Briggs & Stratton Engine 100000 Operating And Maintenance Manual

							Operating & Maintenance Instructions
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BRIGGSandSTRATTON.com Copyright Briggs & Stratton Corporation
Milwaukee, Wisconsin 53201 U.S.A.Form No. MS-3734-3/07
Printed in U.S.A.
Model 100000DOV 
Extended Life SeriesSeries 700 
						

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Note: (This note applies only to engines used in the U.S.A.) Maintenance, replacement or repair of the emission control devices and systems may be performed
by any nonroad engine repair establishment or individual. However, to obtain no charge repairs under the terms and provisions of the Briggs & Stratton
warranty statement, any service or emission control part repair or replacement must be performed by a factory authorized dealer.
ENGINE COMPONENTSFig. 1
1Oil fill and dipstick
2Rewind rope handle
3Fuel fill cap
4Air cleaner
5Speed control lever, if equipped
6Oil drain plug (located at the bottom of engine)
7Primer bulb
8Spark plug
9Muffler
10Engine Model / Type / Code number
Record your engine
 Model, Type and Code numbers here for future use.
Record your date of purchase here for future use.
GENERAL INFORMATION
In the state of California, the Model 100000 engines covered in this manual are certified by
the California Air Resources Board to meet emissions standards for 125 hours. Such
certification does not grant the purchaser, owner or operator of this engine any additional
warranties with respect to the performance or operational life of this engine. This engine is
warranted solely according to the product and emissions warranties stated elsewhere in this
manual.
Note:For practical operation, the horsepower loading should not exceed 85% of rated horse‐
power. 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). It will operate satisfactorily at an angle up to 15°.
Refer to the equipment operator manual for safe allowable operating limits on slopes.
SAFETY SPECIFICATIONS
This manual contains safety information to make you aware of
the hazards and risks associated with engines, and how to avoid
them. Because Briggs & Stratton does not necessarily know what equipment this engine
will power, it is important that you read and understand these instructions and the
instructions for the equipment this engine powers.
The engine exhaust from this product contains chemicals known to the State of
California to cause cancer, birth defects, or other reproductive harm.
WARNING
WARNING
Briggs & Stratton does not approve or authorize the use of these engines on 3‐wheel All
Terrain Vehicles (ATVs), motor bikes, fun/recreational go‐karts, aircraft products or
vehicles intended for use in competitive events. Use of these engines in such
applications could result in property damage, serious injury (including paralysis), or
even death.
Symbols Associated with this Engine
Explosion
Toxic Fumes Shock
Hot Surface KickbackFire
Moving Parts
On Off Read Operator's Manual
Stop
Fuel
Open ChokeSafety Alert
Oil
Full / Closed Choke
Slow
Fast
Hazardous Chemical
A signal word (DANGER, WARNING, or CAUTION) is used with the alert symbol to indicate
the likelihood and the potential severity of injury. In addition, a hazard symbol may be used
to represent the type of hazard.
DANGER indicates 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 used without the alert symbol, indicates a situation that could
result in damage to the engine.
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 if doors or windows are open.
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 not start engine.
•Do not use pressurized starting fluids because vapors are flammable.
WARNING 
						

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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 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 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, set choke to OPEN/RUN position, place throttle in FAST and crank
until engine starts.
WHEN OPERATING EQUIPMENT
•Do not choke carburetor to stop engine.
WHEN TRANSPORTING EQUIPMENT
•Transport with fuel tank EMPTY.
WHEN STORING GASOLINE OR EQUIPMENT WITH FUEL IN TANK
•Store away from furnaces, stoves, water heaters or other appliances that have pilot
light or other ignition source because they can ignite gasoline vapors.
WARNING
Rapid retraction of starter cord (kickback) will pull hand and arm
toward engine faster than you can let go.
Broken bones, fractures, bruises or sprains could result.
•When starting engine, pull cord slowly until resistance is felt, then pull rapidly.
•Direct coupled equipment components such as, but not limited to, blades,
impellors, pulleys, sprockets, etc., must be securely attached.
