Model 12 Intek Horizontal OHV
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Transcript of Model 12 Intek Horizontal OHV
Model 12 Intek Horizontal OHV
Governor Operation Lab #4 Required Tools 8, 10 mm, 3/16, 3/8 socket
Ratchet wrench Extension
Inch pound torque wrench Standard screwdriver Pliers Required Tools
Systematic Approach Technicians need to take their time when
disassembling an engine. This is not a race! Listen for instruction
when to remove the next piece. Do not work ahead! Lay assemblies in
order as they were removed. Put fasteners with removed assemblies,
or loosely back in bolt holes. Lets Begin Close fuel shut-off
valve
Disconnect spark plug ignition lead from spark plug Move throttle
to stop position Safety Issues. Prevent accidental starting of
engine. Remove Air Cleaner Cover and Filter
Use flat bladed screwdriver or 8 mm socket Inspect paper filter for
tears Foam pre-cleaner washable if equipped Replace if necessary
Inspect tabs on filter cover for wear 1) Remove Air Cleaner Cover
And Air Cleaner Cartridge a) Air-Cooled Engines Work In Some Of The
Harshest Conditions. Air Must Filtered To Prevent Dirt From Wearing
Components And Causing Engine Failure b) Some Units May Have A Foam
Pre-Filter. Pre-Filter Promotes Longer Life Of Paper Filter c)
Never Use Compressed Air To Clean A Paper Cartridge. Air Could Make
A Hole In The Paper. Tap Cartridge Gently On A Hard Surface To
Clean. If Very Dirty, Or Soaked With Gas Or Oil, Cartridge Must Be
Replaced. d) Pre-Filter Can Be Washed With Water And Dish Soap.
Ring Out, And Squeeze In Paper Towel To Dry. Do Not Oil
Pre-Cleaner. e) Inspect Air Cleaner Back Plate For Any Signs Of
Dirt Being Ingested Into The Engine f) Inspect Bottom Tabs Of Air
Cleaner Cover For Any Signs Of Wear. Customer May Have Assembled
Cover Incorrectly. If Tabs Were Not Put In Plate, Dirt May Have
Been Ingested. Remove Air Cleaner Backing Plate
Use 8 mm socket Fasteners may have Loctite on threads Disconnect
breather tube at valve cover Inspect gasket on rear of cover for
leaks or tears 1) Remove Air Cleaner Backing Plate a) Plate Serves
As Support For Filters b) A Gasket Is Glued To The Back Of The
Plate To Keep Out Dirt. c) Breather Tube Is Connected To Plate
i)Breather Allows Forced Crankcase Air To Escape. Air Contains Oil
And Fuel Vapors, Which Are Re-Burned Crankcase Must Operate In A
Vacuum To Prevent Oil From Being Pressurized, Which Would Burn Fuel
Valve Check that fuel shut-off valve is closed Safety Issues.
Prevent accidental starting of engine. Disconnect Fuel Line Use
pliers to detach fuel-hose clamp at carburetor Remove line from
carb fitting 1) Disconnect Fuel Hose from carb Move Clamp up. Twist
line off of fitting Remove Speed Control Panel
Use 8 mm socket Fuel valve must be off Throttle lever must be
centered 1) Remove Speed Control Panel a) Fuel Valve Must Be
Orientated In Off Position And Speed Control At Mid-Point To Remove
Panel b) Serves As Decoration, And Place To Attach Decals c) Has A
Hinge On One End Remove Fuel Tank & Fuel Hose
Use 10 mm socket Use pliers to move clamp at carburetor fitting Use
caution for any spilled fuel 1) Remove Fuel Tank And Fuel Hose.
