe outboard motor falls on you.

● Never get under the lower unit while it istilted, even when the tilt support lever orknob is locked. Severe injury could oc-cur if the outboard motor accidentallyfalls.

1. Tilt the outboard motor so that the gear oildrain screw is at the lowest point possi-ble.

2. Place a suitable container under the gearcase.

3. Remove the gear oil drain screw and gas-ket. NOTICE: If there is an excessivequantity of metal particles on the mag-

Propeller nut tightening torque:F9.9EB 17 Nm (1.73 kgf-m, 12.5 ft-lb)F9.9EHB 17 Nm (1.73 kgf-m, 12.5 ft-lb)F9.9MHB 17 Nm (1.73 kgf-m, 12.5 ft-lb)T9.9EB 21 Nm (2.14 kgf-m, 15.5 ft-lb)T9.9EHB 21 Nm (2.14 kgf-m, 15.5 ft-lb)T9.9MHB 21 Nm (2.14 kgf-m, 15.5 ft-lb)T9.9PB 21 Nm (2.14 kgf-m, 15.5 ft-lb)T9.9PHB 21 Nm (2.14 kgf-m, 15.5 ft-lb)


Maintenance

88

netic gear oil drain screw, this can in-dicate lower unit problem. Consultyour Yamaha dealer. [ECM01900]

TIP:● If a magnetic gear oil drain screw is

equipped, remove all metal particles fromthe screw before installing it.

● Always use new gaskets. Do not reuse theremoved gaskets.

4. Remove the oil level plug and gasket toallow the oil to drain completely.NOTICE: Check the used gear oil afterit has been drained. If the gear oil ismilky or contains water or a largeamount of metal particles, the gearcase may be damaged. Have aYamaha dealer check and repair theoutboard motor. [ECM00713]

TIP:For disposal of used oil, consult your Yamahadealer.5. Put the outboard motor in a vertical posi-

tion. Using a flexible or pressurized fillingdevice, inject the gear oil into the gear oildrain screw hole.

6. Put a new gasket on the oil level plug.When the oil begins to flow out of the oillevel plug hole, insert and tighten the oillevel plug.

7. Put a new gasket on the gear oil drainscrew. Insert and tighten the gear oildrain screw.

1. Gear oil drain screw2. Oil level plug

ZMU06685

2

1

Recommended gear oil:Yamalube Marine Gearcase Lube or Hypoid gear oil

Recommended gear oil grade:SAE 90 API GL-4

Gear oil quantity:F9.9EB 0.150 L (0.159 US qt, 0.132 Imp.qt)F9.9EHB 0.150 L (0.159 US qt, 0.132 Imp.qt)F9.9MHB 0.150 L (0.159 US qt, 0.132 Imp.qt)T9.9EB 0.370 L (0.391 US qt, 0.326 Imp.qt)T9.9EHB 0.370 L (0.391 US qt, 0.326 Imp.qt)T9.9MHB 0.370 L (0.391 US qt, 0.326 Imp.qt)T9.9PB 0.370 L (0.391 US qt, 0.326 Imp.qt)T9.9PHB 0.370 L (0.391 US qt, 0.326 Imp.qt)

Tightening torque:9 Nm (0.92 kgf-m, 6.6 ft-lb)

ZMU06686


Maintenance

89

EMU29316

Inspecting and replacing anode(s)Yamaha outboard motors are protected fromcorrosion by sacrificial anodes. Inspect theexternal anodes periodically. Remove scalesfrom the surfaces of the anodes. Consult aYamaha dealer for replacement of externalanodes.

NOTICEECM00720

Do not paint anodes, as this would renderthem ineffective.

TIP:Inspect ground leads attached to external an-odes on equipped models. Consult a Yamahadealer for inspection and replacement of inter-nal anodes attached to the power unit.EMU29323

Checking battery (for electric start models)

WARNINGEWM01902

Battery electrolyte is poisonous and caus-tic, and batteries generate explosive hy-drogen gas. When working near thebattery:● Wear protective eye gear and rubber

gloves.● Do not smoke or bring any other source

of ignition near the battery.

The procedure for checking the battery variesfor different batteries. This procedure con-tains typical checks that apply to many batter-ies, but you should always refer to the batterymanufacturer’s instructions.

