Post on 18-Mar-2018
F250B
Offshore, inshore, saltwater or fresh, today’s larger boats demand big power. At the same time, today’s savvy consumers are demanding clean, quiet, fuel-effi cient four stroke outboards; all in a package that’s easy to operate and convenient to use. Tough to do? Not for Yamaha.
Yamaha has successfully integrated its highly-acclaimed Command Link® Digital Electronic Control system with its reliable and long-proven F250 outboard. Feature packed with all the innovation, reliability, and long-term value that are synonymous with Yamaha, this new outboard offers the versatility, power, and convenience today’s boaters demand.
AVAILABLE MODELS:
F250BTXR
LF250BTXR
F250BTUR
LF250BTURCONVENIENCE AND CONTROLFrom its plug-and-play type installation to the smooth feel created through electronic control of all throttle and shift functions, Yamaha’s new F250B is the perfect blend of power, convenience, and control. Features like built-in multiple engine synchronization, adjustable throttle friction and neutral detents, and built-in redundancy systems make it the ideal engine with ideal control.
PERFORMANCE The Yamaha F250B is a proven marine powerhouse built upon a compact and lightweight 60-degree, 3.3 iter (204 c.i.) block. Its Variable Camshaft Timing dramatically increases low and mid-range torque, for surprising holeshot and mid-range throttle capabilities. A specially-designed air intake system; coupled with proven Yamaha multi-point electronic fuel injection; delivers, easy, instant starts, fast acceleration, and maximum top end speed. An electronically-controlled single throttle valve feeds individual long intake tracks, which dramatically improves hole shot, acceleration, and mid-range performance. And, because it’s a Yamaha four stroke outboard, you know it’s clean, quiet, smooth, and economical.
RELIABILITY/DURABILITYYamaha has taken the new F250B to the next level of reliability and durability, by upgrading its corrosion protection package. Sharing the same special powerhead painting process with its big brother, the Yamaha F350, now the inside as well as the outside of the powerhead is protected with special anti-corrosion paint using an advanced “electro-deposited” process. This helps ensure longer engine life, even in the harshest environments, which meansmore years of use, enjoyment, and peace of mind.
VALUEEnhanced reliability. Exceptionally smooth and quiet performance. Outstanding fuel economy. Maximum performance and convenience. All combine to make the new Yamaha F250B an incredibly powerful value, both now and in the years ahead.
HOT SHEETYA M A H A M A R I N E
Effective July 1, 2008
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featuring Command Link® Controls and Gauges**
** Command Link controls and gauges sold separately to meet specifi c needs.
F250B FeaturesF250B Features
F250B featuring Command Link® Controls and GaugesF250B featuring Command Link® Controls and Gauges
Electronic Single Throttle Valve
Reliability/DurabilityPerformance Convenience
Fuel VaporReduction System
Large Water Separator with Water Sensor
Warning & Protection Systems
Enhanced Ultimate Corrosion Protection System
Serpentine Timing Belt (Kevlar)
Multi-Point ElectronicFuel Injection
Direct Coil-in-CapIgnition
Lubricant CoatedStrong Forged Piston
In-Bank™ Exhaust
Tuned Long Track Intake Manifold
Command LinkDigital ElectronicControls
Location ExchangeablePTT Switch
Command Link Gauges (square or round)
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By just pressing a button on the Command Link tachometer, the operator can adjust the engine’s trolling speed from 600 ~ 1000 rpm, in 50-rpm increments. This helps provide precise and consistent trolling speeds in a wide array of conditions.
Command Link Digital Electronic Controls feature automatic engine sychronization in twin and triple engine confi gurations during normal cruise conditions. It’s not only convenient, it helps maximize effi ciency and running performance.
Yamaha’s new Command Link Digital Electronic Control systemsare electronically-actuated, meaning there are no cables physically moving. This greatly reduces shifting and throttle effort by eliminating common cable friction. All Command Link Digital Electronic Controls have adjustable throttle lever friction and shifting detents, and feature critical system redundancy for added reliability.