Remove Fuel Hose At Carburetor End By Using A Pliers To Move Clamp.
a) Tank Serves As Reservoir For Fuel b) Cap Has Threads That Allow
Air To Be Vented. Must Use Proper Cap. c) Tank Has Tapered Fill
Area Below Neck To Allow Fuel To Run Off In Event Of Spill d) Tank
Has Baffles Inside To Reduce Fuel From Sloshing e) Customers Should
Leave A 1 Gap Of Air Below Fuel Tank Neck To Avoid Spills f) Fuel
Tanks And Lines Are Now Coated To Prevent Evaporative Fuel
Emissions Identify Governor Parts
Draw governor mechanism and label parts Remove Governor Control
Lever
Use 3/8" wrench Loosen pinch bolt nut, but do not remove. Lift
control lever off of crank 1)Perform Static Governor Adjustment a)
Move throttle to fast speed b) Watch For Rotation Of Throttle
Plate. i)Open To Close c) As Throttle Goes To Wide Open, Watch
Movement Of Governor Lever On Governor Shaft. i) If Movement Of
Lever Is Clockwise, Rotate Shaft Full Clockwise. If Lever Rotates
Counterclockwise, Rotate Shaft Full Counter Clockwise. (1)Governor
Shaft Will Only Rotate About A 1/8th Turn. Remove Governor Springs
and Link
Remove short idle spring from lever and bracket Remove larger
top-no-load spring from lever and tab Remove link and spring from
lever going to carb Disconnect Ground Wire
Push on tab and pull black ignition ground wire free Governor
Control Panel
Use 10 mm socket Remove the 4 black bolts. Lift panel from engine
Reassembly Technicians need to take their time when reassembling an
engine. This is not a race! Listen for instruction when to add the
next piece. Do not work ahead! Fasteners will need the proper
torque values. Special procedures will be explained. Install
Control Bracket
Use 10 mm socket Install 4 black bolts attaching bracket to engine
Install bolt attaching muffler heat shield Verify governor link and
spring are properly positioned. Install Link and Spring
Attach link and spring to carburetor May need to rotate parts to
make attachment Install Governor Springs and Link
Install short idle spring to lever and bracket Install larger
top-no-load spring to lever and tab Attach governor link and
top-no-load spring Install Governor Control Lever
Use 3/8" wrench Install control lever on crank Snug pinch bolt nut,
but do not tighten! 1)Perform Static Governor Adjustment a) Move
throttle to fast speed b) Watch For Rotation Of Throttle Plate.
i)Open To Close c) As Throttle Goes To Wide Open, Watch Movement Of
Governor Lever On Governor Shaft. i) If Movement Of Lever Is
Clockwise, Rotate Shaft Full Clockwise. If Lever Rotates
Counterclockwise, Rotate Shaft Full Counter Clockwise. (1)Governor
Shaft Will Only Rotate About A 1/8th Turn. Install Ground Wire Push
on tab and insert black ignition ground wire Perform Static
Governor Adjustment
Move throttle to fast speed Rotate throttle plate from idle to fast
Watch rotation of governor lever on shaft Turn governor shaft in
same direction Use 3/8" socket Torque to 30 in. lbs 1)Perform
Static Governor Adjustment a) Move throttle to fast speed b) Watch
For Rotation Of Throttle Plate. i)Open To Close c) As Throttle Goes
To Wide Open, Watch Movement Of Governor Lever On Governor Shaft.
i) If Movement Of Lever Is Clockwise, Rotate Shaft Full Clockwise.
If Lever Rotates Counterclockwise, Rotate Shaft Full Counter
Clockwise. (1)Governor Shaft Will Only Rotate About A 1/8th Turn.
Install Fuel Tank and Fuel Hose
Use 10 mm socket Torque to 60 in. lbs Use pliers to attach
fuel-hose clamp at carburetor 1) Install Fuel Tank And Fuel Hose
Install Air Cleaner Back Plate
Use 8 mm socket Torque to 40 in. lbs Attach breather hose 1)
Install Air Cleaner Backing Plate a) Attach breather hose to valve
cover b) Inspect breather hose at backing plate Install Air Filter
and Cover
Install air filter pleats facing out Install pre-filter if equipped
Install air filter cover with tabs in backing cover Use 8 mm socket
or screwdriver Hand tighten 1) Install Air Filter(S) And Cover a)
Air Filter Pleats Face Out b) Tabs For Cover Must Be Correctly
Installed In Tabs On Backing Plate Success! Do you have any extra
parts? Do you have any questions?