WARNING
Rotating parts can contact or entangle hands, feet, hair, clothing, or
accessories.
Traumatic amputation or severe laceration 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.
WARNING
Unintentional sparking can result in fire or electric shock.
Unintentional start‐up can result in entanglement, traumatic amputation, or
laceration.
BEFORE PERFORMING ADJUSTMENTS OR REPAIRS
•Disconnect spark plug wire and keep it away from spark plug.
WHEN TESTING FOR SPARK
•Use approved spark plug tester.
•Do not check for spark with spark plug removed.
WARNING
•Allow muffler, engine cylinder and fins to cool before touching.
•Remove accumulated combustibles from muffler area and cylinder area.
•Install and maintain in working order a spark arrester before using equipment on
forest‐covered, grass‐covered, brush‐covered unimproved land. The state of
California requires this (Section 4442 of the California Public Resources Code).
Other states may have similar laws. Federal laws apply on federal land.
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.
OIL RECOMMENDATIONS
CAUTION: 
Engine shipped from Briggs & Stratton without oil. Before starting engine, fill with oil. Do not
over‐fill.
•Use a high quality motor oil.
•Do not use special additives. Do not mix oil with gasoline.
•Choose a viscosity according to average temperature such as SAE 30 weight oil, see
chart below.
°C‐30°F‐20 020 40 60 80 100
‐20 ‐10 0 10 20 30 40
*
**
32
CAUTION:
* 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) will result in higher than normal oil consumption. When using a
multi‐viscosity oil, check oil level more frequently.
** 30 weight oil, if used below 40° F (4° C), will result in hard starting and possible
engine bore damage due to inadequate lubrication.
OIL CAPACITY
•Engine holds approximately 0.61 liter (20 oz).
Fig. 2  OIL PROCEDURE
•Check oil level before every use and after every eight (8) hours of continual use.
1. Place engine level and clean around oil fill .
2. Remove dipstick, wipe with clean cloth , insert and tighten down again . Remove
dipstick and check oil level. Oil should be at FULL mark . If oil is required, add slowly .
Recheck oil level on dipstick .
3.Do not over fill. Overfilling with oil may cause smoking, hard starting, spark plug fouling,
and oil saturation of air filter. Drain out excess, if oil level is over FULL mark on dipstick.
4. Tighten dipstick firmly before starting engine.
FUEL RECOMMENDATIONS
Use clean, fresh, lead‐free gasoline with a minimum of 85 octane. Leaded gasoline may be
used if it is commercially available and if unleaded is unavailable.
In U.S.A. leaded gasoline may not be used. Some fuels, called oxygenated or reformulated
gasolines, are gasolines blended with alcohols or ethers. Excessive amounts of these
blends can damage the fuel system or cause performance problems. If any undesirable
operating symptoms occur, use gasoline with a lower percentage of alcohol or ether.
This engine is certified to operate on gasoline. Exhaust Emission Control System: EM
(Engine Modifications).
Do not use gasoline which contains Methanol. Do not mix oil with gasoline.
Before refueling, allow engine to cool 2 minutes.
WARNING
Fig. 3ADDING FUEL
Clean around fuel fill  before removing cap. Fill tank to approximately 1 inch below top of
neck  to allow for fuel expansion. Be careful not to overfill. 
						

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Fig. 4Fresh Start FUEL CAP
Your engine may be equipped with a Fresh Start fuel cap .
Fresh Start fuel cap is designed to hold a cartridge  which contains fuel stabilizer. Fuel
stabilizer is essential in engines stored over 30 days to prevent gum from forming in fuel
system or on essential carburetor parts.
1. Place silver foil seal end of cartridge into fuel cap. 
2. Press to “snap” cartridge into place. 
3. Remove the white tab to expose membrane. 
4. Reinstall fuel cap on engine fuel tank. 
5. Check periodically - if empty, remove and replace.
6. Store unopened cartridges in a cool, dry, well‐ventilated area. Keep open cartridge in fuel
cap, and fuel cap closed on fuel tank when not in use.