Precise Trolling Control
Choice of Control Style
Command Link Digital Electronic Controls come in a variety of styles, including the new 6X7 concealed side-mount. They’re also available in binnacle style for single, twin, and triple engine applications; and all feature smooth, virtually effortless shifting and throttle functions.
Automatic Engine Synchronization
Smooth Reliable Shifting and Throttle
F250B featuring Command Link® Controls and GaugesF250B featuring Command Link® Controls and Gauges
Advanced Technology
Second Station
Main Station
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Command Link Digital Electronic Controls make dual station installations easy and conveninent to use. They feature ‘plug-’n’-play’ water-resistant connections and simple-to-use station selector switches and, since there’s no conventional remote control cables, shifting and throttle functions are a breeze.
Easy Dual Station Control
Engine exhaust is routed through a maze before exiting above the waterline through the idle exhaust relief outlet, for unbelieveably smooth and quiet operation.
Smooth and Quiet
All F250B models are equipped with an Engine Control Module that interfaces with Yamaha Diagnostic System software. This provides a view of selected past and current running conditions, to help technicians provide a complete and accurate diagnosis.
More Information
Command Link gauges offer a wealth of information to the operator in order to help provide effi cient and effective operation. There’s even a combination Speedometer and Fuel Management Gauge, to help conserve valuable dash space.
Easy Dual Station Control
F250B featuring Command Link® Controls and GaugesF250B featuring Command Link® Controls and Gauges
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Yamaha’s variable camshaft timing system advances and retards the angle of the intake camshaft to dramatically increase power and throttle response in the low- and mid-rpm ranges. This gives the engine substantially greater torque between 2000 ~ 3500 RPM to provide excellent power to plane.
All air entering the engine block of the F250B is routed through a single electronically-controlled throttle valve, to ensure the precise amount of air necessary for optimum power and fuel effi ciency. The air silencer box reduces intake noise and air turbulence for smooth, quiet operation.
Individual intake and exhaust camshafts provide more precise valve timing control and have less moving parts than conventional push rod systems for increased reliability. This superior design also allows for use of 4 valves per cylinder which exchange intake and exhaust gases more effi ciently for responsive power and increased fuel economy.
Reliable and Responsive
Hole Shot and Mid-Range Punch
Fuel Effi ciency
Six individual compact electronic fuel injectors deliver the exact amount of fuel needed for optimum performance and economy. Controlled by the Engine Control Module via input from an array of on-engine sensors, their location just above the intake valves enhances fuel atomization, resulting in more effi cient combustion.
Precise Throttle Control
Reliable and Responsive
F250B featuring Command Link® Controls and GaugesF250B featuring Command Link® Controls and Gauges
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The F250B comes standard with dual pairs of water inlets, for increased cooling effi ciency. Located on the front and both sides of the lower unit, each pair of pick-ups operate independently of each other to provide proper water fl owin a wide variety of applications and conditions.
All F250B outboards feature a large, on-engine water separating fuel fi lter with a water sensor. Used in conjunction with Yamaha’s 10-Micron Water SeparatingFuel Filter, it helps separate water and contaminants from the fuel before they can reach the outboard’s other fi lters and fuel injectors.
Yamaha improved their legendary Ultimate Corrosion Protection System for the F250B. Yamaha’s proprietary alloys, ACP-221 paint process, and freshwater fl ush device are just the start. Multiple sacrifi cial anodes in and on the power head, mid-section, and lower unit; a special electro-deposited paint process that coats both the entire outside and the inside passages of the block and cylinder heads; and a specially-painted and treated exhaust system means better long-term protection and maximum value.
Long Term Value
Controlled Operating Termperature
Internal Protection from the Elements
The F250B features a proven cowling drain system, to easily and effi ciently drain away any water that enters the cowling during normal engine operation. Incoming air is routed through a labyrinth of passages that trap and drain water before it enters the engine’s intake, for maximum reliability.
