Operator’s Manual

FourceModel 21000 Model 21100

BRIGGSandSTRATTON.com�Copyright Briggs & Stratton Corporation

Milwaukee, Wisconsin 53201 U.S.A.Form No. 277097-3/07

Printed in U.S.A.

Fource

2

Safety References

The safety alert symbol is used to identify safetyinformation about hazards that can result in personalinjury. A signal word (DANGER, WARNING, orCAUTION) is used with the alert symbol to indicate thelikelihood and the potential severity of injury. In addition,a hazard symbol may be used to represent the type ofhazard.

DANGER indicates a hazard which, if notavoided, will result in death or seriousinjury.

WARNING indicates a hazard which, if notavoided, could result in death or seriousinjury.

CAUTION indicates a hazard which, if notavoided, might result in minor or moderateinjury.

CAUTION, when used without the alertsymbol, indicates a situation that could resultin damage to the engine.

This manual contains safetyinformation to make you aware of

the hazards and risks associated with engines, andhow to avoid them. Because Briggs & Stratton doesnot necessarily know what equipment this engine willpower, it is important that you read and understandthese instructions and the instructions for theequipment this engine powers.

Table of ContentsSafety References 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starting 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stopping 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Troubleshooting 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications and Emission Information 11. . . . . . . . . . . Maintenance 12-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Warranty Information 17. . . . . . . . . . . . . . . . . . . . . . . . . . . .

SYMBOLS ASSOCIATEDWITH THIS ENGINE:

Explosion

Toxic Fumes

Moving Parts

Shock

Hot Surface

Kickback

Fire

Fuel Shutoff

ReadManual

Choke

Oil

Fuel

On Off

Stop

Primer

WARNINGBriggs & Stratton does not approve or authorize theuse of these engines on 3-wheel All TerrainVehicles (ATVs), motor bikes, fun/recreationalgo-karts, aircraft products or vehicles intended foruse in competitive events. Use of these engines insuch applications could result in property damage,serious injury (including paralysis), or even death.

The engine exhaust from this product containschemicals known to the State of California to causecancer, birth defects, or other reproductive harm.

WARNING

This engine is shipped from Briggs & Strattonwithout oil. If you start the engine without oil,the engine will be damaged beyond repair andwill not be covered under warranty.

CAUTION

3

Features1. Carburetor2. Stop Switch location, if equipped/stop wires3. Rope Handle4. Fuel Fill5. Air Cleaner6. Choke

7. Spark Plug8. Primer Bulb9. Engine Identification

Model XXXXX Type XXXXXX CodeXXXXXXXX

10. Oil Fill/Dipstick

10

7

8

5

4

6

3

9

2

1

6

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Safety

Gasoline and its vapors are extremelyflammable and explosive.Fire or explosion can cause severe burnsor death.

WHEN ADDING FUEL• Turn engine OFF and let engine cool at least 2

minutes before removing gas cap.• Fill fuel tank outdoors or in well-ventilated area.• Do not overfill fuel tank.• 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. Replace ifnecessary.

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, set choke to OPEN/RUN

position, place throttle in FAST and crank untilengine starts.

WHEN OPERATING EQUIPMENT• Do not choke carburetor to stop engine.

WHEN TRANSPORTING EQUIPMENT• Transport with fuel tank EMPTY.

WHEN STORING GASOLINE OR EQUIP-MENT WITH FUEL IN TANK

• Store away from furnaces, stoves, waterheaters or other appliances that have pilot lightor other ignition source because they can ignitegasoline vapors.

WARNING

This engine is shipped from Briggs & Strattonwithout oil. If you start the engine without oil,the engine will be damaged beyond repair andwill not be covered under warranty.

CAUTION

Starting engine creates sparking.Sparking can ignite nearby flammablegases.Explosion and fire could result.

• If there is natural or LP gas leakage in area, donot start engine.

• Do not use pressurized starting fluids becausevapors are flammable.

WARNING

Rapid retraction of starter cord (kickback)will pull hand and arm toward enginefaster than you can let go.Broken bones, fractures, bruises orsprains could result.

• When starting engine, pull cord slowly untilresistance is felt, then pull rapidly.

• Direct coupled equipment components such as,but not limited to, blades, impellers, pulleys,sprockets, etc., must be securely attached.

WARNING

WARNINGRotating parts can contact or entanglehands, feet, hair, clothing, or accessories.Traumatic amputation or severe lacera-tion 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 caught.

WARNINGEngines give off carbon monoxide, anodorless, colorless, poison gas.Breathing carbon monoxide can causenausea, fainting or death.

• Start and run engine outdoors.• Do not start or run engine in enclosed area,

even if doors or windows are open.