•IF SWALLOWED, call physician immediately. Do not induce vomiting. If inhaled,
remove to fresh air. In case of eye or skin contact, flush with water for 15 minutes.
•Store unopened cartridges in a cool, dry, well‐ventilated area. Keep open cartridge
in fuel cap, and fuel cap closed on fuel tank when not in use.
** Fuel stabilizer contains: 2,6‐di‐tert‐butylphenol (128‐39‐2) and aliphatic petroleum
distillate (64742‐47‐8).In case of emergency, contact a physician immediately and call 1‐800‐424‐9300 for
material safety information.
DANGER
Fresh Start® fuel cap cartridge contents are HARMFUL OR FATAL IF
SWALLOWED.
Avoid contact to eyes, skin, or clothing. Do not take internally. Avoid
breathing the mist or vapor. Overexposure to eyes or skin can cause
irritation.
KEEP STABILIZER OUT OF THE REACH OF CHILDREN. Fuel stabilizer is
a hazardous chemical.**
BEFORE STARTING
Always keep hands and feet clear of equipment moving parts.
WARNING
Do not use a pressurized starting fluid. Vapors are flammable.
WARNING
•Start, store and fuel equipment in level position.
•Check oil level.
Engine models vary. There are three variations to choose before starting your engine. How
your engine is equipped will determine which steps to follow. The variations are ReadyStart
where the engine has only a throttle control, Primer equipped which means your engine
does not have a choke control, and Standard starting where your engine is equipped with
both primer and choke control. Know your engine before starting.
 EQUIPPED ENGINESFig. 5
1. Move throttle control to FAST  position. (if equipped)
2. See STARTING section.
PRIMER EQUIPPED ENGINE
1. Move throttle control to FAST  position.
2. Locate the primer bulb  and push firmly 5 times the FIRST TIME you start a new engine.
For all future starts push primer bulb 3 times. Pressing the primer too many times can
flood the engine with fuel, and the engine may not start.
Note:If engine stopped because it ran out of fuel, refuel engine and push primer bulb 3 times
.
Priming is usually unnecessary when restarting a warm engine. However, cool weather may re‐
quire priming to be repeated.
3. See STARTING section.
Fig. 6STANDARD ENGINE
1. Open fuel shut‐off valve1/4 turn, if equipped. 
2. Move throttle control to FAST or START position, if equipped. 
3. Move choke to RUN position, if equipment has this control.4. Locate the primer bulb  and push firmly 5 times the FIRST TIME you start a new engine.
For all future starts push primer bulb 3 times. Pressing the primer too many times can
flood the engine with fuel, and the engine may not start.
Note:If engine stopped because it ran out of fuel, refuel engine and push primer bulb 3 times
.
Priming is usually unnecessary when restarting a warm engine. However, cool weather may re‐
quire priming to be repeated.
5. See STARTING section.
STARTINGFig. 7
REWIND STARTER
1. Close safety brake control handle  on equipment with this feature. Slowly pull cord 
until you feel resistance, then pull quickly. Repeat if necessary. When engine starts,
operate with throttle in FAST position.
2. If engine does not start after 3 pulls, push primer bulb 3 times and pull starter again.
3. Repeat if necessary with choke (if equipped) in RUN position and throttle in FAST.
4. When engine starts, operate in FAST position.
ELECTRIC START, IF EQUIPPED
1. If equipment manufacturer has supplied battery, charge it before trying to start engine, as
equipment manufacturer recommends.
2. Turn key to START.
3. Repeat if necessary with choke (if equipped) in RUN position and throttle in FAST.
4. When engine starts, operate in FAST position.
Note:Use short starting cycles (15 seconds/ minute) to prolong starter life. Extended cranking
can damage starter motor.
STOPPING
Engine models vary. If equipped, follow one or more of the steps listed.
1. Release safety brake control handle.
2. Move throttle control to STOP.
3. Push stop switch to OFF.
4. Close fuel shut‐off valve.
CAUTION: DO NOT move choke control to CHOKE position to stop engine. Backfire or
engine damage may occur.
