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Model SeriesCovered in
This Manual
90000100000
Operating & MaintenancInstruction
Model Type Code
Month Day YeNote: General Model Series numbers noted above are inclusive of the specific modelnumber found on your engine. To get replacement parts or technical assistance inthe future, write your engine Model, Type, Code and date of purchase here.
TABLE OF CONTENTSSafety 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Engine Information 6. . . . . . . . . . . . . . . . . . . . . . . .Oil 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fuel 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Starting Information 9. . . . . . . . . . . . . . . . . . . . . . .Starting and Stopping 10. . . . . . . . . . . . . . . . . . . . .Maintenance 11-13. . . . . . . . . . . . . . . . . . . . . . . . .Adjustments 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .Parts and Service & Storage 15-16. . . . . . . . . . . .Warranty Information 17. . . . . . . . . . . . . . . . . . . . .
WARNING
Briggs & Stratton does not approve or authorize the usethese engines on 3-wheel All Terrain Vehicles (ATVs), mo
bikes, aircraft products or vehicles intended for usecompetitive events. Use of these engines in such applicatiocould result in property damage, serious injury (includparalysis), or even death.
Need assistance? Go to www.briggsandstratton.comfor detailed information regarding
Briggs & Stratton engines.
Or call, 1-800-233-3723, (U.S.A. and Canada)to hear a menu of pre-recorded messagesoffering engine maintenance information.
PRINTED IN U.S.A. Copyright 2001 by Briggs & Stratton Corporation FORM NO. 275224-
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The Power That Works For You.
Thank you for selecting a Briggs & Stratton engine to power your equipment.
Briggs & Stratton is committed to producing a line of engines which will make your lifes chores easier toperform. We have, at the same time, improved the design of our engines so they are environmentallyfriendly. Since 1995, we have succeeded in reducing smog-forming exhaust emissions from our enginesby 70%. Briggs & Strattons efforts have not stopped there. We are also committed to designing andintroducing even cleaner engines in the future, while maintaining our reputation for excellent utility andvalue.
Briggs & Strattons environmental awareness has resulted in the engineering of the Smart-Fill gascan, featuring a spill resistant nozzle which opens only when fully inserted into the gas tank, and whichshuts off automatically when the tank is full. Because refueling spills can harm the environment, theSmart-Fillcontainer helps preserve a stronger ecosystem by reducing this source of pollution.
We hope you will enjoy your new engine and equipment. We welcome you to our worldwide family ofBriggs & Stratton engine users.
Best Wishes Always,
The Employees of Briggs & Stratton Corporation
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BEFORE OPERATING ENGINE
Read entire Operating & Maintenance Instructions ANDthe instructions for the equipment this engine powers.*
Failure to follow instructions could result in serious injuryor death.
THE OPERATING & MAINTENANCE INSTRUCTIONSCONTAIN SAFETY INFORMATION TO
Make you aware of hazards associated with engines
Inform you of the risk of injury associated with those hazards, and
Tell you how to avoid or reduce the risk of injury.
27
The safety alert symbol ( )is used to identify safetyinformation about hazards that can result in personal injury.
A signal word (DANGER, WARNING, or CAUTION) isused with the alert symbol to indicate the likelihood and thepotential severity of injury. In addition, a hazard symbolmay be used to represent the type of hazard.
DANGER indicates a hazard which, if notavoided, will result in death or serious injury.
WARNING indicates a hazard which, if notavoided, could result in death or serious injury.
CAUTION indicates a hazard which, if notavoided, might result in minor or moderateinjury.
CAUTION,when used withoutthe alert symbol,indicates a situation that could result in damageto the engine.
HAZARD SYMBOLS AND MEANINGS
Explosion
Toxic Fumes
Moving Parts
Shock
Hot Surface
Kickback
Fire
WARNINGThe engine exhaust from this prod-uct contains chemicals known to theState of California to cause cancer,birth defects, or other reproductiveharm.
* Briggs & Stratton does not necessarily know what equipment this engine will power. For that reason, you should careread and understand the operating instructions for the equipment on which your engine is placed.
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SAFETY
WARNING
Gasoline and its vapors are extremely flammableand explosive.
Fire or explosion can cause severe burns or death.
WHEN ADDING FUEL
Turn engine OFF and let engine cool at least 2minutes before removing gas cap.
Fill fuel tank outdoors or in well-ventilated area.
Do not overfill fuel tank. Fill tank to approximately 1inch below lowest portion of neck to allow for fuelexpansion.
Keep gasoline away from sparks, open flames,pilot lights, heat, and other ignition sources.
Check fuel lines, tank, cap, and fittings frequentlyfor cracks or leaks. Replace if necessary.
WHEN STARTING ENGINE
Make sure spark plug, muffler, fuel cap and aircleaner are in place.
Do not crank engine with spark plug removed.
If fuel spills, wait until it evaporates before startingengine.
If engine floods, set choke to OPEN/RUN position,
place throttle in FAST and crank until engine starts.
WHEN OPERATING EQUIPMENT
Do not tip engine or equipment at angle whichcauses gasoline to spill.
Do not choke carburetor to stop engine.
