Briggs & Stratton Vanguard 05000 User manual

Briggs & Stratton VANGUARD™SINGLE CYLINDER OHV AIR-COOLED ENGINES
1/07
Quality Starts With A
Master Service Technician
272147 - Vanguard Single Cylinder OHV Air-Cooled Engines
272144 - Vanguard Twin Cylinder OHV Air-Cooled Engines
275429 - Vanguard Twin Cylinder OHV Liquid-Cooled Engines
MS-0750 - Vanguard 3-Cylinder OHV Liquid-Cooled Gasoline Engines
MS-1055 - Vanguard 3-Cylinder OHV Liquid-Cooled Diesel Engines
Other Briggs & Stratton
Commercial Power Repair Manuals:
Vanguard Single Cylinder
OHV Air-Cooled Engines
™
POST OFFICE BOX 702
MILWAUKEE, WI 53201 USA
BRIGGSandSTRATTON.COM
©2007 Briggs & Stratton Corporation
BRIGGS&STRATTON
CORPORATION
Part No. 272147-1/07
272147 Vanguard Single Cylinder 4/27/07 1:03 PM Page 1

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SECTION 1- Safety, Maintenance & Adjustments
SECTION 2 -Troubleshooting
SECTION 3 - Engine Disassembly
SECTION 5 - Fuel Systems & Carburetion
SECTION 6 - Governor Systems
SECTION 7- Cylinder Heads & Valves
SECTION 8 - Starters
SECTION 9 - Lubrication Systems
SECTION 10 - Cylinders, Covers & Sumps
SECTION 11 - Crankshafts, Camshafts, Balancing Systems &
Gear Reductions
SECTION 12 - Pistons, Rings & Connecting Rods
SECTION 13 - Final Engine Assembly
SECTION 14 - Engine Specifications & Reference Tables
SECTION 4 - Exhaust Systems

FORWARD
This guide has been written and published by Briggs & Stratton Corporation to aid our dealers' mechanics
and company service personnel when servicingthe products described herein.
It is assumed that these personnel are familiar with the servicing procedures for these products, or like or
similar products, manufactured byBriggs & Stratton Corporation. It is also assumed that theyhave been
trained in the recommended servicing procedures for these products, which includes theuse of mechanics
hand tools and any special tools that might be required.
Proper service and repair is important to the safe, economical and reliable operation of all engines and
engine driven systems. The troubleshooting, testing, service and repair procedures describedin this guide
are effective methods of performing such operations.
We could not possibly know of andadvise the service trade of all conceivable procedures or methods by
which aservice might be performed, nor of every possible hazards and/or results of each procedure or
method. We have not undertaken any such wideevaluation. Therefore, anyone who uses a procedure or
method not described by the manufacturermust first satisfy himself that neither his safety, nor the safety of
the product, will be endangered by the service or operating procedure selected.
All information, illustrations, and specifications contained in this guide are based on the latest production
information available at the time of publication. However, Briggs & Stratton Corporation reserves the right
to change, alter, or otherwise improve the product at any time without prior notice.
Somecomponents orassemblies of the product described inthis guide may not beconsidered repairable.
Disassembly, repair and reassembly of such components maynot be included in this guide.
Copyright © 2008 Briggs & Stratton Corporation
All rights reserved.
No part ofthis material may be reproduced or transmitted, in any form or by any means, electronic or
mechanical, including photocopying, recording or by any information storage and retrieval system, without
prior permission in writing from Briggs & Stratton Corporation.

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SECTION 1 - SAFETY, MAINTENANCE AND ADJUSTMENTS
ENGINE SAFETY ................................................................................. 5
InTheInterest Of Safety ..................................................... 5
The SafetyAlert Symbol....................................................................... 5
Additional Precautions.......................................................................... 8
BRIGGS & STRATTON NUMERICAL IDENTIFICATION SYSTEM..... 9
ENGINE MAINTENANCE................................................................... 10
Fuel and Oil Recommendations.......................................................... 10
Changing Oil.......................................................................................11
MAINTENANCE SCHEDULE............................................................. 12
Air Cleaner Service.............................................................................13
In-Line Fuel Filter Service................................................................... 15
ENGINE ADJUSTMENTS .................................................................. 15
Armature Air Gap Adjustments...........................................................15
Carburetor Idle-Mixture Adjustments..................................................15
Control Adjustments...........................................................................16
Cooling System Maintenance............................................................. 18
Flywheel Brake Adjustments (104700) ............................................... 19
Governor Adjustments........................................................................ 19
Electro-Magnetic Idle Down Adjustments ........................................... 25
Spark Plug Maintenance..................................................................... 26
Valve Clearance Adjustments.............................................................26
Combustion Chamber Deposits......................................................... 27