MAINTENANCEFig. 8
Regular maintenance improves performance and extends engine life. More frequent service
is required when operating in adverse conditions.
To prevent accidental starting, remove spark plug wire  and keep it away from spark
plug before servicing. Do not strike the flywheel with hammer or hard object. If done,
the flywheel may shatter during operation. Do not tamper with links or other parts to
increase engine speed.
WARNING
If engine must be tipped to transport equipment or to inspect or remove grass, keep
spark plug side of engine UP . Start, store and fuel equipment in level position.
CAUTION 
						

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Follow the hourly or calendar intervals, whichever occur first. More frequent
service is required when operating in adverse conditions noted below.
First 5 Hours
Change oil
Every 5 Hours or Daily
Check oil level
Clean around muffler
Clean around finger guard
Every 25 Hours or Every Season
Change oil if operating under heavy load or high ambient temperature
Service air cleaner Oil Foam element *
Every 50 Hours or Every Season
Change oil
Inspect spark arrester, if equipped
Every 100 Hours or Every Season
Replace spark plug
Clean cooling system*
*Clean more often under dusty conditions, or when airborne debris is present or after
prolonged operation cutting tall, dry grass.
CHANGING OILFig. 9
Change oil after first 5 hours of operation, then every 50 hours or every season. Change oil
every 25 hours when operating the engine under heavy load or in high temperatures.
Change oil while engine is warm.
Before tipping engine or equipment to drain oil, drain fuel from tank by running
engine until fuel tank is empty.
WARNING
1. Run engine until it runs out of fuel. Otherwise, fuel can leak out, creating a fire/explosion
hazard, when you tip engine in Step 4.
2. With engine OFF but still warm remove dipstick.
3. Top oil drain: 
 Keep spark plug side up. On bottom oil drain: By removing drain plug 
with a ratchet and square extension , oil can be drained from engine bottom.Replace drain plug.
Note:Top oil drain is recommended method, however oil can drain from bottom as shown.
4. Place engine level. Add new oil. Oil capacity of engine is approximately 0.61l (20 oz). Fill
to FULL mark on dipstick. DO NOT OVERFILL. Replace dipstick.
5. Reconnect spark plug wire before starting.
CAUTION: Used oil is a hazardous waste product. Dispose of used oil properly.
AIR CLEANER MAINTENANCEFig. 10
All engines have an air cleaner cartridge. Check and clean the cartridge after every 25 hours
of use, more often under dusty conditions. Replace the cartridge after every 100 hours of
use or before each season.
1. Loosen screws and lift cover off. 

2. Carefully remove air cleaner cartridge , preventing debris from falling into carburetor
area 
 or air vent opening .
3. Do not use water or solvents to clean cartridge. Simply tap gently to release loose dirt from
cartridge. Replace if worn or very dirty.
CAUTION: Do not use pressurized air or solvents to clean cartridge. Pressurized air will
damage cartridge, solvents will dissolve cartridge.
4. Install new or cleaned filter with the bottom cartridge sealing air vent on base. Replace
cover onto base, and tighten screws.
SPARK PLUG MAINTENANCEFig. 11
Check the spark plug every 100 hours or every season, whichever occurs first. Replace the
spark plug if upon inspection the electrodes  are burned or worn. Ensure the spark plug is
clean. Check the gap
  with a feeler gage  and reset to 0.51mm or 0.020 in. if
necessary.
Note: In some areas, local law requires using a resistor spark plug to suppress ignition signals.
If this engine was originally equipped with resistor spark plug, use same type of spark plug for
replacement.DO NOT attempt to start engine with spark plug removed. Fuel can ignite and cause a
fire or explosion.
WARNING
CLEANING DEBRISFig. 12
Daily or before every use, clean grass, chaff, or accumulated debris from engine. Keep
linkage, s‐ring and controls clean. Keep area around and behind muffler free of any
combustible debris. Remove spark arrester. Keeping engine clean allows air movement
around engine.
Do not spray engine with water to clean because water could contaminate fuel. Clean with a
brush or compressed air.