WHEN TRANSPORTING EQUIPMENT
Transport with fuel tank EMPTY or with fuel shut-offvalve OFF.
WHEN STORING GASOLINE OR EQUIPMENTWITH FUEL IN TANK
Store away from furnaces, stoves, water heaters orother appliances that have pilot light or otherignition source because they can ignite gasolinevapors.
WARNING
Unintentional sparking can result in fire or electricshock.
Unintentional start-up can result in entanglementtraumatic amputation, or laceration.
BEFORE PERFORMING ADJUSTMENTS OREPAIRS
Disconnect spark plug wire and keep it away frospark plug.
Disconnect battery at negative terminal (on
engines with electric start).
WHEN TESTING FOR SPARK
Use approved spark plug tester.
Do not check for spark with spark plug removed
WARNING
Starting engine creates sparking.
Sparking can ignite nearby flammable gases.
Explosion and fire could result.
If there is natural or LP gas leakage in area, do nstart engine.
Do not use pressurized starting fluids becauvapors are flammable.
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SAFETY
WARNING
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 enclosed area, even ifdoors or windows are open.
WARNING
Running engines produce heat. Engine parts,especially muffler, become extremely hot.
Severe thermal burns can occur on contact.
Combustible debris, such as leaves, grass, brush,etc. can catch fire.
Allow muffler, engine cylinder and fins to coolbefore touching.
Remove accumulated combustibles from mufflerarea and cylinder area.
Install and maintain in working order a sparkarrester before using equipment on forest-covered,grass-covered, brush-covered unimproved land.The state of California requires this (Section 4442of the California Public Resources Code). Otherstates may have similar laws. Federal laws applyon federal land.
WARNING
Rotating parts can contact or entangle hands, feethair, clothing, or accessories.
Traumatic amputation or severe laceration caresult.
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, danglindrawstrings or items that could become caught.
WARNING
Rapid retraction of starter cord (kickback) will pull handand arm toward engine faster than you can let go.
Broken bones, fractures, bruises or sprains couldresult.
When starting engine, pull cord slowly unresistance is felt, then pull rapidly.
Remove all external equipment/engine loadbefore starting engine.
Direct coupled equipment components such abut not limited to, blades, impellors, pulleysprockets, etc., must be securely attached.
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ENGINE PARTS
1. Carburetor2. Air cleaner3. Rope handle4. Finger guard
5. Oil fill/Dipstick6. Engine Model Type Code
xxxxx xxxx xx xxxxxxxx7. Muffler/(Muffler guard, if equipped)/
(Spark arrester, if equipped)
8. Spark plug wire
9. Governor control lever10. Primer bulb11. Fuel tank12. Fuel fill13. Flywheel
43
6
7
5
1
2
119
12
10
13
GENERAL INFORMATION
ENGINE MODELThis is a single cylinder, L-head, air-cooled engine. It is alow emissions engine.
MODEL SERIES 90000
Bore 2-9/16 in. (65.09 mm). . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 1-3/4 in. (44.45 mm). . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 9.02 cu. in. (147.8 cc). . . . . . . . . . . . . . . . . .
MODEL SERIES 100000
Bore 2-9/16 in. (65.09 mm). . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 1-7/8 in. (47.63 mm). . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 9.67 cu. in. (158.6 cc). . . . . . . . . . . . . . . . . .
Note: For practical operation, the horsepower loadingshould not exceed 85% of rated horsepower. Engine powerwill decrease 3-1/2% for each 1,000 feet (300 meters)above sea level and 1% for each 10F (5.6C) above 77F(25C). It will operate satisfactorily at an angle up to 15.
TUNE-UP SPECIFICATIONS
Armature air gap 0.0060.010 in. (0.150.25 mm). . .
Spark plug gap 0.030 in. (0.76 mm). . . . . . . . . . . . . . . . . .
Valve clearance with valve springs installed and piston 1/4 in.(6 mm) past top dead center (check when engine is cold).See Repair Manual P/N 270962.
Intake 0.0050.007 in. (0.130.18 mm). . . . . . . . . . . . .
Exhaust 0.0070.009 in. (0.180.23 mm). . . . . . . . . . .
THE INTERNATIONAL SYMBOLS USEDON THE ENGINE OR
IN THIS MANUAL INCLUDE:
On Off
Fuel Shutoff
Read OwnersManual
Stop
Fuel
Choke
Safety Alert
Oil
Primer
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OIL
275224
CAUTION:This engine is shipped from Briggs &Stratton without oil. Check oil level before startingengine. If you start the engine without oil, the enginewill be damaged beyond repair and will not becovered under warranty.
OIL CAPACITY
The engine holds approximately 5/8 qt (20 ozs; 0.6 liter).
TYPE OF OIL TO USE
Use a high quality detergent oil classified For ServiceSF, SG, SH, SJor higher, such as Briggs & Stratton30W, Part Number 100005 (20 oz) or 100028 (48 oz).
Do not use special additives.
Choose a viscosity according to the table opposite.
Note: Synthetic oil meeting ILSAC GF-2, APIcertification mark and API service symbol(shown at left) with SJ/CF ENERGY CON-
SERVINGor higher, is an acceptable oil at alltemperatures. Use of synthetic oil does notalter required oil change intervals.