WARNING

• Allow muffler, engine cylinder and fins to coolbefore touching.

• Remove accumulated debris from muffler areaand cylinder area.

• Install and maintain in working order a sparkarrester before using equipment onforest-covered, grass-covered, brush-coveredunimproved land. The state of Californiarequires this (Section 4442 of the CaliforniaPublic Resources Code). Other states mayhave similar laws. Federal laws apply on federalland.

Running engines produce heat. Engineparts, especially muffler, becomeextremely hot.Severe thermal burns can occur oncontact.Combustible debris, such as leaves,grass, brush, etc. can catch fire.

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StartingThis engine is shipped WITHOUT oil. See section on oilfor recommendations, capacity, and filling details.

Full Choke

Choke LeverPrimer Bulb

Half Choke

Off Position

1. Set unit on flat surface and push primer bulb 15times FOR A NEW ENGINE. Push primer bulb 8times for all future starts.

2. Move red choke lever to the FULL CHOKEposition.

3. Not all applications have a throttle. If theequipment has this a throttle, squeeze throttletrigger. If the engine is still warm from a previousstart, do not squeeze throttle.

TypicalThrottleTrigger

4. Pull starter handle sharply until engine runs.

5. Wait a maximum of 10 seconds, then movechoke lever to HALF CHOKE position.

6. Run the engine at HALF CHOKE for 20 secondsor until unit accelerates smoothly. Move choke toOFF position.

7. Wait a minimum of 20 seconds, then releasethrottle trigger.

Operating engine at an excessive speed withoutproper engine loading will cause damage. DO NOToperate a string trimmer with a line shorter than10’’ diameter for extended periods.

CAUTION

The manufacturer of the equipment on whichthis engine is installed specifies top speed atwhich the engine will be operated. DO NOTEXCEED this speed.

WARNING

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Stopping

WARNINGDo not stop engine by moving choke control toCHOKE. Backfire, fire or engine damage couldoccur.

1. Depress stop switch located on the engine orequipment to stop.

Go to www.briggsandstratton.com or call 1-800-233-3723

Need Assistance?

7

This engine is shipped from Briggs & Strattonwithout oil. If you start the engine without oil, theengine will be damaged beyond repair and willnot be covered under warranty.

CAUTION

• Ensure fuel cap is in place beforestarting engine

• Turn engine OFF and let enginecool at least 2 minutes beforeremoving fuel cap.

• Check fuel lines, tank, cap, andfittings frequently for cracks orleaks. Replace if necessary.

• Do not crank engine with spark plugremoved.

WARNING

If engine is tipped to transport equipment, toremove debris, to drain oil, etc., keep the sparkplug side of engine up.

CAUTION

Troubleshooting

Out of fuel• Prime engine• If engine is cold, ensure choke is set

correctly.• Add fuel

Engine flooded• Set choke to FULL CHOKE position and

continue to pull starter handle.

Fouled spark plug/engine fails toproduct spark

• Remove spark plug and clean it. Checkthe spacing on the electrode and set thegap to the correct dimension. SeeMaintenance Section. If plug is damaged,replace with a new spark plug.

• Ensure the spark plug is installed and wireis connected.

• There maybe slight oil accumulation in thecrankcase upon starting. This is normal.

• If excessive smoke or smoke is heavy,ensure choke is in OFF CHOKE position.

• Check for fouled spark plug.• Check air filter for debris.

Engine will not start

Engine is smoking or running rough

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OilCapacityEngine holds approximately 3 ounces (90 ml).Change oil after first 4 hours of use.

Oil Recommendation• Use a high quality detergent oil classified “For

Service SF, SG, SH, SJ” or higher, such as Briggs &Stratton SAE 30, Part Number 100091 (3.2oz) orBriggs & Stratton Synthetic Oil, Part Number100074.

• Do not use special additives.• Choose a viscosity according to the table below.

°F -20 0 20 40 60 80 100

°C -30 -20 -10 0 10 20 30 40

STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE

**

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SAE Viscosity Grades

*

Air cooled engines run hotter than automotive engines.The use of non-synthetic multi-viscosity oils (5W-30,10W-30, etc.) in temperatures above 40° F (4° C) willresult in higher than normal oil consumption. Whenusing a multi-viscosity oil, check oil level morefrequently.

CAUTION

* Synthetic oil must be used when operating engineunder 40� F (4� C) or engine damage will occur.

CAUTION

** Use of SAE 30 oil below 50° F (10° C) will result in hardstarting and possible engine damage due to inadequatelubrication.