Clean cooling system
To prevent overheating and engine damage, we recommend that you have an authorized
Briggs & Stratton Service dealer clean the air cooling system per the maintenance intervals.
STORAGE
Engines stored over 30 days need to be protected or drained of fuel to prevent gum from
forming in fuel system or on essential carburetor parts. For engine protection, use a Fresh
Start fuel cap. Fuel containers for storage use Fuel Stabilizer. Fresh Start fuel cap cartridge
has enough stabilizer to keep fuel fresh up to 6 months.
If stabilizer is not used or if engine is operating on gasoline containing alcohol, e.g. gasohol,
remove all fuel from tank and run engine until it stops from lack of fuel.
1. Change oil.
2. Remove spark plug and pour about 15 ml (1/2 oz) of engine oil into cylinder. Replace
spark plug and crank slowly to distribute oil.
3. Clean chaff and debris from cylinder and cylinder head fins, under finger guard and
behind muffler.
4. When removing the unit from storage, only use fresh gasoline. Perform operation checks,
see maintenance schedule, before starting engine.
SERVICE
See an Authorized Briggs & Stratton Service Dealer. Each one carries a stock of Genuine
Briggs & Stratton Parts and is equipped with special service tools.
Need Assistance? Go to the website or call, 1‐800‐233‐3723, (U.S.A. and Canada) to hear
a menu of pre‐recorded messages offering engine maintenance information.
Air cleaner cartridge 792038. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Oil  100005 ‐or‐ 100028. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Fuel stabilizer (4.2 oz., 125 ml bottle)  5041. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Standard spark plug 692051. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Spark tester 19368. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Spark plug wrench 89838 (5023). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Oil pump kit  5056. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
(uses standard electric drill to remove oil from engine quickly)
To purchase, or view other products Briggs & Stratton has available, see an
Authorized Briggs & Stratton Service Dealer. Use our web site at
www.briggsandstratton.com to find a dealer nearest you, or check the
“Yellow Pages™”.
™
Walking fingers logo and “Yellow Pages” are registered
trademarks in various jurisdictions.
Insist on Genuine Briggs & Stratton replacement parts with our logo on the box and/or part.
Non‐original parts may not perform as well and may void your warranty.
TUNE‐UP SPECIFICATIONS
Armature air gap 0.15 - 0.35 mm (0.006 - 0.014 in.). . . . . . . . . . . . . . . . . . . . . . . . . . . 
Spark plug gap 0.51 mm (0.020 in.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Model 100000Bore 64.00 mm (2.52 in.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Stroke 49.99 mm (1.968 in.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Displacement 161 cc (9.82 cu in.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Note: For practical operation, the horsepower loading should not exceed 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 105 F (5.65 C) above 775 F (255 C). It will operate satisfactorily at an
angle up to 155. Refer to the equipment operator manual for safe allowable operating limits
on slopes. 
						

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California, United States and Canada Emissions Con‐
trol Defects Warranty Statement
The California Air Resources Board (CARB), U.S. EPA and
B&S are pleased to explain the Emissions Control System
Warranty on your small off‐road engine (SORE). In Califor‐
nia, new small off‐road engines model year 2006 and later
must be designed, built and equipped to meet the State's
stringent anti‐smog standards. Elsewhere in the United
States, new non‐road, spark‐ignition engines certified for
model year 1997 and later must meet similar standards set
forth by the U.S. EPA. B&S must warrant the emissions
control system on your engine for the periods of time listed
below, provided there has been no abuse, neglect or im‐
proper maintenance of your small off‐road engine.
Your emissions control system includes parts such as the
carburetor, air cleaner, ignition system, fuel line, muffler
and catalytic converter. Also included may be connectors
and other emissions related assemblies.
Where a warrantable condition exists, B&S will repair
your small 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 emis‐
sions control parts defects for a period of two years, sub‐
ject to provisions set forth below. If any covered part on
your engine is defective, the part will be repaired or re‐
placed by B&S.