NOTICEECM01920

A poorly maintained battery will quicklydeteriorate.

1. Check the electrolyte level.

Tightening torque:9 Nm (0.92 kgf-m, 6.6 ft-lb)

1. Anode

1. Anode

1

ZMU07838

1

ZMU07879

1. Anode

1ZMU07880


Maintenance

90

2. Check the battery’s charge. If your boat isequipped with the digital speedometer,the voltmeter and low battery alert func-tions will help you monitor the battery’scharge. If the battery needs charging,consult your Yamaha dealer.

3. Check the battery connections. Theyshould be clean, secure, and covered byan insulating cover. WARNING! Badconnections can produce shorting orarcing and cause an explosion. [EWM01912]

EMU29334

Connecting the battery

WARNINGEWM00572

Mount the battery holder securely in a dry,well-ventilated, vibration-free location inthe boat. Install a fully charged battery inthe holder.

NOTICEECM01124

Do not reverse the battery cables. Other-wise, the electrical parts could be dam-aged.

1. Make sure the main switch (on applicablemodels) is “ ” (off) before working onthe battery.

2. Connect the red battery cable to thePOSITIVE (+) terminal first. Then con-nect the black battery cable to the NEGA-TIVE (-) terminal.

3. The electrical contacts of the battery andcables must be clean and properly con-nected, or the battery will not start the en-gine.

EMU29371

Disconnecting the battery1. Turn off the battery cut-off switch (if

equipped) and main switch. NOTICE: Ifthey are left on, the electrical systemcan be damaged. [ECM01930]

2. Disconnect the negative cable(s) fromthe negative (-) terminal. NOTICE: Al-ways disconnect all negative (-) ca-bles first to avoid a short circuit anddamage to the electrical system.[ECM01940]

3. Disconnect the positive cable(s) and re-move the battery from the boat.

4. Clean, maintain, and store the battery ac-cording to the manufacturer’s instruc-tions.

1. Red cable2. Black cable3. Battery

ZMU01811

1

23


Trouble Recovery

91

EMU29427

TroubleshootingA problem in the fuel, compression, or ignitionsystems can cause poor starting, loss of pow-er, or other problems. This section describesbasic checks and possible remedies, and cov-ers all Yamaha outboard motors. Thereforesome items may not apply to your model.If your outboard motor requires repair, bring itto your Yamaha dealer.If the engine trouble-alert indicator is flashing,consult your Yamaha dealer.

Starter will not operate.Q. Is battery capacity weak or low?A. Check battery condition. Use battery of rec-ommended capacity.

Q. Are battery connections loose or corrod-ed?A. Tighten battery cables and clean batteryterminals.

Q. Is fuse for electric start relay or electric cir-cuit blown?A. Check for cause of electric overload andrepair. Replace fuse with one of correct am-perage.

Q. Are starter components faulty?A. Have serviced by a Yamaha dealer.

Q. Is shift lever in gear?A. Shift to neutral.

Engine will not start (starter operates).Q. Is fuel tank empty?A. Fill tank with clean, fresh fuel.

Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?A. Clean or replace filter.

Q. Is starting procedure incorrect?A. See page 49.

Q. Has fuel pump malfunctioned?A. Have serviced by a Yamaha dealer.

Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replace withrecommended type.

Q. Are spark plug cap(s) fitted incorrectly?A. Check and re-fit cap(s).

Q. Is ignition wiring damaged or poorly con-nected?A. Check wires for wear or breaks. Tighten allloose connections. Replace worn or brokenwires.

Q. Are ignition parts faulty?A. Have serviced by a Yamaha dealer.

Q. Is engine shut-off cord (lanyard) not at-tached?A. Attach cord.

Q. Are engine inner parts damaged?A. Have serviced by a Yamaha dealer.

Engine idles irregularly or stalls.Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replace withrecommended type.