F -20 0 20 40 60 80 100
C -30 -20 -10 0 10 20 30 40
STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANG
*
**
32
* CAUTION: Air cooled engines run hotter tautomotive engines. The use of non-synthmulti-viscosity oils (5W-30, 10W-30, etc.) temperatures above 40 F (4 C) will result in higthan normal oil consumption. When usingmulti-viscosity oil, check oil level more frequently
** CAUTION: SAE 30 oil, if used below 40 F (4 C),result in hard starting and possible engine b
damage due to inadequate lubrication.
SAE Viscosity Grades
CHECKING AND ADDING OIL
Check oil level beforestarting the engine.
Check level daily, or after every eight (8) hours.
Keep oil level at FULL.
CAUTION: Do not overfill. Overfilling with oil may caSmoking,Hard starting,Spark plug fouling, orOil saturation of air filter.
[1] Place engine level andclean around oil fill area.
[2] Remove dipstick and wipe clean with cloth.
[3] Replace and tighten dipstick. Remove andcheck oil level. Oil level should be at FULLline on dipstick.
[4] If needed, add oil slowrecheck. Do not over fill.
[5] Replace and tighten dipst
High Oil Fill(if equipped)
[1] Place engine level andclean around oil fill area.
[2] Remove dipstick and wipe clean with cloth.
[3] Replace and tighten dipstick. Remove andcheck oil level. Oil level should be at FULLline on dipstick.
[4] If needed, add oil slowrecheck. Do not over fill.
[5] Replace and tighten dipst
Low Oil Fill(if equipped)
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FUEL
TYPE OF FUEL TO USE
Use clean, fresh, regular unleaded gasoline with aminimum of 77 octane. Fresh fuel prevents gum fromforming in the fuel system or on essential carburetor parts.Purchase fuel in quantity that can be used within 30 days.
Do not use gasoline which contains Methanol.
Do not mix oil with gasoline.
For engine protection use Briggs & Stratton GasolineAdditive available from your Authorized Briggs &Stratton Dealer (P/N 5041 or single use pouch).
This engine is certified to operate on gasoline. ExhaustEmission Control System: EM (Engine Modifications).
CAUTION: Some fuels, called oxygenated orreformulated gasoline, are gasoline blended withalcohols or ethers. Excessive amounts of these
blends can damage the fuel system or causeperformance problems. If any undesirable oper-ating symptoms occur, use gasoline with a lowerpercentage of alcohol or ether.
ADDING FUEL
Fuel Fill
WARNING
[1] Remove cap. Fill tank to approximately 1-1/2inches below top of neck to allow for fueexpansion. Be careful not to overfill.Briggs & Stratton Smart-fillfuel can fills to thecorrect level and automatically shuts off, reducing spills and emissions.
[2] Replace cap before starting.
Turn engine OFF and let engine cool at least 2minutes before removing gas cap.
Fill fuel tank outdoors or in well-ventilated area.
Keep gasoline away from sparks, open flames,pilot lights, heat, and other ignition sources.
If fuel spills, wait until it evaporates beforestarting engine.
Neck
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STARTING
Do not use pressurized starting fluids.
Vapors are flammable.
Make sure spark plug, muffler, fuel cap and aircleaner are in place.
Do not crank engine with spark plug removed.
If fuel spills, wait until it evaporates beforestarting engine.
If engine floods, set choke to OPEN/RUNposition, place throttle in FAST and crank untilengine starts.
WARNING
Store and fuelequipment in levelposition.
Use fresh fuel. (SeeFuel.)
Use correct type ofoil for expectedstarting tempera-ture. (See Oil.)
Remove externalequipment/engineloads. (See equip-ment operatinginstructions.)
Start lawn moweron hard surface orover previously cutgrass.
Periodically removegrass buildup undermower deck. (SeeMaintenance.)
After engine hasstarted, let it warmup several secondsto several minutes,depending on out-
side temperature.For maximum per-
formance and life,operate engine withthrottle in FAST.
STARTING AND OPERATING TIPS
If you are starting your engine for theFIRST time, read the informationoutlined under Starting A New Engine.
CAUTION:This engine is shipped from Briggs & Strattonwithout oil. Check oil level before starting engineIf you start the engine without oil, the engine will bedamaged beyond repair and will not be coveredunder warranty.
CAUTION:
Smoking,
Hard starting,
Spark plug fouling,
Oil saturation of air filter.
If engine is tipped to transport equipment, removgrass, drain oil, etc., keep spark plug side o
engine up. Tipping engine with spark plug dowmay cause:
KEEP SPARK PLUG UP
[1] Move throttle to FAST.(if equipped)
[2] Firmly push primer bulb 5times.
Primerbulb
Add oil and fuel as instructed in this manual prior toattempting to start engine. (See Oil andFuel)
Continue at step [4] under TO START ENGINE.
STARTING A NEW ENGINE
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STARTING AND STOPPING
REWIND (MANUAL) STARTERTO START ENGINEWhen starting engine thereafter, push primer bulb firmly 3 times as illustrated below and pull starter rope as instructed be
[1] Check oil level (see p. 8).