Owner's Warranty Responsibilities
As the small off‐road engine owner, you are responsible
for the performance of the required maintenance listed in
your Operating and Maintenance Instructions. B&S rec‐
ommends that you retain all your receipts covering main‐
tenance on your small off‐road engine, but B&S cannot
deny warranty solely for the lack of receipts or for your
failure to ensure the performance of all scheduled main‐
tenance.
As the small off‐road engine owner, you should however
be aware that B&S may deny you warranty coverage if
your small off‐road engine or a part has failed due to
abuse, neglect, improper maintenance or unapproved
modifications.
You are responsible for presenting your small off‐road
engine to an Authorized B&S Service Dealer as soon as
a problem exists. The undisputed warranty repairs should
be completed in a reasonable amount of time, not to ex‐
ceed 30 days.
If you have any questions regarding your warranty rights
and responsibilities, you should contact a B&S Service
Representative at 1‐414‐259‐5262.
The emissions warranty is a defects warranty. Defects
are judged on normal engine performance. The warranty
is not related to an in‐use emissions test.
Briggs & 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 following are specific provisions relative to your Emis‐
sions Control Defects Warranty Coverage. It is in addition
to the B&S engine warranty for non‐regulated engines
found in the Operating and Maintenance Instructions.
1. Warranted Parts
Coverage under this warranty extends only to the parts
listed below (the emissions control systems parts) to
the extent these parts were present on the engine pur‐
chased.
a. Fuel Metering System
•Cold start enrichment system (soft choke)
•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 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
purchaser that the Warranted Parts shall be free from
defects in materials and workmanship which caused
the failure of the Warranted Parts for a period of two
years from the date the engine is delivered to a retail
purchaser.
3. No Charge
Repair or replacement of any Warranted Part will be
performed at no charge to the owner, including diag‐
nostic labor which leads to the determination that a
Warranted Part is defective, if the diagnostic work is
performed at an Authorized B&S Service Dealer. For
emissions warranty service contact your nearest Autho‐
rized B&S Service Dealer as listed in the “Yellow
Pages” under “Engines, Gasoline,” “Gasoline Engines,”
“Lawn Mowers,” or similar category.
4. Claims and Coverage Exclusions
Warranty claims shall be filed in accordance with the
provisions of the B&S Engine Warranty Policy. Warran‐
ty coverage shall be excluded for failures of Warranted
Parts which are not original B&S parts or because of
abuse, neglect or improper maintenance as set forth in
the B&S Engine Warranty Policy. B&S is not liable to
cover failures of Warranted Parts caused by the use of
add‐on, non‐original, or modified parts.
5. Maintenance
Any Warranted Part which is not scheduled for replace‐
ment as required maintenance or which is scheduled
only for regular inspection to the effect of “repair or re‐
place as necessary” shall be warranted as to defects
for the warranty period. Any Warranted Part which is
scheduled for replacement as required maintenance
shall be warranted as to defects only for the period of
time up to the first scheduled replacement for that part.
Any replacement part that is equivalent in performance
and durability may be used in the performance of any
maintenance or repairs. The owner is responsible for
the performance of all required maintenance, as de‐
fined in the B&S Operating and Maintenance Instruc‐
tions.
6. Consequential Coverage
Coverage hereunder shall extend to the failure of any
engine components caused by the failure of any War‐
ranted Part still under warranty.
Briggs & Stratton Emissions Control
Defects Warranty Provisions
Engines that are certified to meet the California Air
Resources Board (CARB) Tier 2 Emissions Standards
must display information regarding the Emissions
Durability Period and the Air Index. Briggs & Stratton
makes this information available to the consumer on our
emissions labels. The engine emission label will indicate
certification information.
The Emissions Durability Period describes the number
of hours of actual running time for which the engine is
certified to be emissions compliant, assuming proper
maintenance in accordance with the Operating &
Maintenance Instructions. The following categories are
used:
Moderate:
Engine is certified to be emissions compliant for 125
hours of actual engine running time.
Intermediate:
Engine is certified to be emissions compliant for 250
hours of actual engine running time.