CAUTION

Adding Oil

Engine must be level, with oil fill facing up, tocheck oil. If engine is not level, dipstick reading willnot be accurate. This will lead to possible over orunder filling causing damage to the engine.

CAUTION

KEEP ENGINE LEVEL

• Check oil level before starting the engine.• Check level daily, or after every eight (8) hours of

use.• Keep oil level at FULL.• DO NOT over fill. Use oil measure cup for filling.• Add only half ounce to 1 ounce of oil at a time.

1 ounce

0.5 ounce

1. Place engine level. Remove dipstick. Use the oilmeasure cup to pour oil slowly into engine. Do not over fill.

Oil Fill

2. Tighten dipstick down.

3. To check oil level, remove and wipe the dipstickclean with cloth. Tighten dipstick down. Removeand check oil level.

Dipstick

4. Verify FULL level of oil by presence of oil in holeon dipstick, or by measure line.

Full

5. If needed, add only half ounce of oil at a time tobring it to FULL. Re-check level.

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Changing Oil & Checking Level

Change oil after first 4 hours of use, then every 8 hours.Change oil every 4 hours when operating the engineunder heavy load or in high temperatures.

• Disconnect spark plugwire and keep it away from spark plug.

WARNING

1. Change oil while engine is OFF but still warm,ensure fuel cap is tightened securely.

2. Remove dipstick and drain oil in direction shown.3. Place engine level. Using oil measure cup pour

oil slowly adding half ounce at a time. Do notover fill.Note: Engine holds approximately 3 oz (90 ml).

4. To re-check oil level, remove dipstick and wipeclean with cloth. Tighten dipstick down. Removeand check oil level.

5. Replace dipstick tightly, and reconnect spark plugwire before starting engine.

Used oil is a hazardous waste product. Disposeof used oil properly. Do not discard withhousehold waste. Check with your localauthorities, service center, or dealer for safedisposal/recycling facilities.

CAUTIONOilFill

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FuelType of Fuel to Use

• Use clean, fresh, regular unleaded gasoline with aminimum of 85 octane. Fresh fuel prevents gumfrom forming in the fuel system or on essentialcarburetor parts. Purchase fuel in quantity that canbe used within 30 days.

• For engine protection use Briggs & StrattonGasoline Additive available from your AuthorizedBriggs & Stratton Dealer.

• Do not use gasoline which contains Methanol.• Do not mix oil with gasoline.• This engine is certified to operate on gasoline.

Exhaust Emission Control System: EM (EngineModifications).

Adding Fuel1. Turn engine OFF and let engine cool at least 2

minutes before removing gas cap.

2. Tilt engine at angle shown to properly fill fueltank.

Fuel Fill

3. Remove cap and add fuel until level isapproximately 1’’ below top of fuel tank neck. Becareful not to over fill.

4. Replace cap before starting.

Some fuels, called oxygenated or reformulatedfuels, are fuels blended with alcohols or ethers.Excessive amounts of these blends candamage the fuel system or cause performanceproblems. If any undesirable operatingsymptoms occur, use gasoline with a lowerpercentage of alcohol or ether.

CAUTION

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Specifications

All the components used to build this engineassembly must remain in place for the properoperation of this engine.

CAUTION

We recommend that you use an authorized Briggs &Stratton Service Dealer for all maintenance and serviceof the engine and engine parts. Use only genuineBriggs & Stratton parts.

GENERAL INFORMATIONThis is a single cylinder, air-cooled engine. It is a lowemissions engine.

In the state of California, Model 21000 and 21100 enginesare certified by the California Air Resources Board tomeet emissions standards for 50 hours. Such certificationdoes not grant the purchaser, owner or operator of thisengine any additional warranties with respect to theperformance or operational life of this engine. This engineis warranted solely according to the product andemissions warranties stated elsewhere in this manual.

Model 21000Bore 1.575 in. (40 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . .

Stroke 1.065 in. (27 mm). . . . . . . . . . . . . . . . . . . . . . . . . .

Displacement 2.074 cu. in. (34 cc). . . . . . . . . . . . . . . . . .

Model 21100Bore 1.575 in. (40 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . .

Stroke 1.250 in. (31.75 mm). . . . . . . . . . . . . . . . . . . . . . .

Displacement 2.44 cu. in. (40 cc). . . . . . . . . . . . . . . . . . .

Note: For practical operation, the horsepower loading should notexceed 85% of rated horsepower. Engine power will decrease 3-1/2%for each 1,000 feet (300 meters) above sea level and 1% for each 10°F (5.6° C) above 77° F (25° C).

Tune-Up SpecificationsArmature air gap 0.010 − 0.014 in. (0.25 − 0.36 mm). .