[2] Move throttle(if equipped) to FAST.
[3] Firmly push primerbulb 3 times.
Primerbulb
[4] Close safety brake handle on lawn mowersand any other equipment with this feature.
[5] Grasp rope handle. Pull slowly until resistance
felt, then pull rapidly to start engine and avokickback.
[6] Let engine warm up.Operate engine withthrottle in FAST.
WARNING When starting enginepull cord slowly untresistance is felt, thepull rapidly.
TO STOP ENGINE
[1] Move throttle (if equipped)to SLOW, then
[2] Release safety brake cotrol handle.
CAUTION:Do not stop engine bymoving choke controlto CHOKE. Backfire,fire or engine damagecould occur.
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MAINTENANC
MAINTENANCERegular maintenance will improve the performance andextend the life of the engine. See any Authorized Briggs &Stratton Dealer for service. Use only genuine Briggs &Stratton parts. Other parts may not perform as well,may damage the engine, and may result in injury.In
addition, use of other parts may void your warranty.
EMISSION CONTROLMaintenance, replacement or repair of the emisscontrol devices and systems may be performed bynonroad engine repair establishment or individHowever, to obtain no charge repairs under the termsprovisions of the Briggs & Stratton warranty statement
service or emission control part repair or replacement mbe performed by a factory authorized dealer.
Follow the instructions and schedules indicated below.
Task
Perform task at hourlyor calendar interval,
whichever comes first.
Every8Hours
orDaily
25Hoursor
EverySeason
50Hoursor
EverySeason
100Hoursor
EverySeason
100-300Hours
Check Oil Level
Change Oil *
Service Oil-Foamaircleaner element
**
Inspect spark arrester(if equipped)
Replace spark plug
Clean cooling system **
Clean combustionchamber
* Change oil after first 5 to 8 hours of use, then every50 hours or every season. Change oil every 25 hourswhen operating the engine under heavy load or in hightemperatures.
** Clean more often under dusty conditions or whenairborne debris is present. Replace air cleaner parts, ifvery dirty.
CAUTION: Used oil is a hazardous wasteproduct. Dispose of used oil properly. Do notdiscard with household waste. Check with yourlocal authorities, service center, or dealer for safedisposal/recycling facilities.
CAUTION
Smoking,
Hard starting,
Spark plug fouling,
Oil saturation of air filter.
If engine is tipped to transport equipment, remove grass,drain oil, etc., keep spark plug side of engine up.Tipping engine with spark plug down may cause:
KEEP SPARK PLUG UP
CHANGING OIL
SPARKPLUG
SIDE OIL DRAIN(IF EQUIPPED)
TOP OIL DRAIN
[1] Run engine until it ruout of fuel. Otherwisfuel can leak out, creata fire/explosion hazawhen you tip engine
Step 4.[2] Disconnect spark plwire and keep it awfrom spark plug.
[3] With engine OFF but still warm remove dipstic
[4] Top oil drain, keep spark plug side up. Bottom or soil drain (if equipped), keep engine level. Drain oil inappropriate receptacle.
Note:Top oil drain is recommended method, howevoil can drain from side (if equipped) or bottom as show
[5] Place engine level. Add about 5/8 qu(20 ounces: 0.6 liter) new oil. Fill to FULL line
dipstick. Do not overfill. Replace dipstick.
WARNING
BOTTOM OIL DRAIN
RATCHAND
EXTENS
CUTTINGBLADE
OILDRAIPLUG
DRAINPLUGS
PIPE3/
SQU
Low Oil Fill(if equipped)
High Oil Fill(if equipped)
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MAINTENANCE
AIR CLEANER
All engines have an Oil-Foamair cleaner.
Oil-FoamAir Cleaner
SCREW CUP
BODY
ASSEMBLE ELEMENTSO LIP EXTENDSOVER EDGE OF
AIR CLEANER BODY
LIP WILL FORMPROTECTIVE SEAL
WHEN COVERIS ASSEMBLED
LIP
REMOVING AND RE-INSTALLING AIR CLEANER
[1] Remove screw as illustrated.
[2] Carefully remove air cleaner to prevent dirt from fallinginto carburetor.
[3] Take air cleaner apart and clean all parts.
[4] Re-install clean and oiled (or new and oiled) Oil-Foamelement and cup in air cleaner body. Lip ofelement must extend over edge of body.
[5] Install air cleaner on carburetor.
[6] Tighten screw.
CLEANING OIL-FOAMELEMENT
To clean Oil-Foamelement, wash in liquid detergent andwater. Squeeze dry in a clean cloth. Saturate in engine oil.Squeeze in clean, absorbent cloth to remove all EXCESS oil.
AIR COOLING SYSTEM
Grass or chaff may clog engines air cooling sysespecially after prolonged service cutting tall, dry grInternal cooling fins and surfaces may require cleanin
prevent overheating and engine damage.
TA
Cover / blower housing
REMOVEPLASTIC COVERMODEL 100000
REMOVEBLOWER HOUSING
Air Cooling System
DO NOTBEND ORREMOVE
KEEP AREASWITHIN HEAVY LINE
CLEAR OF ALL DEBRIS
DO NOT LOOSENBAND BRAKE SCREWS
SCREWS
COVERSCREWS
SCREW
REMOVING AND RE-INSTALLING COVBLOWER HOUSING
[1] Remove 2 screws from cover (if equipped) ancover straight until tab clears.