Extended:
Engine is certified to be emissions compliant for 500
hours of actual engine running time. For example, a
typical walk‐behind lawn mower is used 20 to 25 hours
per year. Therefore, the Emissions Durability Period of
an engine with an intermediate rating would equate to
10 to 12 years.
Certain Briggs & Stratton engines will be certified to meet
the United States Environmental Protection Agency
(USEPA) Phase 2 emission standards. For Phase 2
certified engines, the Emissions Compliance Period
referred to on the Emissions Compliance label indicates
the number of operating hours for which the engine has
been shown to meet Federal emission requirements.
For engines less than 225 cc displacement.
Category C = 125 hours
Category B = 250 hours
Category A = 500 hours
For engines of 225 cc or more displacement.
Category C = 250 hours
Category B = 500 hours
Category A = 1000 hours.
Look For Relevant Emissions 
Durability Period and 
Air Index Information On 
Your Engine Emissions Label
TECHNICAL INFORMATION
Engine Power Rating Information
The gross power rating for individual gas engine models is
labeled in accordance with SAE (Society of Automotive
Engineers) code J1940 (Small Engine Power & Torque
Rating Procedure), and rating performance has been ob‐
tained and corrected in accordance with SAE J1995 (Revi‐
sion 2002‐05). Torque values are derived at 3060 RPM;
horsepower values are derived at 3600 RPM. Actual gross
engine power will be lower and is affected by, among other
things, ambient operating conditions and engine‐to‐en‐
gine variability. Given both the wide array of products on
which engines are placed and the variety of environmental
issues applicable to operating the equipment, the gas en‐
gine will not develop the rated gross power when used in a
given piece of power equipment (actual “on‐site” or net
power). This difference is due to a variety of factors includ‐
ing, but not limited to, accessories (air cleaner, exhaust,
charging, cooling, carburetor, fuel pump, etc.), application
limitations, ambient operating conditions (temperature,
humidity, altitude), and engine‐to‐engine variability. Due to
manufacturing and capacity limitations, Briggs & Stratton
may substitute an engine of higher rated power for this
Series engine. 
						

							GB
6
BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICY
Effective 12/06
LIMITED WARRANTYBriggs & Stratton Corporation will repair or replace, free of charge, any part(s) of the engine that is defective in material or workmanship or
both. Transportation charges on parts submitted for repair or replacement under this warranty must be borne by purchaser. This warranty is ef‐
fective for and is subject to the time periods and conditions stated below. For warranty service, find the nearest Authorized Service Dealer in
our 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 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 INCIDENTAL OR CONSEQUENTIAL DAMAGES ARE EXCLUDED TO THE
EXTENT EXCLUSION IS PERMITTED BY LAW. Some states or countries do not allow limitations on how long an implied warranty lasts, and
some states or countries 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 specific legal rights and you may also have other rights which vary from state to state and country
to country.
WARRANTY TERMS **
Brand / Product Type Consumer Use Commercial Use
Vanguard   2 years 2 years
Extended Life Series, I / C, Intek I / C, Intek Pro2 years 1 year
Kerosene Fuel Operated Engines 1 year 90 days
All 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, and continues for the period of time stated in the table above. “Consumer use”
means personal residential household use by a retail consumer. “Commercial use” means all other uses, including use for commercial, income producing or rental purposes. Once an en‐
gine has experienced commercial use, it shall thereafter be considered as a commercial use engine for purposes of this warranty.
NO WARRANTY REGISTRATION IS NECESSARY TO OBTAIN WARRANTY ON BRIGGS & STRATTON PRODUCTS. SAVE YOUR PROOF OF PURCHASE RECEIPT. IF
YOU DO NOT PROVIDE PROOF OF THE INITIAL PURCHASE DATE AT THE TIME WARRANTY SERVICE IS REQUESTED, THE MANUFACTURING DATE OF THE
PRODUCT WILL BE USED TO DETERMINE THE WARRANTY PERIOD.