Cleaner Fuel
Long Term Value
F250B featuring Command Link® Controls and GaugesF250B featuring Command Link® Controls and Gauges
System Diagram
Vapor
WaterSeparator
Command Link Speedometer
FuelPump
Filter
Canister
Air
Fuel
ShiftPositionSensor
FuelVaporShut-OffValve
Cam Position SensorCrank Position SensorIntake Air Pressure SensorOil Pressure SensorEngine Temperature SensorIntake Air Temperature SensorKnock SensorCooling Water Pressure Sensor (Optional)Over Water Speed Sensor (Optional)
Command LinkDigital Electronic Remote Control
Hub
Vapor Separator/Fuel Injection Pump
Shift Actuator
Battery
ThrottlePositionSensor
Ignition Key Switch
ReliefValve
ECU
Throttle Control
Ignition Control
Fuel Control
Variable Camshaft Timing Control
Fuel InjectorVCT
Fuel Injector
IG Coil
Shift Control
GPS
ECM
(Variable Troll RPM Control)
Command LinkConcealedRemote Control(example)
Water Sensor
Command Link Tachometer
VCT
IG Coil
(Optional, customer-provided
compatible unit)
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System Diagram
F250B featuring Command Link® Controls and GaugesF250B featuring Command Link® Controls and Gauges
This document contains many of Yamaha’s valuable trademarks. It may also contain trademarks belonging to other companies. Any references to other companies or their products are for identifi cation purposes only, and are not intended to be an endorsement.
Due to Yamaha’s ongoing commitment to product improvement, we reserve the right to change without notice, equipment, materials, or specifi cations.
© 2008 Yamaha Motor Corporation
F250B Specifi cations
Model F250B / LF250B
Type Four Stroke, 24-Valve DOHC Direct-Action, 60° V6
Displacement 3352cc (204.6 c.i.)
Bore x Stroke 94.0 x 80.5mm (3.70 x 3.17 in)
Full Throttle RPM Range 5000 - 6000
Horsepower Rating at Propshaft 250 hp @ 5500 rpm (183.9kw @ 5500 rpm)
Compression Ratio 9.9:1
Fuel Induction/Scavenging DOHC / 24-valve with Variable Camshaft Timing
Alternator Output 46 Amp (38 Amp @ 1000 RPM)
Fuel Delivery Multi-point Electronic Fuel Injection
Starting Method Electric
Ignition TCI / 32-bit Micro-computer Control w/ Direct “Coil-in-Cap” Ignition
Lubrication Wet Sump
Degree of Trim/Tilt -3 to +16/70°
Exhaust Through Propeller, Water-cooled, Labyrinth
Cooling Raw Water, Thermostatically-controlled
Rectifi er/Regulator 3-phase, Water-cooled (standard)
Gear Ratio 2.0:1 (30/15)
Recommended Fuel Unleaded Gasoline (Minimum Pump Octane 89)
Recommended Oil Yamalube® 4-M FC-W® 10W-30 or 20W-40
Oil Capacity 5.9 Quarts (5.6L)
Remote Controls Command Link Digital Electronic Controls**
Command Link Gauges Required (square or round)**
Multiple Outboard Sychronization Auto Synch Throttle Control in Twin and Triple Applications
Variable Trolling Throttle Adjustment +/- 50 RPM Increments (600 ~ 1000 RPM Range) via Command Link
Steering Angle (maximum) 32° From Center (either direction)
Mounting Centers 28.5 inches
Weight (dry) 609 lbs.
Shaft Length 25” (X) / 30” (U)
C.A.R.B. Emissions Rating 3-Star
Limited Warranty 3-Year Pleasure, 3-Year Government, 1-Year Commercial
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** Command Link controls and gauges sold separately to meet specifi c needs.
F250B S ifi ti
F250B featuring Command Link® Controls and GaugesF250B featuring Command Link® Controls and Gauges