Q. Is fuel system obstructed?


Trouble Recovery

92

A. Check for pinched or kinked fuel line or oth-er obstructions in fuel system.



Q. Have ignition parts failed?A. Have serviced by a Yamaha dealer.

Q. Has alert system activated?A. Find and correct cause of alert.

Q. Is spark plug gap incorrect?A. Inspect and adjust as specified.


Q. Is specified engine oil not being used?A. Check and replace oil as specified.

Q. Is thermostat faulty or clogged?A. Have serviced by a Yamaha dealer.

Q. Are carburetor adjustments incorrect?A. Have serviced by a Yamaha dealer.

Q. Is fuel pump damaged?A. Have serviced by a Yamaha dealer.

Q. Is air vent screw on fuel tank closed?A. Open air vent screw.

Q. Is choke knob pulled out?

A. Return to home position.

Q. Is motor angle too high?A. Return to normal operating position.

Q. Is carburetor clogged?A. Have serviced by a Yamaha dealer.

Q. Is fuel joint connection incorrect?A. Connect correctly.

Q. Is throttle valve adjustment incorrect?A. Have serviced by a Yamaha dealer.

Q. Is battery cable disconnected?A. Connect securely.

Alert buzzer sounds or indicator lights.Q. Is cooling system clogged?A. Check water intake for restriction.

Q. Is engine oil level low?A. Fill oil tank with specified engine oil.

Q. Is heat range of spark plug incorrect?A. Inspect spark plug and replace it with rec-ommended type.

Q. Is specified engine oil not being used?A. Check and replace oil with specified type.

Q. Is engine oil contaminated or deteriorated?A. Replace oil with fresh, specified type.

Q. Is oil filter clogged?A. Have serviced by a Yamaha dealer.

Q. Has oil feed/injection pump malfunc-tioned?A. Have serviced by a Yamaha dealer.


Trouble Recovery

93

Q. Is load on boat improperly distributed?A. Distribute load to place boat on an evenplane.

Q. Is water pump or thermostat faulty?A. Have serviced by a Yamaha dealer.

Q. Is there excess water in fuel filter cup?A. Drain filter cup.

Engine power loss.Q. Is propeller damaged?A. Have propeller repaired or replaced.

Q. Is propeller pitch or diameter incorrect?A. Install correct propeller to operate outboardat its recommended speed (r/min) range.

Q. Is trim angle incorrect?A. Adjust trim angle to achieve most efficientoperation.

Q. Is motor mounted at incorrect height ontransom?A. Have motor adjusted to proper transomheight.

Q. Has alert system activated?A. Find and correct cause of alert.

Q. Is boat bottom fouled with marine growth?A. Clean boat bottom.

Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replace withrecommended type.

Q. Are weeds or other foreign matter tangledon gear housing?

A. Remove foreign matter and clean lowerunit.

Q. Is fuel system obstructed?A. Check for pinched or kinked fuel line or oth-er obstructions in fuel system.



Q. Is spark plug gap incorrect?A. Inspect and adjust as specified.


Q. Have electrical parts failed?A. Have serviced by a Yamaha dealer.

Q. Is specified fuel not being used?A. Replace fuel with specified type.

Q. Is specified engine oil not being used?A. Check and replace oil with specified type.

Q. Is thermostat faulty or clogged?A. Have serviced by a Yamaha dealer.

Q. Is air vent screw closed?A. Open the air vent screw.

Q. Is fuel pump damaged?A. Have serviced by a Yamaha dealer.

Q. Is fuel joint connection incorrect?


Trouble Recovery

94

A. Connect correctly.

Q. Is heat range of spark plug incorrect?A. Inspect spark plug and replace it with rec-ommended type.

Q. Is high pressure fuel pump drive belt bro-ken?A. Have serviced by a Yamaha dealer.

Q. Is engine not responding properly to shiftlever position?A. Have serviced by a Yamaha dealer.

Engine vibrates excessively.Q. Is propeller damaged?A. Have propeller repaired or replaced.

Q. Is propeller shaft damaged?A. Have serviced by a Yamaha dealer.

Q. Are weeds or other foreign matter tangledon propeller?A. Remove and clean propeller.

Q. Is motor mounting bolt loose?A. Tighten bolt.

Q. Is steering pivot loose or damaged?A. Tighten or have serviced by a Yamahadealer.EMU29433

Temporary action in emergencyEMU29441

Impact damage

WARNINGEWM00870

The outboard motor can be seriously dam-aged by a collision while operating ortrailering. Damage could make the out-board motor unsafe to operate.

If the outboard motor hits an object in the wa-ter, follow the procedure below.

1. Stop the engine immediately.2. Check the control system and all compo-

nents for damage. Also, check the boatfor damage.