ABOUT YOUR ENGINE 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 han‐
dled 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
his 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 mis‐
understanding 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 service
and replacement to perform well. Warranty will not cover repair
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 applications, such as
tillers, pumps and rotary mowers, are very often used in dusty ordirty 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 be‐
cause of improper maintenance, is not covered by warranty.
This warranty covers engine related defective material and/‐
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 en‐
gine 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 Fuel Stabilizer, Part No. 5041.)
4. Parts which are scored or broken because an engine was
operated with insufficient or contaminated lubricating oil,
or an incorrect grade of lubricating oil. OIL GARD may not
shut down running engine. Engine damage may occur if
oil level is not properly maintained.
5. Repair or adjustment of associated parts or assemblies
such as clutches, transmissions, remote controls, etc.,
which are not manufactured by Briggs & Stratton.
6. Damage or wear to parts caused by dirt, which entered
the engine because of improper air cleaner maintenance,re‐assembly, or use of a non‐original air cleaner element
or cartridge.
7. Parts damaged by over‐speeding, or overheating caused
by grass, debris, or dirt, which plugs or clogs the cooling
fins, or flywheel area, or damage caused by operating the
engine in a confined area without sufficient ventilation.
8. Engine or equipment parts broken by excessive vibration
caused by a loose engine mounting, loose cutter blades,
unbalanced blades or loose or unbalanced impellers, im‐
proper attachment of equipment to engine crankshaft,
over‐speeding or other abuse in operation.
9. A bent or broken crankshaft, caused by striking a solid ob‐
ject with the cutter blade of a rotary lawn mower, or exces‐
sive 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, valve guides, or burned
starter motor windings, caused by the use of alternate
fuels such as, liquified petroleum, natural gas, altered
gasolines, etc.
Warranty is available only through service dealers which
have been authorized by Briggs & Stratton Corporation.
your nearest Authorized Service Dealer is listed in the “Yel‐
low Pages™” of your telephone directory under “Engines,
Gasoline” or “Gasoline Engines,” “Lawn Mowers,” or simi‐
lar category.
Briggs & Stratton Engines Are Made Under One Or More Of The Following Patents: Design D‐247,177 (Other Patents Pending)
6,691,683
6,647,942
6,622,683
6,615,787
6,617,725
6,603,227
6,595,897
6,595,176
6,584,964
6,557,833
6,542,0746,520,141
6,495,267
6,494,175
6,472,790
6,460,502
6,456,515
6,382,166
6,369,532
6,356,003
6,349,688
6,347,6146,325,036
6,311,663
6,284,123
6,263,852
6,260,529
6,242,828
6,239,709
6,237,555
6,230,678
6,213,083
6,202,6166,145,487
6,142,257
6,135,426
6,116,212
6,105,548
6,347,614
6,082,323
6,077,063
6,064,027
6,040,767
6,014,8086,012,420
5,992,367
5,904,124
5,894,715
5,887,678
5,852,951
5,843,345
5,823,153
5,819,513
5,813,384
5,809,9585,803,035
5,765,713
5,732,555
5,645,025
5,642,701
5,628352
5,619,845
5,606,948
5,606,851
5,605,130
5,497,6795,548,955
5,546,901
5,445,014
5,503,125
5,501,203
5,497,679
5,320,795
5,301,643
5,271,363
5,269,713
5,265,7005,243,878
5,235,943
5,234,038
5,228,487
5,197,426
5,197,425
5,197,422
5,191,864
5,188,069
5,186,142
5,150,6745,138,996
5,086,890
5,070,829
5,058,544
5,040,644
5,009,208
4,996,956
4,977,879
4,977,877
4,971,219
4,895,1194,875,448
4,819,593
4,720,638
4,719,682
4,633,556
4,630,498
4,522,080
4,520,288
4,512,499
4,453,507
4,430,984D 476,629
D 457,891
D 368,187
D 375,963
D 309,457
D 372,871
D 361,771
D 356,951
D 309,457
D 308,872
D 308,871 
						

							Fig. 9
Fig. 7
Fig. 5
Fig. 10





Fig. 6


Fig. 8




Fig. 11Fig. 12