[2] Remove 3 screws and blower housing.
Note: Do not loosen 2 band brake bracket screws. Dobend or remove flywheel guard.
[3] Clean areas shown.
[4] Reinstall blower housing and cover (if equipped)
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MAINTENANC
ENGINE AND ENGINE PARTS
We recommend that you see an authorized Briggs & Stratton Service Dealer for all maintenance and service of the enand engine parts. Use only genuine Briggs & Stratton parts.
WARNING
If you perform any maintenance on the engine, first disconnect the spark plug w
from the spark plug, and disconnect the battery at the negative terminal (elecstarter engines only) to prevent unintentional sparking. Unintentional sparking result in fire or electric shock. Unintentional start-up can result in entanglemtraumatic amputation or laceration. Use only correct tools.
WARNING Do not strike the flywheel with a hammer or hard object because the flywheel m
later shatter during operation.
Do not tamper with governor spring, links or other parts to increase engine spe
MUFFLER
Replacement parts for the
muffler must be the sameand installed in the sameposition as the original parts,otherwise fire can occur.
If muffler is equipped withspark arrester screen, re-
move screen for inspection. Replace screen if damagedor plugged.
WARNING
SPARK PLUG
Use only Briggs & Stratton Spark Tester (part number19368) to check for spark.
Note:In some areas, lo-cal law requires using re-sistor spark plug to sup-press ignition signals. Ifthis engine was originallyequipped with resistorspark plug, use same typefor replacement.
.030(0.76 mm)WIRE GAGE
RESISTOR P/N 802592STANDARD P/N 492167
COMBUSTION DEPOSITS
We recommend that after every 100-300 hours you havean authorized Briggs & Stratton Service Dealer removecombustion deposits from the cylinder, cylinder head, top
of piston, and around valves.
FUEL SYSTEM
WARNINGReplacement parts for fuelsystem (cap, hoses, tanks,filters, etc.) must be thesame as original parts,otherwise fire can occur.
CLEANING DEBRIS
CAUTION:Do not use water to clean engine partsWater could contaminate fuel system. Use a brusor dry cloth.
Engine parts should be clean to reduce the riskoverheating and ignition of amulated debris. This is espely important if cutting tall gr
WARNING
Daily or before every use, clean grass, chaff or acculated debris from engine. Keep linkage, spring and conclean. Keep area around and behind muffler free of
combustible debris.
Finger Guard Linkage, Springs& Controls
Muffler Area & Spark Arrester
CLEAN
ROTATINGSCREENFINGER GUARD
CLEAN
CLEAN
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ADJUSTMENTS
WARNING
Prevent unintentional starting.
Before performing adjustments, remove spark pluwire from spark plug.
CARBURETOR ADJUSTMENT
The carburetor on this engine is not adjustable.
WARNING
The manufacturer of the equipment on which thisengine is installed specifies top speed at which theengine will be operated. DO NOT EXCEED this speed.
[1] Loosen casing clamp screw.
[2] Move governor control lever, wire, and casing as faras possible in direction shown.
[3] Move remote throttle control to FAST.
[4] Tighten casing clamp screw.
[5] Move throttle to STOP (if equipped).
GOVERNOCONTRO
LEVER
CASING CLASCREW
CASING CLAMP
SCREW
ALTERNATEROUTING
THROTTLE ADJUSTMENT
If the engine does not start or if it runs roughly, theremote throttle control may need adjustment. Seeyour authorized Briggs & Stratton dealer or followthe instructions below.
TO ADJUST REMOTE THROTTLE*
* On some models the governor lever is bent intoposition and is not adjustable.
GOVERNOR CONTROL
LEVER
CASING CLAMSCREW
OR
CASING CLAMPSCREW
ALTERNATEROUTING
TO ADJUST STOP SWITCH
[1] Governor control lever should make good contactwith stop switch. Readjust if necessary.
[2] Check operation of throttle.
STOPSWITCH
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SERVICE & STORAGE
PARTIAL LIST OF GENUINE BRIGGS &STRATTON PARTS
BRIGGS & STRATTONPART PART NO.
Oil-Foamelement 272235 -or- 5047Oil 100005
Gas additive 5041Resistor spark plug 802592Standard spark plug 492167Long life platinum spark plug 5062(used on most L-head engines)Spark plug wrench 89838Spark tester 19368Oil pump kit 5056(uses standard electric drill to remove oil from engine quickly)
SERVICESee an Authorized Briggs & Stratton Service Dealer. Eachone carries a stock of Genuine Briggs & Stratton Parts andis equipped with special service tools. Trained mechanicsassure expert repair service on all Briggs & Strattonengines. Only dealers advertising as Authorized Briggs &Strattonare required to meet Briggs & Stratton standards.
When you purchase equipment powered by aBriggs & Stratton engine, you are assured ofhighly skilled, reliable service at more than30,000 Authorized Service Dealersworldwide, including more than 5,000 MasterService Technicians. Look for these signs
wherever Briggs & Stratton service is offered.