Spark plug gap 0.025 in. (0.64 mm). . . . . . . . . . . . . . . . . Valve clearance with valve springs installed and piston 1/4in. (6 mm) past top dead center (check when engine iscold). See Repair Manual P/N 271172.Intake 0.002 − 0.004 in. (0.05 − 0.10 mm). . . . . . . . . . . .

Exhaust 0.002 − 0.004 in. (0.05 − 0.10 mm). . . . . . . . . .

Model, Type and Code NumberTo get replacement parts or technical assistance in thefuture write your engine Model, Type and Code numberalong with the date of purchase here. These numbersare located on your engine. For the location, seepage 3, Engine Features.

Model

Type

Code

Technical Information

Engine Power Rating Information

The gross power rating for individual gas enginemodels is labeled in accordance with SAE (Society ofAutomotive Engineers) code J1940 (Small EnginePower & Torque Rating Procedure), and ratingperformance has been obtained and corrected inaccordance with SAE J1995 (Revision 2002-05).Torque values are derived at 3060 RPM; horsepowervalues are derived at 3600 RPM. Actual gross enginepower will be lower and is affected by, among otherthings, ambient operating conditions andengine-to-engine variability. Given both the wide arrayof products on which engines are placed and thevariety of environmental issues applicable to operatingthe equipment, the gas engine will not develop therated gross power when used in a given piece of powerequipment (actual “on-site” or net power). Thisdifference is due to a variety of factors including, butnot limited to, accessories (air cleaner, exhaust,charging, cooling, carburetor, fuel pump, etc.),application limitations, ambient operating conditions(temperature, humidity, altitude), and engine-to-enginevariability. Due to manufacturing and capacitylimitations, Briggs & Stratton may substitute an engineof higher rated power for this Series engine.

Emission InformationEngines that are certified to meet the California Air ResourcesBoard (CARB) Tier 2 Emission Standards must displayinformation regarding the Emissions Durability Period and theAir Index. Briggs & Stratton makes this information available tothe consumer on our emission labels. The engine emissionlabel will indicate certification information.The Emissions Durability Period describes the number ofhours of actual running time for which the engine is certified tobe emissions compliant, assuming proper maintenance inaccordance with the Operating & Maintenance Instructions.The following categories are used:

Moderate: Engine is certified to be emission compliant for 50hours of actual engine running time.

Intermediate: Engine is certified to be emission compliant for125 hours of actual engine running time.

Extended: Engine is certified to be emission compliant for 300hours of actual engine running time. For example, a typicalwalk-behind lawn mower is used 20 to 25 hours per year.Therefore, the Emissions Durability Period of an engine withan intermediate rating would equate to 10 to 12 years.

Certain Briggs & Stratton engines will be certified to meet theUnited States Environmental Protection Agency (USEPA)Phase 2 emission standards. For Phase 2 certified engines,the Emissions Compliance Period referred to on the EmissionsCompliance label indicates the number of operating hours forwhich the engine has been shown to meet Federal emissionrequirements.

For handheld engines:Category C = 50 hoursCategory B = 125 hoursCategory A = 300 hours

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MaintenanceRegular maintenance will improve the performance andextend the life of the engine. See any Authorized Briggs& Stratton Dealer for service. Use only genuineBriggs & Stratton parts. Other parts may notperform as well, may damage the engine, and mayresult in injury. In addition, use of other parts may voidyour warranty.

Emission ControlMaintenance, replacement or repair of the emissioncontrol devices and systems may be performed byany nonroad engine repair establishment orindividual. However, to obtain no charge repairs underthe terms and provisions of the Briggs & Strattonwarranty statement, any service or emission controlpart repair or replacement must be performed by afactory authorized dealer.

Unintentional sparking can result infire or electric shock.

Fire or explosion can cause severeburns or death.

Unintentional start-up can result inentanglement, traumaticamputation, or laceration.

• Disconnect spark plug wire and keep it awayfrom spark plug.

• Disconnect battery at negative terminal (onlyengines with electric start).

• Use only correct tools.

During maintenance or repairs:

• Do not strike the flywheel with a hammer orhard object because the flywheel may latershatter during operation.

• Do not tamper with governor spring, links orother parts to increase engine speed.

When testing for spark:• Use approved spark plug tester.• Do not check for spark with spark plug

removed.

WARNING

Follow the instructions and schedules indicated below.

TaskPerform task at hourlyor calendar interval, whichever comes first.

Check Oil Level

Change Oil **

Service AIr Filter*

Clean/Replace Spark Plugs

* Clean more often under dusty conditions or when airborne debris is present. Replace air cleaner, if very dirty.** Change oil after first 4 hours of use, then every 8 hours. Change oil every 4 hours when operating the engine

under heavy load or in high temperatures.