3. Whether damage is found or not, returnto the nearest harbor slowly and careful-ly.

4. Have a Yamaha dealer check the out-board motor before operating it again.

EMU30683

Replacing fuseIf a fuse has blown, open the fuse holder andremove the fuse with a fuse puller. Replace itwith a spare one of the proper amperage.

WARNINGEWM00631

Substituting an incorrect fuse or a piece ofwire could allow excessive current flow.This could cause electric system damageand a fire hazard.

Consult your Yamaha dealer if the new fuseimmediately blows again.


Trouble Recovery

95

EMU32130

Power tilt will not operateIf the engine cannot be tilted up or down withthe power tilt because of a discharged batteryor a failure with the power tilt unit, the enginecan be tilted manually.1. Loosen the manual valve screw by turn-

ing it counterclockwise until it stops.

2. Put the engine in the desired position,then tighten the manual valve screw byturning it clockwise.

EMU29533

Starter will not operateIf the starter mechanism does not operate(the engine cannot be cranked with the start-er), the engine can be started with an emer-gency starter rope.

WARNINGEWM01022

● Use this procedure only in an emergen-cy to return to the nearest port for re-pairs.

● When the emergency starter rope isused to start the engine, the start-in-gear protection device does not operate.Make sure the remote control lever is inneutral. Otherwise the boat could unex-pectedly start to move, which could re-sult in an accident.

● Attach the engine shut-off cord to a se-cure place on your clothing, or your armor leg while operating the boat.

● Do not attach the cord to clothing thatcould tear loose. Do not route the cordwhere it could become entangled, pre-venting it from functioning.


● Make sure no one is standing behindyou when pulling the starter rope. Itcould whip behind you and injure some-one.

● An unguarded, rotating flywheel is verydangerous. Keep loose clothing andother objects away when starting the en-gine. Use the emergency starter ropeonly as instructed. Do not touch the fly-wheel or other moving parts when theengine is running. Do not install thestarter mechanism or top cowling afterthe engine is running.

1. Fuse box2. Fuse (10 A)3. Spare fuse (10 A)4. Fuse puller

1. Manual valve screw


Trouble Recovery

96

● Do not touch the ignition coil, spark plugwire, spark plug cap, or other electricalcomponents when starting or operatingthe motor. You could get an electricalshock.

EMU29562

Emergency starting engine1. Remove the top cowling.2. Remove the start-in-gear protection ca-

ble from the starter, if equipped.

3. Remove the starter/flywheel cover afterremoving the bolt(s).

4. Prepare the engine for starting. For fur-ther information, see page 49. Be surethe engine is in neutral and that the clip isattached to the engine shut-off switch.The main switch must be “ ” (on), ifequipped.

5. If equipped the choke knob, pull out itwhen the engine is cold. After the enginestarts, gradually return the choke knob toits home position as the engine warmsup.

6. Insert the knotted end of the emergencystarter rope into the notch in the flywheelrotor and wind the rope several turnsaround the flywheel clockwise.

7. Give a strong pull straight out to crankand start the engine. Repeat if neces-sary.

1. Start-in-gear protection cable

OFF

ON

ZMU01880

ZMU07907


Trouble Recovery

97

EMU29671

Engine fails to operateEMU35321

Emergency engine operationIf the battery voltage is low or in the unlikelyevent of an ignition system malfunction, theengine speed may become erratic or the en-gine may stop. In such a situation, follow theprocedure below.Disconnect the yellow cord (emergency cir-cuit) of the CDI unit.Run the engine at low speed and return toport. NOTICE: Follow this procedure onlyin an emergency and just long enough toreturn to port for repairs. [ECM00381]

EMU33501

Treatment of submerged motorIf the outboard motor is submerged, immedi-ately take it to a Yamaha dealer. Otherwisesome corrosion may begin almost immediate-

ly. NOTICE: Do not attempt to run the out-board motor until it has been completelyinspected. [ECM00401]

1. Yellow cord


Consumer information

98

EMU29836

YAMAHA FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY

ZMU07048

Yamaha Motor Corporation, U.S.A. and Yamaha Motor Canada Ltd. (“Yamaha”) hereby warrant that new Yamaha four-stroke outboard motors will be free from defects in material and workmanship for the period of time stated herein, subject to certain stated limitations.