You may locate your nearest Authorized Briggs & StrattonService Dealer in our dealer locator map on our web site
or in the Yellow Pagesdirectory under Engines, Gasolineor GasolineEngines,or Lawn Mowersor similar category.
Note:Walking fingers logo and Yellow Pagesare regis-tered trademarks in various jurisdictions.
An illustrated shop manual includescommon specifications and detailed in-formation covering adjustment, tune-upand repair of Briggs & Stratton singlecylinder, L-head, 4 cycle engines. It isavailable for purchase from an Autho-
rized Briggs & Stratton Service Dealer oryou can order it from the factory. Write:Briggs & Stratton CorporationAttn: Service DivisionP. O. Box 1144Milwaukee, WI 53201
Part No. 270
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SERVICE & STORAGE
STORAGE
Engines stored over 30 days need special attention.
[1] To prevent gum from forming in fuel system or onessential carburetor parts:a) if fuel tank contains oxygenated or reformulated
gasoline (gasoline blended with an alcohol or anether), run engine until it stops from lack of fuel, or b) iffuel tank contains gasoline, either run engine until itstops from lack of fuel, or add a gasoline additive to thegas in the tank. (See parts list. Singleuse pouches ofgas additive are available from your service dealer.) Ifyou use a gas additive, run the engine for severalminutes to circulate the additive through the carburetor.Then, engine and fuel can be stored up to 24 months.
[2] While engine is still warm, change oil.
[3] Remove spark plug and pour about 1/2 oz. (15 mengine oil into cylinder. Replace spark plug and cslowly to distribute oil.
[4] Clean engine of surface debris, chaff or grass.
WARNING[5] Store in a clean, dry aDo not store in same aas a stove, furnace, wheater, or other appliathat uses a pilot lighhas a device that create a spark.
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In the USA and Canada, a 24 hour hot line, 1-800-233-3723,has a menu of pre-recorded messages offering you engine maintenance infor
Briggs & Stratton Corporation (B&S), the California Air Resources Board (CARB)and the United States Environmental Protection Agency (U.S. EPA)
Emission Control System Warranty Statement (Owners Defect Warranty Rights and Obligations)
EMISSION CONTROL WARRANTY COVERAGE IS APPLICABLETO CERTIFIED ENGINES PURCHASED IN CALIFORNIA IN 1995AND THEREAFTER, WHICH ARE USED IN CALIFORNIA, AND
TO CERTIFIED MODEL YEAR 1997 AND LATER ENWHICH ARE PURCHASED AND USED ELSEWHERE IUNITED STATES (AND AFTER JANUARY 1, 2001 IN CAN
California and United States Emission Control Defects Warranty StatementThe California Air Resources Board (CARB), U.S. EPA and B&S arepleased to explain the Emission Control System Warranty on your
model year 2000 and later small off-road engine (SORE). In California,new small off-road engines must be designed, built and equipped tomeet the States stringent anti-smog standards. Elsewhere in theUnited States, new non-road, spark-ignition engines certified for modelyear 1997 and later must meet similar standards set forth by the U.S.EPA. B&S must warrant the emission control system on your engine for
the periods of time listed below, provided there has been no abuglect or improper maintenance of your small off-road engine.
Your emission control system includes parts such as the carbair cleaner, ignition system, muffler and catalytic converter. Acluded may be connectors and other emission related asseWhere a warrantable condition exists, B&S will repair your smroad engine at no cost to you including diagnosis, parts an
Briggs & Stratton Emission Control Defects Warranty CoverageSmall off-road engines are warranted relative to emission controlparts defects for a period of two years, subject to provisions set forth
below. If any covered part on your engine is defective, the parrepaired or replaced by B&S.
Owners Warranty ResponsibilitiesAs the small off-road engine owner, you are responsible for the per-formance of the required maintenance listed in your Operating andMaintenance Instructions. B&S recommends that you retain all yourreceipts covering maintenance on your small off-road engine, butB&S cannot deny warranty solely for the lack of receipts or for yourfailure to ensure the performance of all scheduled maintenance.
As the small off-road engine owner, you should however be awarethat B&S may deny you warranty coverage if your small off-road en-gine or a part has failed due to abuse, neglect, improper mainte-nance or unapproved modifications.
You are responsible for presenting your small off-road enginAuthorized B&S Service Dealer as soon as a problem exisundisputed warranty repairs should be completed in a reasamount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights a
sponsibilities, you should contact a B&S Service Represent1-414-259-5262.
The emission warranty is a defects warranty. Defects are judnormal engine performance. The warranty is not related to anemission test.
Briggs & Stratton Emission Control Defects Warranty Provisions
The following are specific provisions relative to your Emission Control Defects Warranty Coverage. It is in addition to the B&S engine wfor non-regulated engines found in the Operating and Maintenance Instructions.