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Air CleanerCheck and clean the intake chamber for dirt. If the foamair filter is dirty and worn, replace with clean filter.

1. Push cover tab to release cover, then pull coveraway from engine to service air filter.

Cover Tab

Foam Air Fil-ter

Clean intakearea

Foam Air FilterTo clean wash in liquid detergent and water. Squeezedry in a clean cloth. Allow to dry thoroughly. Dip foamair filter in clean engine oil, then squeeze out excess oilin clean cloth. Engine will smoke if too much oil is lefton the filter.

Do not use pressurized air or solvents to cleancartridge. Pressurized air can damage cartridge;solvents will dissolve cartridge.

CAUTION

Ensure air cleaner, retainer, and cover areproperly installed before starting engine.

WARNING

14

Cleaning DebrisDaily or before every use, clean accumulated debrisfrom engine. Keep linkage, spring and controls clean.Keep area behind muffler free of any combustibledebris.

Spark PlugCheck the spark plug every 50 hours. Replace thespark plug if upon inspection the electrode is burned orworn. Ensure the spark plug is clean. Check the gapwith a feeler gauge and reset if necessary. Use onlyBriggs & Stratton Spark Tester (part number 19368) tocheck for spark.Champion style plug set gap at 0.025 in.. . . . . . . . . . . . NGK style plug set gap at 0.020-0.024 in.. . . . . . . . . . . .

Use a wire gauge tool to checkthe gap on the spark plug.

Note: In some areas, local law requires using a resistorspark plug to suppress ignition signals. If this enginewas originally equipped with a resistor spark plug, usesame type for replacement.

Fuel System

Replacement parts for fuel system (cap, hoses,tanks, filters, etc.) must be the original parts, other-wise fire can occur.

WARNING

Do not use water to clean engine parts. Watercould contaminate fuel system. Use a brush or drycloth.

CAUTION

Engine parts should be kept clean to reduce the riskof overheating and ignition of accumulated debris.

WARNING

Ensure air cleaner, retainer, and cover areproperly installed before starting engine.

WARNING

15

Storage

The following precautions should be taken if storingyour trimmer unit for a period exceeding 30 days, or forseasonal storage.

• While engine is still warm, change oil.• Clean engine of surface debris, chaff or grass.• Drain all fuel from fuel tank into proper receptacle

for storage.• Press primer bulb 15 times to purge fuel from

carburetor and fuel lines. Drain remaining fuel intoproper receptacle. If fuel is to be disposed, pleaserefer to local rules for proper disposal.

• Remove spark plug. Place 1 teaspoon or 5 ml. of oilinto spark plug hole.

• Pull starter rope slowly 8-10 times to properly coatthe cylinder bore and piston for storage. Replacespark plug and tighten. Any residual oil may burn offin subsequent starts. This may result in whitesmoke emission from muffler.

• This trimmer may be stored in a variety of positions.It is best to store in horizontal position with thespark plug up. Do not store or transport with thespark plug down.

Note: Storing or transporting with the spark plug downwill result in hard starting and/or engine smoking.

• Store in a clean dry area.• When removing unit from storage, only use fresh

gasoline. Perform operation checks (seemaintenance schedule) before starting engine.

When storing fuel or equipment with fuel intank:

WARNING

• Store away from furnaces, stoves, water heaters,or other appliances that have a pilot light or otherignition source because they can ignite vapors.

When Transporting Equipment:• Transport with fuel tank EMPTY or with

fuel shut-off valve OFF.

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Service See an Authorized Briggs & Stratton Service Dealer forall your engine service needs. Each one carries a stockof Genuine Briggs & Stratton Parts and is equippedwith special service tools. Trained mechanics assureexpert repair service on all Briggs & Stratton engines.Only dealers advertising as “Authorized Briggs &Stratton” are required to meet Briggs &Stratton standards.

When you purchase equipmentpowered by Briggs & Stratton, you areassured of highly skilled, reliableengine service at more than 30,000Authorized Service Dealers worldwide,including more than 6,000 MasterService Technicians. Look for thesesigns wherever Briggs & Strattonservice is offered.