PERIOD OF WARRANTY. Any new Yamaha four-stroke outboard motor purchased from an authorized Yamaha dealer in the customer’s country of residence (United States or Canada) and registered with Yamaha will be warranted against defects in material or workmanship, subject to exclusions noted herein, for the following applicable period determined by type of use:

The second and third year of warranty (if applicable) shall be limited to covering the cost of parts and labor for major components only. The major components covered are:

WARRANTY REGISTRATION. To be eligible for warranty coverage, the outboard motor must be registered with Yamaha in the country of residence. Warranty registration can be accomplished by any authorized Yamaha Outboard Motor Dealer.

OBTAINING REPAIRS UNDER WARRANTY. During the period of warranty, any authorized Yamaha Outboard Motor Dealer in the country of residence will, free of charge, repair or replace, at Yamaha’s option, any parts adjudged defective by Yamaha due to faulty workmanship or material from the factory. All replaced parts will become the property of Yamaha. If the customer is temporarily using a U.S.-registered outboard motor in Canada, or a Canada-registered outboard motor in the United States, and it needs warranty repairs, the owner should contact a nearby authorized Yamaha Outboard Motor Dealer for assistance. The local dealer will contact Yamaha on the owner’s behalf so that needed repairs can be made as quickly as possible.

CUSTOMER’S RESPONSIBILITY. Under the terms of this warranty, the customer will be responsible for ensuring that the outboard motor is properly operated, maintained, and stored as specified in the applicable Owner’s Manual. The owner of the outboard motor shall give notice to an authorized Yamaha Outboard Motor Dealer of any and all apparent defects within ten (10) days of discovery and make the motor available at that time for inspection and repairs at the dealer’s place of business.

Replacement parts used in warranty repairs will be warranted for the balance of the applicable warranty period.

• Pleasure use – three (3) years from the date of purchase.

Power Unit Section• Power Head• Intake Manifold• Carburetor Assembly and its Related Components• Fuel Injection System and its Related Components• Fuel and Oil Pump Assemblies• Ignition System (Standard and Microcomputer)Lower Unit Section Bracket Section• Exhaust System• Bracket System• Upper Casing• Power Trim and Tilt Assembly• Lower Unit Assembly

• Commercial application – one (1) year from the date of purchase. A commercial application is defined as any use of the outboard motor to generate income (excluding tournament fishing) or support business operations in any way during the warranty period, without regard to the type or percentage of commercial use. Yamaha reserves the right to modify incorrect registration data and reduce the warranty period to reflect commercial use.

• Yamaha peripheral equipment included with the motor, such as gauges, fuel tanks, and hoses, remote control boxes, and wiring external from the motor unit, will be warranted for one (1) year from the date of purchase for either pleasure or commercial use.



99

ZMU07047

SPECIFIC PARTS EXCLUDED FROM WARRANTY. Parts replaced due to normal wear or routine maintenance such as oil, spark plugs, shear pins, propellers, hubs, fuel and oil filters, brushes for the starter motor and power tilt motor, water pump impellers, and anodes, are not covered by warranty. Charges for removal of the motor from a boat and transporting the motor to and from an authorized Yamaha Outboard Motor Dealer are excluded from warranty coverage.

EMISSION CONTROL WARRANTY (United States only). Yamaha warrants to the ultimate purchaser and any subsequent owner, that the emission control components on this engine are designed, built and equipped so as to conform at the time of sale with applicable regulations under section 213 of the Clean Air Act and that this engine is covered against defects in materials and workmanship which cause said engine to fail to conform with applicable exhaust emission regulations for five (5) years from the date of purchase or 175 hours of operation, whichever comes first. Evaporative components (e.g., hoses, fuel tank, fuel cap) are two (2) years from the date of purchase. Some states have different emission control warranty provisions. As these vary from state to state, consult your Yamaha dealer or contact Yamaha Customer Relations at 1-866-894-1626 for more information.

TRANSFER OF WARRANTY Transfer of the warranty from the original purchaser to any subsequent purchaser is possible by having the motor inspected by an authorized Yamaha Outboard Motor Dealer and requesting the dealer to submit a change of registration to Yamaha within ten (10) days of the transfer.

THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE/PROVINCE TO PROVINCE.

YAMAHA MAKES NO OTHER WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE OBLIGATIONS AND TIME LIMITS STATED IN THIS WARRANTY ARE HEREBY DISCLAIMED BY YAMAHA AND EXCLUDED FROM THIS WARRANTY. SOME STATES/PROVINCES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU. ALSO EXCLUDED FROM THIS WARRANTY ARE ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING LOSS OF USE. SOME STATES/PROVINCES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU.

GENERAL EXCLUSIONS FROM WARRANTY. This warranty will not cover the repair of damage if the damage is a result of abuse or neglect of the product. Examples of abuse and neglect include, but are not limited to:1. Racing or competition use, modification of original parts, abnormal strain.2. Lack of proper maintenance and off season storage as described in the Owner’s Manual; installation of parts or accessories that are

not equivalent in design and quality to genuine Yamaha parts.3. Operation of the motor at an rpm other than specified, use of lubricants or oils that are not suitable for outboard motor use.4. Damage as a result of accidents, collisions, contact with foreign materials, or submersion.5. Growth of marine organism on motor surfaces.6. Normal deterioration.

Specific parts excluded from the second and third year of warranty (if applicable) are:• Top and Bottom Cowling• Electric Components (other than ignition system)• Rubber Components (such as hoses, tubes, rubber seals, fittings, and clamps)



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IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE U.S.A. OR CANADA

Welcome to the Yamaha Family!

Congratulations on the purchase of your new Yamaha products. Yamaha is commit-ted to exceptional customer satisfaction and we want your ownership experience to be a satisfying one. Please read the following warranty information to help ensure satisfaction with your Yamaha.

This model was manufactured with specifications appropriate for sale and use in the U.S.A. and Canada. Please note the following information:

Your Yamaha model may not be sold in some countries. Therefore, a Yamaha dealer outside the United States or Canada may not have all of the replacement parts or technical information available to provide proper service. This may unavoidably delay repairs. Thank you for your understanding should this happen.

TIP:

1. As explained in the Limited Warranty Statement, the Yamaha warranty covers your Yamaha when it is registered and used in your country of residence. If you are temporarily using a U.S.-registered outboard motor in Canada, or a Canada-registered outboard motor in the United States, and it needs warranty repairs, you should contact a nearby authorized Yamaha Outboard Motor Dealer for assistance. The local dealer will contact Yamaha on the owner’s behalf so that needed repairs can be made as quickly as possible.

2. If you need repairs while temporarily using your Yamaha in another country, contact the local authorized Yamaha distributor for that country. Yamaha will work with that distributor to make the needed repairs as quickly as possible. If you have to pay for a repair that you believe your warranty would have covered at home, present all repair orders, receipts, or other related documents to your local dealer when you return home. He will be able to contact Yamaha on your behalf to see if any refund can be provided.

3. If your Yamaha is registered or used primarily outside the United States or Canada, the warranty printed in this manual does not apply to you. Contact the dealer who sold the Yamaha marine power unit to you for customer support information.

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For your best ownership experience, think Genuine Yamaha!

Genuine Yamaha Parts — Genuine Yamaha replacement parts are the exact same partsas the ones originally equipped on your vehicle, providing you with the performance and du-rability you have come to expect. Why settle for aftermarket parts that may not provide fullconfidence and satisfaction?

Genuine Yamaha Accessories — Yamaha only offers accessories that meet our high stan-dards for quality and performance. Buy with confidence, knowing your Genuine Yamaha Ac-cessories will fit right and perform right — right out of the box.

Yamalube — Take care of your Yamaha with legendary Yamalube oils, lubricants, and careproducts. They’re formulated and approved by the toughest judges we know: the Yamahaengineering teams that know your Yamaha from the inside out.

Genuine Yamaha Service Manuals — Get the same factory manual for your vehicle thatthe technicians at your authorized Yamaha dealer use. Service manuals are availablethrough your Yamaha dealer or you can order them directly through yamahapubs.com (USAonly).

Genuine Yamaha products are available only from your Yamaha dealer.

Find out more at yamaha–motor.com


Printed on recycled paperPrinted in JapanMay 2013–1.9 × 1 CR


LIT-18626-10-15

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Transcript of LIT-18626-10-15