1. Warranted Parts
Coverage under this warranty extends only to the parts listed be-low (the emission control systems parts) to the extent theseparts were present on the engine purchased.
a. Fuel Metering System
Cold start enrichment system
Carburetor and internal parts Fuel Pump
b. Air Induction System
Air cleaner
Intake manifold
c. Ignition System
Spark plug(s)
Magneto ignition system
d. Catalyst System
Catalytic converter
Exhaust manifold
Air injection system or pulse valve
e. Miscellaneous Items Used in Above Systems Vacuum, temperature, position, time sensitive valves
and switches
Connectors and assemblies
2. Length of Coverage
B&S warrants to the initial owner and each subsequent purchaserthat the Warranted Parts shall be free from defects in materialsand workmanship which caused the failure of the WarrantedParts for a period of two years from the date the engine is deliv-ered to a retail purchaser.
3. No Charge
Repair or replacement of any Warranted Part will be perat no charge to the owner, including diagnostic labor whicto the determination that a Warranted Part is defectivediagnostic work is performed at an Authorized B&S SDealer. For emissions warranty service contact your nearthorized B&S Service Dealer as listed in the Yellow Pag
der Engines, Gasoline, Gasoline Engines, Lawn Mor similar category.
4. Claims and Coverage Exclusions
Warranty claims shall be filed in accordance with the proof the B&S Engine Warranty Policy. Warranty coverage sexcluded for failures of Warranted Parts which are not B&S parts or because of abuse, neglect or improper mnance as set forth in the B&S Engine Warranty Policy. B&liable to cover failures of Warranted Parts caused by theadd-on, non-original, or modified parts.
5. Maintenance
Any Warranted Part which is not scheduled for replacemenquired maintenance or which is scheduled only for regular tion to the effect of repair or replace as necessary shall ranted as to defects for the warranty period. Any Warrant
which is scheduled for replacement as required maintshall be warranted as to defects only for the period of timthe first scheduled replacement for that part. Any replapart that is equivalent in performance and durability may bin the performance of any maintenance or repairs. The oresponsible for the performance of all required maintenadefined in the B&S Operating and Maintenance Instructi
6. Consequential Coverage
Coverage hereunder shall extend to the failure of any components caused by the failure of any Warranted Part der warranty.
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In the USA and Canada, a 24 hour hot line, 1-800-233-3723,has a menu of pre-recorded messages offering you engine maintenance infor
About your engine warranty: (see next page for statement of LIMITED WARRANTY).
Briggs & Stratton welcomes warranty repair and apologizes to you
for being inconvenienced. Any Authorized Service Dealer may
perform warranty repairs. Most warranty repairs are handled
routinely, but sometimes requests for warranty service may not be
appropriate. For example, warranty would not apply if engine
damage occurred because of misuse, lack of routine maintenance,
shipping, handling, warehousing or improper installation. Similarly,
warranty is void if the serial number of the engine has been removed
or the engine has been altered or modified.
If a customer differs with the decision of the Service Dealer, an
investigation will be made to determine whether the warranty applies.
Ask the Service Dealer to submit all supporting facts to its Distributor
or the Factory for review. If the Distributor or the Factory decides that
the claim is justified, the customer will be fully reimbursed for those
items that are defective. To avoid misunderstanding which might
occur between the customer and the Dealer, listed below are some of
the causes of engine failure that the warranty does not cover.
Normal wear:
Engines, like all mechanical devices, need periodic parts
serv ice and replacement to perform well. Warranty will not coverrepair when normal use has exhausted the life of a part or an
engine.
Improper maintenance:
The life of an engine depends upon the conditions under which it
operates, and the care it receives. Some applicat ions, such as
tillers, pumps and rotary mowers, are very often used in dusty or
dir ty conditions, which can cause what appears to be premature
wear. Such wear, when caused by dirt, dust, spark plug cleaning
grit, or other abrasive material that has entered the engine
because of improper maintenance, is not covered by warranty.
This warranty covers engine related defective materialand/or workmanship only, and not replacement or refund of
the equipment to which the engine may be mounted. Nor
does the warranty extend to repairs required because of:
1. PROBLEMS CAUSED BY PARTS THAT ARE NOT
ORIGINAL BRIGGS & STRATTON PARTS.
2. Equipment controls or installations that prevent starting,
cause unsatisfactory engine performance, or shorten
engine life. (Contact equipment manufacturer.)
3. Leaking carburetors, clogged fuel pipes, sticking valves, or
other damage, caused by using contaminated or stale fuel.(Use clean, fresh, lead-free gasoline and Briggs & Stratton
gasoline stabili zer, Part No. 5041.)
4. Parts which are scored or broken because an engi
operated with insufficient or contaminated lubrica tin
an incorrect grade of lubricating oil. Refill when nece
OIL GARD may not shut down running engine.
damage may occur if oil level is not properly maint
Read the recommended maintenance intervals fo
engine outlined in the Operating & Mainte
Instructions.
5. Repair or adjustment of associated parts or assemblieas clutches, transmissions, remote controls, etc., wh
not manufactured by Briggs & Stratton.
6. Damage or wear to parts caused by dirt, which ente
engine because of improper air cleaner mainte
re-assembly, or use of a non-original air cleaner elem
cartridge. Read the recommended maintenance in
for your engine outlined in the Operating & Mainte
Instructions.