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ENGINE SAFETY
In The Interest Of Safety
This repair manual contains safety information
that is designed to:
• Make you aware of hazards associated
with engines.
• Inform youof the risk ofinjury associated
with those hazards.
• Tell you how to avoid or reduce the risk
of injury.
•
The Safety Alert Symbol
The safety alert symbol ( ) is used to identify
safety information about hazards that can result
in personal injury.
A signal word (DANGER,WARNING, or CAUTION)
is used with the alert symbol to indicate the
likelihoodand the potential severity of injury. In
addition, a hazard symbol may be used to
represent the type of hazard.
DANGERindicates a hazard which, if
not avoided, will result in death or
serious injury.
WARNING indicates a hazard which, if
not avoided, could result in death or
serious injury.
CAUTION indicates a hazard which, if
not avoided, might result in minor or
moderate injury.
CAUTION:When this signal word is used
without the alert symbol, it indicates a situation
that could result in damage to the engine.
• Prior towork, read and understand the
section(s) of this manual that pertain to
the job. Follow all safety warnings.
• Wear suitable eye protection.
• When servicing engines or equipment,
prevent accidental startingby removing
the spark plug wire from the spark
plug(s).
• Disconnect negative battery terminal if
the application is equipped with an
electric starting system.
• Periodically clean engine. Keep governor
parts free of dirt, grass and other debris
which can affect engine speed and
cooling.
• Always use fresh gasoline. Stale fuelcan
cause gum deposits in the carburetor
and cause leakage, flow restrictions or
other failures.
• Checkfuel lines and fittings frequently for
cracks or leaks and replace if necessary.
WARNING
Before attempting to service this
equipment, read and understand this
manual and the operating instructions of
the equipment it powers.
Failure to FOLLOW instructions could resultin
DEATH, SERIOUS INJURY (including
paralysis) or property damage.
WARNING
Briggs & Stratton does not approve or
authorize the use of these engines on 3-
wheel All Terrain Vehicles (ATV’s),
motorbikes, fun/recreational vehicles for
use in competitive events. Use of these
engines is such applications could result in
property damage, serious injury (including
paralysis), or even death.

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HAZARD SYMBOLS AND
MEANINGS
Explosion Fire Shock
Goggles Chemical Explosive
Burns Pressure
Kick Hot Entanglement
Back Surface
Toxic Read Disconnect
Fumes Spark Plug
WARNING
The engine exhaust from this product
contains chemicals known to the State of
California to cause cancer, birth defects
and other reproductive harm.
WARNING
Gasoline and its vapors are extremely
flammable and explosive.
Fire or explosion can cause severe burns or
death.
When adding fuel:
•Turn engine OFF and let engine cool at
least 2 minutes before filling or refilling.
•Fill fuel tank outdoors or in a well-
ventilated area.
•Do not overfill fuel tank. Fill tankto
approximately 1-1/2 inches below top
of neck to allow for fuel expansion.
•Keep gasoline away from sparks, open
flames, pilot lights, heat and other
ignition sources.
•Check fuel lines, tank, cap and fittings
frequently for cracks or leaks and
replace if necessary.
When starting engine:
•Make sure spark plug, muffler, fuel cap
and air cleaner are in place.
•Do not crank engine with spark plug
removed.
•If fuel spills, wait until it evaporates
before starting engine.
•If engine floods, setchoke to
OPEN/RUN position. Place throttle in
FAST and crank until engine starts.
When operating equipment:
•Do not tip engine or equipment at an
angle which would cause fuel to spill.
•Do not choke carburetor to stop
engine.
When transporting equipment:
•Transport with fuel tank empty or with
fuel shut-off valve set to OFF.
When storing gasoline or equipment with
fuel in tank:
•Store away from furnaces, stoves,
water heaters or other appliances that
have a pilot light or other ignition
source because they can ignite
gasoline vapors.