You may find the nearest Authorized Service Dealerin our dealer locator map at

www.briggsandstratton.com, or bycalling 1-800-233-3723

PARTIAL LIST OF GENUINE BRIGGS & STRATTON

PARTSPART PART NO.Air Filter Foam 696923. . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil (3.2 oz) 100091. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil (20 oz) 100005. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Oil Synthetic (32 oz) 100074. . . . . . . . . . . . . . . . . . . . . . . Fuel Stabilizer 5041. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spark Plug 696876. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spark Plug Wrench 19374. . . . . . . . . . . . . . . . . . . . . . . . . Spark Tester 19368. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tachometer 19389. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . An illustrated shop manual includes commonspecifications and detailed information coveringadjustment, tune-up and repair of Briggs & Strattonsingle cylinder, 4 cycle engines. It is available forpurchase from an Authorized Briggs & Stratton ServiceDealer or you can order it fromwww.briggsandstratton.com.

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Warranty InformationBriggs & Stratton Corporation (B&S), the California Air Resources Board (CARB)

and the United States Environmental Protection Agency (U.S. EPA)Emissions Control System Warranty Statement

(Owner’s Defect Warranty Rights and Obligations)

The California Air Resources Board (CARB), U.S. EPA andB&S are pleased to explain the Emissions Control SystemWarranty on your small off-road engine (SORE). InCalifornia, new small off-road engines model year 2006 andlater must be designed, built and equipped to meet theState’s stringent anti-smog standards.Elsewhere in the United States, new non-road, spark-ignitionengines certified for model year 1997 and later must meetsimilar standards set forth by the U.S. EPA. B&S mustwarrant the emissions control system on your engine for the

periods of time listed below, provided there has been noabuse, neglect or improper maintenance of your smalloff-road engine.Your emissions control system includes parts such as thecarburetor, air cleaner, ignition system, fuel line, muffler andcatalytic converter. Also included may be connectors andother emissions related assemblies.Where a warrantable condition exists, B&S will repair yoursmall off-road engine at no cost to you including diagnosis,parts and labor.

Briggs & Stratton Emissions Control Defects Warranty Coverage

Small off-road engines are warranted relative to emissions control parts defects for a period of two years, subject to provisions setforth below. If any covered part on your engine is defective, the part will be repaired or replaced by B&S.

Owner’s Warranty Responsibilities

As the small off-road engine owner, you are responsible forthe performance of the required maintenance listed in yourOperating and Maintenance Instructions. B&S recommendsthat you retain all your receipts covering maintenance onyour small off-road engine, but B&S cannot deny warrantysolely for the lack of receipts or for your failure to ensure theperformance of all scheduled maintenance.As the small off-road engine owner, you should however beaware that B&S may deny your warranty coverage if yoursmall off-road engine or a part has failed due to abuse,neglect, improper maintenance or unapprovedmodifications.

You are responsible for presenting your small off-road engineto an Authorized B&S Service Dealer as soon as a problemexists.

The undisputed warranty repairs should be completed in areasonable amount of time, not to exceed 30 days.

If you have any questions regarding your warranty rights andresponsibilities, you should contact a B&S ServiceRepresentative at 1-414-259-5262.

The emissions warranty is a defects warranty. Defects arejudged on normal engine performance. The warranty is notrelated to an in-use emissions test.

Briggs & Stratton Emissions Control Defects Warranty Provisions

The following are specific provisions relative to your Emissions Control Defects Warranty Coverage. It is in addition to the B&Sengine warranty for non-regulated engines found in the Operating and Maintenance Instructions.1. Warranted Parts

Coverage under this warranty extends only to the partslisted below (the emissions control systems parts) to theextent these parts were present on the enginepurchased.a. Fuel Metering System

• Cold start enrichment system• Carburetor and internal parts• Fuel pump• Fuel line, fuel line fittings, clamps• Fuel tank, cap and tether• Carbon canister

b. Air Induction System• Air cleaner• Intake manifold• Purge and vent line

c. Ignition System• Spark plug(s)• Magneto ignition system

d. Catalyst System• Catalytic converter• Exhaust manifold• Air injection system, Pulse valve

e. Miscellaneous Items• Vacuum, temperature, position, time sensitive

valves and switches• Connectors and assemblies

2. Length of CoverageB&S warrants to the initial owner and each subsequentpurchaser that the Warranted Parts shall be free fromdefects in materials and workmanship which caused thefailure of the Warranted Parts for a period of two yearsfrom the date the engine is delivered to a retail purchaser.

3. No ChargeRepair or replacement of any Warranted Part will be

performed at no charge to the owner, includingdiagnostic labor which leads to the determination that aWarranted Part is defective, if the diagnostic work isperformed at an Authorized B&S Service Dealer. Foremissions warranty service contact your nearestAuthorized B&S Service Dealer as listed in the “YellowPages” under “Engines, Gasoline,” “Gasoline Engines,”“Lawn Mowers,” or similar category.