7. Parts damaged by overspeeding, or overheating cau
grass, debris , or dirt, which plugs or clogs the cooling
flywheel area, or damage caused by operating the en
a confined area without sufficient ventilation. Rerecommended maintenance intervals for your
outlined in the Operating & Maintenance Instruc tion
8. Engine or equipment parts broken by excessive vi
caused by a loose engine mounting, loose cutter b
unbalanced blades or loose or unbalanced imp
improper attachment of equipment to engine cran
overspeeding or other abuse in operation.
9. A bent or broken crankshaft, caused by striking a solid
with the cutter blade of a rotary lawn mower, or exc
v-belt tightness.
10. Routine tune-up or adjustment of the engine.
11. Engine or engine component failure, i.e., combustion ch
valves, valve seats, valve guides, or burned starter
windings, caused by the use of alternate fuels such as l
petroleum, natural gas, altered gasolines, etc.
Warranty is available only through service dealers
have been authorized by Briggs & Stratton Corpora
You may locate your nearest Authorized Briggs & S
Service Dealer in our dealer locator ma
www.briggsandstratton.com. Your nearest Auth
Service Dealer is also listed in the Yellow Pages o
telephone directory under Engines, GasolineGasoline Engines, Lawn Mowers, or similar cate
Briggs & Stratton Engines Are Made Under One Or More Of The Following Patents: Design D-247,177 (Other Patents Pending)
6,135,4266,116,2126,077,0636,064,0276,040,7676,014,808
5,894,7155,823,1535,819,5135,813,3845,809,9585,765,713
5,645,0255,642,7015,619,8455,606,9485,606,8515,548,955
5,546,9015,503,1255,501,2035,497,6795,320,7955,271,363
5,269,7135,265,7005,243,8785,235,9435,197,4255,197,422
5,191,8645,188,0695,186,1425,138,9965,105,3315,086,890
5,070,8295,058,5445,040,5035,040,6445,009,2084,996,956
4,995,3574,977,8794,971,2194,895,1194,875,4484,819,593
4,719,6824,694,7924,684,9174,633,5564,630,4984,522,080
4,520,2884,453,5074,430,984DES. 309,458DES. 309,457
DES. 3DES. 3DES. 3DES. 3DES. 3
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In the USA and Canada, a 24 hour hot line, 1-800-233-3723,has a menu of pre-recorded messages offering you engine maintenance infor
BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICYeffective July 1, 2001
Replaces all undated Warranties and all Warrantiesdated before July 1, 2001
LIMITED WARRANTY
Briggs & Strat ton Corporation will repair or replace, free of charge, any part, or parts of the engine that are defective in
material or workmanship or both. Transportat ion charges on parts submitted for repair or replacement under this
Warranty must be borne by purchaser. This warranty is effective for the time periods and subject to the conditionsstated herein. For warranty service, find the nearest Authorized Service Dealer in our dealer locator map at
www.briggsandstratton.com or as listed in the Yellow Pages under Engines, Gasoline, Gasol ine Engines, Lawn
Mowers or similar category.
THERE IS NO OTHER EXPRESS WARRANTY. IMPLIED WARRANTIES, INCLUDING THOSE OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO ONE YEAR FROM
PURCHASE, OR TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED.
LIABILITY FOR CONSEQUENTIAL DAMAGES UNDER ANY AND ALL WARRANTIES ARE EXCLUDED TO THE
EXTENT EXCLUSION IS PERMITTED BY LAW. Some countries or states do not allow limitations on how long an
implied warranty lasts, and some countries or states do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation and exclusion may not apply to you. This warranty gives you specif ic
legal rights and you may also have other righ ts which vary from country to country and state to state.
WARRANTY PERIOD*
WITHIN U.S.A. AND CANADA OUTSIDE U.S.A. AND CANAD
PRODUCTS CONSUMER USE COMMERCIAL USE CONSUMER USE COMMERCIAL
Vanguardengines. 2 years
Diamond Plus, Industrial Plus, I/C, andsleeve bore Intekengines.
2 years 1 year 2 years 1 year
Quantumand Diamond Power and KoolBore Intekengines.
2 years 90 days 2 years 90 days
Standard engines installed on lawnmowers, riders, edgers, chippers,shredders, string trimmers, tillers andSno/Gard engines.
2 years 90 days 1 year 90 days
Classic engines and all other standardengines and products.
1 year 90 days 1 year 90 days
* NOTE THE FOLLOWING SPECIAL WARRANTY PERIODS:5 years for consumer use, 90 days for commercial use of To
Mowstarter on Quantumand Intekengines; 2 years for emission control systems on engines certified by EPA and C
year for consumer use of all engines and products in India, commercial use of Vanguardengines in India, and consumer
Quantum Diamond Powerand Kool Bore Intekengines in Australia, New Zealand, the Middle East, and Africa.
The warranty period begins on the date of purchase by the first retai l consumer or commercial end user, and continues for the petime stated in the table above. Consumer use means personal residential househo ld use by a retail consumer. Commerci
means all other uses, including use for commercial, income producing or rental purposes. Once an engine has experienced co
cial use, it shall thereafter be considered as a commercial use engine for purposes of this warranty. Engines used in comp
racing or on commercial or rental tracks are not warrantied.
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