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DANGER
Running engines produce heat.
Temperature of muffler andsurrounding
areas can exceed 150°F (65°C). Severe
burns can occur on contact.
•Allow muffler,engine cylinder fins and
radiator to cool before touching.
•Remove accumulated combustibles
from muffler area and cylinder area.
•Install and maintain in working order a
spark arrestor before using equipment
on forest-covered, brush-covered
unimproved land. The state of
California requires this (Section 4442
of thePublic Resources Code). Other
states may have similar laws. Federal
laws apply on federal land.
WARNING
Unintentional sparking can result in fire or
electric shock.
Unintentional start-up can result in
entanglement, traumatic amputation or
severe lacerations.
Before performing adjustments or repairs:
•Disconnect sparkplug wire and keep it
away from spark plug.
•Disconnect negative (-) battery
terminal.
When testing for spark:
•Use approved spark plug tester.
•Do not check for spark with spark plug
removed.
DANGER
Engines give off carbon monoxide, an
odorless, colorless, poison gas.
Breathing carbon monoxide can cause
nausea, fainting or death.
•Start and run engine outdoors.
•Do not start or run engine in an
enclosed area, even if doors and
windows are open.
DANGER
Starting engine creates sparking. Sparking
can ignite nearby flammable gases.
Explosion and fire could result.
•If there is a natural or LP gas leakage
in the area, do not start engine.
•Do not use pressurized starting fluids
because vapors are flammable.
DANGER
Rotating parts cancontact or entangle
hands, feet, hair, clothing or accessories.
Traumatic amputation or severe lacerations
can result.
•Operate equipment with guards in
place.
•Keep hands and feet away from
rotating parts.
•Tie up long hair and remove jewelry.
•Do not wear loose-fitting clothing,
dangling drawstrings or items that
could become entangled in the
equipment.

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WARNING
Kerosene and its vapors are extremely
flammable and should be handled with the
same precautions as gasoline.
DANGER
Broken bones, fractures, bruises or sprains
could result.
•Remove all external equipment/engine
loads before starting engine.
•Direct-coupled equipment components
such as, but not limited to blades,
impellers, pulleys and sprockets must
be securely attached.
WARNING
All fuel components should be in good
condition and properly maintained.
•Repairs should only be made with
factory approved parts.
•Repair work should be done by a
qualified technician.
•Flexible supply lines should be
checked regularly to make sure they
are in good condition.
WARNING
Charging batteries produces hydrogen gas.
Do not store or charge andbattery near an
open flame or devices that utilize a pilot
light or can create a spark.

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BRIGGS & STRATTON NUMERICAL
IDENTIFICATION SYSTEM

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ENGINE MAINTENANCE
Fuel and Oil Recommendations
Fuel
Fuel must meet these requirements:
• Use clean, fresh unleaded gasoline.
• Aminimum of 87 octane / 87 AKI (91
RON). For high altitude use, see “High
Altitude” below.
• Gasoline with up to 10% ethanol
(gasohol) or up to 15% MTBE (Methyl
TertiaryButyl Either) is acceptable.
CAUTION:Do not use unapproved gasoline
such as E85. Do not mix in gasoline or modify
the engine to run on alternate fuels. This will
damage the engine components and void the
engine warranty.
To protect the fuel system from gum formation,
mix a fuel stabilizer into the gasoline see
“Storage” below. All fuel is not the same.
If starting or performance problems occur:
• Change fuel providers or change brands.
High Altitude
At altitudes over 5000 feet (1524 meters), a
minimum of 85 octane / 85 AKI (89 RON)
gasoline is acceptable. To remain emissions
compliant, high altitude adjustment is required.
Operation without this adjustment willcause
decreased performance, increased fuel
consumption and increased emissions.
At altitudes below 2500 feet (762 meters), high
altitude adjustment is not recommended.
Storage
Fuel can become stale when stored over 30
days. Stale fuel causes acid and gumdeposits to
form in the fuel system and/or on essential
carburetor parts. To keep fuel fresh, use Briggs
& Stratton FRESH START™ (#5041) fuel
stabilizer, available asa liquid additive or a drip
concentrate cartridge.
There is no need to drain gasoline from the
engine before storage if fuel stabilizer is added
according to instructions. Run the engine for two
minutes to circulate the stabilizer throughout the
system. The engine and fuel can then be stored
for up to 24 months.
If gasoline has not been treated with a fuel
stabilizer prior to storage, it must be drainedfrom
the engine into an approved container. Run the
engine until it stops from lack of fuel. The use of
a fuel stabilizer in the storage container is
recommendedto maintain freshness.
CAUTION:Some fuel, called “oxygenated” or
“reformulated” gasoline, is gasolineblended with
alcohol or ether. Excessive amounts of these
blends can damage thefuel system or cause
performance problems. If any undesirable
operating symptoms occur, use gasoline with a
lower percentage of alcohol or ether.
Oil
Oil has four purposes:
• It cools
• It cleans
• It seals
• It lubricates
During normal operation, small particles of metal
from the cylinder walls, pistons, bearings as well
as normal combustion deposits will gradually
contaminate the oil. Dust particles from the air
also contaminate the oil. This forms an abrasive
mixture that can cause wear to the internal parts
of the engine if the oil is not changed regularly.
Fresh oilalso assists in cooling. Old oil gradually
becomes thick and loses its cooling ability as
well as its lubricating qualities.
Use a high quality detergent oil classified “For
ServiceSF, SG, SH, SJ”or higher. Use synthetic
oil such as Briggs & Stratton (#100074) or
equivalent. If synthetic oil isnot available, Briggs
& Stratton non-synthetic 30 weight oil (#100005 or
#100028) is an acceptable substitute. Do not use
special additives with recommended oils.
Do not mix oil with gasoline.