4. Claims and Coverage ExclusionsWarranty claims shall be filed in accordance with theprovisions of the B&S Engine Warranty Policy. Warrantycoverage shall be excluded for failures of WarrantedParts which are not original B&S parts or because ofabuse, neglect or improper maintenance as set forth inthe B&S Engine Warranty Policy. B&S is not liable tocover failures of Warranted Parts caused by the use ofadd-on, non-original, or modified parts.

5. MaintenanceAny Warranted Part which is not scheduled forreplacement as required maintenance or which isscheduled only for regular inspection to the effect of“repair or replace as necessary” shall be warranted as todefects for the warranty period. Any Warranted Part whichis scheduled for replacement as required maintenanceshall be warranted as to defects only for the period of timeup to the first scheduled replacement for that part. Anyreplacement part that is equivalent in performance anddurability may be used in the performance of anymaintenance or repairs. The owner is responsible for theperformance of all required maintenance, as defined inthe B&S Operating and Maintenance Instructions.

6. Consequential CoverageCoverage hereunder shall extend to the failure of anyengine components caused by the failure of anyWarranted Part still under warranty.

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Briggs & Stratton welcomes warranty repair andapologizes to you for being inconvenienced. AnyAuthorized Service Dealer may perform warrantyrepairs. Most warranty repairs are handled routinely,but sometimes requests for warranty service may notbe appropriate. For example, warranty would not applyif engine damage occurred because of misuse, lack ofroutine maintenance, shipping, handling, warehousingor improper installation. Similarly, warranty is void ifthe serial number of the engine has been removed orthe engine has been altered or modified.

If a customer differs with the decision of the ServiceDealer, an investigation will be made to determinewhether the warranty applies. Ask the Service Dealerto submit all supporting facts to his Distributor or theFactory for review. If the Distributor or the Factorydecides that the claim is justified, the customer will befully reimbursed for those items that are defective. Toavoid misunderstanding which might occur betweenthe customer and the Dealer, listed below are some ofthe causes of engine failure that the warranty does notcover.

Normal wear:

Engines, like all mechanical devices, need periodicparts service and replacement to perform well.Warranty will not cover repair when normal use hasexhausted the life of a part or an engine.

Improper maintenance:

The life of an engine depends upon the conditionsunder which it operates, and the care it receives.Some applications, such as tillers, pumps and rotarymowers, are very often used in dusty or dirtyconditions, which can cause what appears to bepremature wear. Such wear, when caused by dirt,dust, spark plug cleaning grit, or other abrasivematerial that has entered the engine because ofimproper maintenance, is not covered by warranty.

This warranty covers engine related defectivematerial and/or workmanship only, and notreplacement or refund of the equipment to whichthe engine may be mounted. Nor does thewarranty extend to repairs required because of:

1. PROBLEMS CAUSED BY PARTS THAT ARENOT ORIGINAL BRIGGS & STRATTON PARTS.

2. Equipment controls or installations that preventstarting, cause unsatisfactory engine performance,or shorten engine life. (Contact equipmentmanufacturer.)

3. Leaking carburetors, clogged fuel pipes, stickingvalves, or other damage, caused by usingcontaminated or stale fuel.

4. Parts which are scored or broken because anengine was operated with insufficient orcontaminated lubricating oil, or an incorrect gradeof lubricating oil (check and refill when necessaryand change at recommended intervals.) OILGARD may not shut down running engine. Enginedamage may occur if oil level is not properlymaintained.

5. Repair or adjustment of associated parts orassemblies such as clutches, transmissions,remote controls, etc., which are not manufacturedby Briggs & Stratton.

6. Damage or wear to parts caused by dirt, whichentered the engine because of improper aircleaner maintenance, re-assembly, or use of anon-original air cleaner element or cartridge. (Atrecommended intervals, clean and and/or replacethe filter as stated in the Operator’s Manual.

7. Parts damaged by over-speeding, or overheatingcaused by grass, debris, or dirt, which plugs orclogs the cooling fins, or flywheel area, or damagecaused by operating the engine in a confined areawithout sufficient ventilation. Clean engine debrisat recommended intervals as stated in theOperator’s Manual.

8. Engine or equipment parts broken by excessivevibration caused by a loose engine mounting,loose cutter blades, unbalanced blades or loose orunbalanced impellers, improper attachment ofequipment to engine crankshaft, over-speeding orother abuse in operation.

9. A bent or broken crankshaft, caused by striking asolid object with the cutter blade of a rotary lawnmower, or excessive v-belt tightness.

10. Routine tune-up or adjustment of the engine.

11. Engine or engine component failure, i.e.,combustion chamber, valves, valve seats, valveguides, or burned starter motor windings, causedby the use of alternate fuels such as, liquifiedpetroleum, natural gas, altered gasolines, etc.