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Fig. 1
CAUTION:The use of non-synthetic multi-
viscosity oils (5W-30, 10W-30, etc.) in
temperatures above 40°F(4°C) will result in
higher than normal oil consumption. When using
a multi-viscosity oil, checkoil level more
frequently. SAE 30 oil, if used below 40°F (4°C),
will result in hard starting and possible engine
bore damage due to inadequate lubrication.
NOTE:The use of synthetic oils does not alter
the oil change intervals.
ChangingOil
Change oil andfilter (if equipped) after the first 5-
8 hours. Thereafter, change oil every 100 hours
of operation.
Change oil more often if engineis operated in
dirty or dusty conditions or if engine is operated
under heavy loads and/or in high ambient air
temperatures.
Fig. 2
1. Park equipment so engine is level.
2. Remove oil drain plug ([A] Fig. 2).
• Drain oil while engine is still warm.
3. Install drain plug. Torque to value listed.
SEE SECTION 14- ENGINE SPECIFICATIONS.
4. Remove oil filter ([C]Fig. 3), if equipped.
• Clean surface of filter mounting adaptor
([D] Fig. 3).
• Apply light coat of clean engine oil to new
filter gasket.
Fig. 3
5. Screw filter on by hand until gasket
contacts oil filter mounting adapter. Then
tighten an additional 1/2 to 3/4 turn.
6. Clean area around oil fill cap and tube ([B]
Fig. 2).
7. Fill with the correct amount of new oil.
SEE SECTION 14- ENGINE SPECIFICATIONS.
Start engine and run at idle for a minute or so.
8. Shut engine off and wait for oil to settle
back into the cylinder.
9. Check dipstick. If necessary, add more oil
slowly to bring oil level to FULL mark ([A]
Fig. 4) on dipstick.
Fig. 4
CAUTION:Do not overfill. Overfilling can cause
seals to fail or overheating due to oil foaming.
10. Replace oil fill cap and dipstick.
11. Start and run engine. Check for oil leaks.

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MAINTENANCE SCHEDULE
WARNING
Unintentional sparking can result in fire or
electric shock.
Unintentional start-up can result in
entanglement, traumatic amputation or
severe lacerations.
Before performing adjustments or repairs:
•Disconnect spark plug(s).
•Disconnect negative (-) battery cable.
•Use only the correct tools.

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Air Cleaner Service
CAUTION:Never operate an engine with the air
cleaner assembly or air cleaner cartridge
removed.
A correctly serviced air cleaner protects internal
engine parts from airbornedirt anddust particles.
If air cleaner instructions are not followed,
particles that should be collected in the air
cleaner will pass into theengine. These particles
are abrasive and will cause the piston rings and
cylinder bore to wear more quickly. As the rings
and bore wear, the particles enter the cylinder
and contaminate the oil. This forms an abrasive
mixture that will erode and damage internal
engine components.
Prevent dirt and dust from enteringthe engine
through improper sealing.
• Replace worn or damaged air cleaner
gaskets and seals.
• Replace air cleaner mounting brackets if
bent or damaged.
Cleaning and Replacing Air Filters
Refer to Figures 5-10 that show the air cleaner
for your engine.
1. Loosen screws or knobs (A) holding air
cleaner cover in place and remove cover
(B).
2. Carefully clean debris from the base and
cover, then remove air filter element
retaining nut (C) (if equipped).
3. Lift off filter element (D) with the pre-
cleaner (E) (if so equipped).
4. Wash pre-cleaner in warm soapy water.
5. Rinse and drythoroughly.
6. Saturate pre-cleaner infresh clean engine
oil and squeeze out excess. (Do not oil
pre-cleaners labeled DO NOT OIL.)
Replace pre-cleaner if no longer
serviceable.
7. Gently tap filter element ona solid surface
to dislodge debris. Replace filter element
if very dirty or damaged.
8. Reinstall pre-cleaner, element, retaining
nut(s), cover and screws.
Remove Air Cleaner Assembly
1. Follow steps 1 through 3 listed previously.
2. Remove screws and nuts holding air
cleaner base (F) to carburetor and/or
control bracket.
3. Pull air cleaner base awayfrom
carburetor.
4. Disconnect breather tube (G) from air
cleaner base or rocker cover.
Fig. 5
Fig. 6
CAUTION:Do not use pressurized air or
solvents to clean filter elements. Pressurized air
can damage elements and solvents might
dissolve filter mesh.

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Fig. 7
Fig. 8
Fig. 9
Fig. 10

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Install Air Cleaner Assembly
1. Connect breather tube to back side of air
cleaner base.
2. Position base (with new gasket) on
carburetor.
NOTE: Use new screws with sealant band or
place non-hardening sealant on mounting
screws.
3. Start screws into carburetor and tighten
securely.
4. Install air cleaner element and/or pre-
cleaner.
In-Line Fuel Filter Service
Replace in-line fuel filter every yearor 100 hours
of operation, whichever occurs first. Replace the
filter if dirt or water are present. Refer to the
correct illustrated parts list (IPL) that applies to
your engine for the correct filter.
Fig. 11
ENGINE ADJUSTMENTS
Armature Air Gap Adjustments
1. Rotate flywheel until magnets are away
from armature.
2. Loosen both armature mounting screws
(A) and pull armature away from flywheel.
3. Snug one screw.
4. Insert the proper thickness gauge ([B] Fig.
11) between armature and flywheel.
SEE SECTION 14- ENGINE SPECIFICATIONS.
5. Turn flywheel. Loosenscrews and allow
the magnets to pull armature against
thickness gauge ([B] Fig. 11).
6. Tighten screws to listed values. See on
page 255.
Carburetor Idle-Mixture Adjustments
Initial Mixture Adjustment
Refer to the figure that shows your engine.
1. Turn the idle mixture screw ([A] Fig. 12) in
until you feel it just make contact with the
seat.
2. Back the idle mixture screw out 1-1/4
turns.
3. Start the engine and let run at half throttle
for 5 minutes to bringit up to operating
temperature.
Adjusting Idle Mixture RPM
Refer to the figure that shows your engine.
NOTE: Parts removed for clarity.
1. Move throttle to SLOW.
2. While holding the speed control lever (B)
against the idle speed screw, adjust the
idle speed screw (C) to obtain 1750RPM,
except as noted for the following models:
• Model 104700: 1500RPM
• Models 161400, 260700, 261700: 1200
RPM
• Models 085400, 086400, 115400,
117400, 118400, 185400: 1300 RPM
3. Turn idle mixture screw (A) clockwise
(CW) until the engine just begins to slow.
4. Turnidle mixture screw counterclockwise
(CCW) until the engine just begins to
slow.

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5. Turn idle mixture screw back to midpoint
and release the speed control lever.
6. Install limiter cap (if equipped) using
knockout pin (#19135).
Fig. 12
NOTE: (138400) Does not have an idle
adjustment screw.
Fig. 13
Fig. 14
Fig. 15
7. Move speed control from SLOW to FAST.
If the engine does not accelerate smoothly:
• Adjust idle mixture screw 1/8 turn CCW.
8. Check idle RPM and readjust to
specifications, if required.
Control Adjustments
Throttle Control
(050000, 085400, 086400, 115400, 117400,
118400, 138400, 185400, 235400, 245400,
28Q700)
The throttle controls on these units are
interconnected withthe governorlinkage system.
SEE SECTION 6- GOVERNOR SYSTEMS.