Warranty service is available only throughauthorized service dealers by Briggs & StrattonCorporation. Locate your nearest AuthorizedService Dealer in our dealer locator map onwww.briggsandstratton.com or by calling1-800-233-3723, or as listed in the ‘Yellow Pages�’.

ABOUT YOUR ENGINE WARRANTY

19

LIMITED WARRANTYBriggs & Stratton Corporation will repair or replace, free of charge, any part(s) of the engine that is defectivein material or workmanship or both. Transportation charges on product submitted for repair or replacementunder this warranty must be borne by purchaser. This warranty is effective for and is subject to the timeperiods and conditions stated below. For warranty service, find the nearest Authorized Service Dealer inour dealer locator map at www.briggsandstratton.com, or by calling 1-800-233-3723, or as listed in the‘Yellow Pages™’.

THERE IS NO OTHER EXPRESS WARRANTY. IMPLIED WARRANTIES, INCLUDING THOSE OFMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED TO ONE YEAR FROMPURCHASE, OR TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED WARRANTIES AREEXCLUDED. LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES ARE EXCLUDED TO THEEXTENT EXCLUSION IS PERMITTED BY LAW. Some states or countries do not allow limitations on howlong an implied warranty lasts, and some states or countries do not allow the exclusion or limitation ofincidental or consequential damages, so the above limitation and exclusion may not apply to you. Thiswarranty gives you specific legal rights and you may also have other rights which vary from state to state andcountry to country.

Effective 12/06

BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICY

WARRANTY TERMS **

Brand / Product Type Consumer Use Commercial UseVanguard� 2 years 2 yearsExtended Life Series�, I/C�, Intek I/C�, Intek Pro� 2 years 1 yearKerosene Fuel Operated Engines 1 year 90 daysAll Other Briggs & Stratton Engines 2 years 90 days

** Engines used on Home Standby Generator applications are warranted under consumer use only.This warranty does not apply to engines on equipment used for prime power in place of a utility.Engines used in competitive racing or on commercial or rental tracks are not warranted.

The warranty period begins on the date of purchase by the first retail consumer or commercial end user, andcontinues for the period of time stated in the table above. “Consumer use” means personal residential household useby a retail consumer. “Commercial use” means all other uses, including use for commercial, income producing orrental purposes. Once an engine has experienced commercial use, it shall thereafter be considered as a commercialuse engine for purposes of this warranty.

NO WARRANTY REGISTRATION IS NECESSARY TO OBTAIN WARRANTY ON BRIGGS & STRATTONPRODUCTS. SAVE YOUR PROOF OF PURCHASE RECEIPT. IF YOU DO NOT PROVIDE PROOF OF THEINITIAL PURCHASE DATE AT THE TIME WARRANTY SERVICE IS REQUESTED, THE MANUFACTURINGDATE OF THE PRODUCT WILL BE USED TO DETERMINE THE WARRANTY PERIOD.

Briggs & Stratton Engines Are Made Under One Or More Of The Following Patents: Design D-247,177 (Other Patents Pending)

6,691,6836,647,9426,622,6836,615,7876,617,7256,603,2276,595,8976,595,1766,584,9646,557,8336,542,074

6,520,1416,495,2676,494,1756,472,7906,460,5026,456,5156,382,1666,369,5326,356,0036,349,6886,347,614

6,325,0366,311,6636,284,1236,263,8526,260,5296,242,8286,239,7096,237,5556,230,6786,213,0836,202,616

6,145,4876,142,2576,135,4266,116,2126,105,5486,347,6146,082,3236,077,0636,064,0276,040,7676,014,808

6,012,4205,992,3675,904,1245,894,7155,887,6785,852,9515,843,3455,823,1535,819,5135,813,3845,809,958

5,803,0355,765,7135,732,5555,645,0255,642,7015,6283525,619,8455,606,9485,606,8515,605,1305,497,679

5,548,9555,546,9015,445,0145,503,1255,501,2035,497,6795,320,7955,301,6435,271,3635,269,7135,265,700

5,243,8785,235,9435,234,0385,228,4875,197,4265,197,4255,197,4225,191,8645,188,0695,186,1425,150,674

5,138,9965,086,8905,070,8295,058,5445,040,6445,009,2084,996,9564,977,8794,977,8774,971,2194,895,119

4,875,4484,819,5934,720,6384,719,6824,633,5564,630,4984,522,0804,520,2884,512,4994,453,5074,430,984

D 476,629D 457,891D 368,187D 375,963D 309,457D 372,871D 361,771D 356,951D 309,457D 308,872D 308,871