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Throttle Control
(161400, 104700, 260700, 261700)
Refer to Figures 16 and 17 that show your
engine.
1. Loosen casing clamp screw (A).
2. Move throttle to FA ST.
3. Move casing in direction of arrow (B) until
casing stops.
4. Tighten casing clamp screw.
Fig. 16
Fig. 17
Choke Control
(050000, 085400, 086400, 115400, 117400,
118400, 138400, 185400, 235400, 245400)
The choke on these models has a separate
manual control.
Ensure that the choke valve is completelyopen
or closed when the control is moved through its
range of motion.
Choke-A-Matic®
(104700, 161400, 260700, 261700,
28Q700)
Choke control cables are often provided by the
original equipment manufacturer. Please refer to
the information provided by the OEM when this
general description is not sufficient to adjust the
choke control.
1. Loosen chokecontrol casing clamp screw
on engine control panel or governor
control bracket.
2. Move choke control lever or knob to
CHOKE.
3. Move choke control casing in the direction
that completely closes the choke valve.
4. Tighten the casing clamp screw.
Choke-A-Matic® Adjustments (161400)
Refer to the figure that shows your engine.
1. Move throttle control to FAST. The end of
the choke link should contact the end of
the choke lever slot. To adjust, expand or
contract loop (A) in the choke link.
2. Move equipment control lever to CHOKE.
The choke plate must be closed. Readjust
as required.
Fig. 18

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Fig. 19
Fig. 20
Cooling System Maintenance
CAUTION:Keep engine parts clean to reduce
the risk of overheating and ignition of
accumulated debris.
Do not use water to clean engine. Water could
contaminate fuel system and short out electrical
systems. Low pressure (5-10 psi.) compressed
air may be used.
Grass particles, chaff, or dirt can clog the air
cooling system, especially after prolonged
service in very dusty conditions or when cutting
dry grass. Continued operation with a clogged
cooling system can cause severe overheating
and possible engine damage.
Clean the static screen ([A] Fig. 21)
.
Fig. 21
Clean the ducting (B) and cylinder fins ([C] Fig.
22), yearly orevery 100 hours of operation.Clean
more often when dust or airborne debris is
present.
Fig. 22

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Flywheel Brake Adjustments
(104700)
The flywheel brake system is part of a safety
control mechanism required by some equipment
applications. When the operator releases an
equipment control (bail) with the engine running
at theFAST selection, the flywheel brake must
stop the engine within 3 seconds.
Using torque wrench#19393 and asocket to fit
the flywheel nut, turnthe flywheel clockwise
(CW) with the brake engaged. Turning at a
steady rate, the torque reading should be the
listed value. SEE SECTION 14- ENGINE
SPECIFICATIONS.
If the reading is low:
• Check the thickness of the brake pad.
• Replace brake lever and pad if the brake
pad thickness is less than0.090 in.
(2.29mm).
If the pad is within specification:
• Adjust the control cable casing anchor to
positionthe pad closer to the flywheel
when the safety control is in RUN.
If correct adjustment cannot be made:
• Replace the brake assembly.
Governor Adjustments
CAUTION:Complete the governor static
adjustment before starting or running engine.
Incorrect adjustment could result in engine over-
speeding causing engine damage.
NOTE:(161432-0080-01,161430-0199-01,
185430-0099-01, 185430-0140-01, 185430-
0299-01)These engine models are equipped
with governors supplied byequipment
manufacturers. Consult with the OEM for service
procedures on these model/types.
A complete governor system adjustment
includes the following:
1. A static governor adjustment.
2. Engine warm-up.
3. Idle and/or governed idle adjustment.
4. Top no-load RPM adjustment.
Install all linkages and springs before performing
staticgovernor adjustments. Refer to the
illustration that matches the governor system on
your engine.
NOTE:(050000, 085400, 086400, 115400,
117400, 118400, 138400, 185400, 235400,
245400)These models have left hand threads
on the governor lever nut.
Static Governor Adjustment
(050000, 085400, 086400, 115400, 117400,
118400, 138400, 185400, 235400, 245400)
1. Loosen lock nut (A)holding governorlever
(B) to governor crank ([C] Fig. 23).
2. Rotate throttle plate linkage from IDLE to
WOT(Wide Open Throttle). Note direction
of rotation of the governor lever (B)
attached to the throttle linkage ([D]
Fig.23).
3. Place and hold the throttle plate linkage in
FASTposition.
WARNING
Unintentional sparking can result in fire or
electric shock.
Unintentional start-up can result in
entanglement, traumatic amputation or
severe lacerations.
Before performing adjustments or repairs:
•Disconnect spark plug(s).
•Disconnect negative (-) battery cable.
•Use only the correct tools.
DANGER
Engines give off carbon monoxide, an
odorless, colorless, poison gas.
Breathing carbon monoxide can cause
nausea, fainting ordeath.
•Start and run engine outdoors.
•Do not start or run engine in an
enclosed area, even if doorsand
windows areopen.