Operator’s Manual
Model 21000 Model 21100
Fource
Fource
BRIGGSandSTRATTON.com
ECopyright Briggs & Stratton Corporation
Milwaukee, Wisconsin 53201 U.S.A.
Form No. 277097-3/07
Printed in U.S.A.
Safety References
The safety alert symbol is used to identify safety
information about hazards that can result in personal
injury. A signal word (DANGER, WARNING, or
CAUTION) is used with the alert symbol to indicate the
likelihood and the potential severity of injury. In addition,
a hazard symbol may be used to represent the type of
hazard.
SYMBOLS ASSOCIATED
WITH THIS ENGINE:
Fire
Explosion
Read
Manual
Oil
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.
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.
Kickback
Hot Surface
Toxic F u mes
Moving Parts
Shock
Primer
Fuel
Fuel Shutoff
On Off
Choke
Stop
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.
Safety References 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents
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. . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
WARNING
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.
CAUTION
This engine is shipped from Briggs & Stratton
without oil. If you start the engine without oil,
the engine will be damaged beyond repair and
will not be covered under warranty.
Features
1. Carburetor
2. Stop Switch location, if equipped/stop wires
3. Rope Handle
4. Fuel Fill
5. Air Cleaner
6. Choke
1
2
7. Spark Plug
8. Primer Bulb
9. Engine Identification
Model XXXXX Type XXXXXX Code
XXXXXXXX
10. Oil Fill/Dipstick
6
5
4
3
6
8
9
7
10
3
Safety
CAUTION
This engine is shipped from Briggs & Stratton
without oil. If you start the engine without oil,
the engine will be damaged beyond repair and
will not be covered under warranty.
WARNING
Gasoline and its vapors are extremely
flammable and explosive.
Fire or explosion can cause severe burns
or death.
WHEN ADDING FUEL
• Turn engine OFF and let engine cool at least 2
minutes before 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
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
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, impellers, 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
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
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 cool
before touching.
• Remove accumulated debris 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.
4
Starting
This engine is shipped WITHOUT oil. See section on oil
for recommendations, capacity, and filling details.
Full Choke
Half Choke
Off Position
Choke Lever
Primer Bulb
1. Set unit on flat surface and push primer bulb 15
times FOR A NEW ENGINE. Push primer bulb 8
times for all future starts.
2. Move red choke lever to the FULL CHOKE
position.
3. Not all applications have a throttle. If the
equipment has this a throttle, squeeze throttle
trigger. If the engine is still warm from a previous
start, do not squeeze throttle.
CAUTION
Operating engine at an excessive speed without
proper engine loading will cause damage. DO NOT
operate a string trimmer with a line shorter than
10’’ diameter for extended periods.
Typical
Throttle
Trigger
4. Pull starter handle sharply until engine runs.
5. Wait a maximum of 10 seconds, then move
choke lever to HALF CHOKE position.
6. Run the engine at HALF CHOKE for 20 seconds
or until unit accelerates smoothly. Move choke to
OFF position.
7. Wait a minimum of 20 seconds, then release
throttle trigger.
WARNING
The manufacturer of the equipment on which
this engine is installed specifies top speed at
which the engine will be operated. DO NOT
EXCEED this speed.
5
Stopping
WARNING
Do not stop engine by moving choke control to
CHOKE. Backfire, fire or engine damage could
occur.
1. Depress stop switch located on the engine or
equipment to stop.
Need Assistance?
Go to www.briggsandstratton.com or call 1-800-233-3723
6
Troubleshooting
CAUTION
Engine will not start
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 to
product spark
• Remove spark plug and clean it. Check
the spacing on the electrode and set the
gap to the correct dimension. See
Maintenance Section. If plug is damaged,
replace with a new spark plug.
• Ensure the spark plug is installed and wire
is connected.
This engine is shipped from Briggs & Stratton
without oil. If you start the engine without oil, the
engine will be damaged beyond repair and will
not be covered under warranty.
WARNING
• Ensure fuel cap is in place before
starting engine
• Turn engine OFF and let engine
cool at least 2 minutes before
removing fuel cap.
• Check fuel lines, tank, cap, and
fittings frequently for cracks or
leaks. Replace if necessary.
• Do not crank engine with spark plug
removed.
Engine is smoking or running rough
• There maybe slight oil accumulation in the
crankcase 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.
CAUTION
If engine is tipped to transport equipment, to
remove debris, to drain oil, etc., keep the spark
plug side of engine up.
7
Oil
Capacity
Engine 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) or
Briggs & Stratton Synthetic Oil, Part Number
100074.
• Do not use special additives.
• Choose a viscosity according to the table below.
SAE Viscosity Grades
**
*
-20 0 20 40 60 80 100
°F
-30 -20 -10 0 10 20 30 40
°C
STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
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.
32
CAUTION
Adding Oil
CAUTION
KEEP ENGINE LEVEL
Engine must be level, with oil fill facing up, to
check oil. If engine is not level, dipstick reading will
not be accurate. This will lead to possible over or
under filling causing damage to the engine.
• 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 oil
measure cup to pour oil slowly into engine.
Do not over fill.
CAUTION
* Synthetic oil must be used when operating engine
under 40_ F (4_ C) or engine damage will occur.
CAUTION
** Use of SAE 30 oil below 50° F (10° C) will result in hard
starting and possible engine damage due to inadequate
lubrication.
Oil Fill
2. Tighten dipstick down.
3. To check oil level, remove and wipe the dipstick
clean with cloth. Tighten dipstick down. Remove
and check oil level.
Dipstick
4. Verify FULL level of oil by presence of oil in hole
on dipstick, or by measure line.
Full
5. If needed, add only half ounce of oil at a time to
bring it to FULL. Re-check level.
8
Changing Oil & Checking Level
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.
WARNING
• Disconnect spark plug
wire and keep it away
from spark plug.
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 not
over fill.
Engine holds approximately 3 oz (90 ml).
Note:
4. To re-check oil level, remove dipstick and wipe
clean with cloth. Tighten dipstick down. Remove
and check oil level.
5. Replace dipstick tightly, and reconnect spark plug
wire before starting engine.
CAUTION
Used oil is a hazardous waste product. Dispose
of used oil properly. Do not discard with
household waste. Check with your local
authorities, service center, or dealer for safe
disposal/recycling facilities.
Oil
Fill
9
Fuel
Type of Fuel to Use
• Use clean, fresh, regular unleaded gasoline with a
minimum of 85 octane. Fresh fuel prevents gum
from forming in the fuel system or on essential
carburetor parts. Purchase fuel in quantity that can
be used within 30 days.
• For engine protection use Briggs & Stratton
Gasoline Additive available from your Authorized
Briggs & 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 (Engine
Modifications).
Adding Fuel
1. Turn engine OFF and let engine cool at least 2
minutes before removing gas cap.
2. Tilt engine at angle shown to properly fill fuel
tank.
CAUTION
Some fuels, called oxygenated or reformulated
fuels, are fuels 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.
Fuel Fill
3. Remove cap and add fuel until level is
approximately 1’’ below top of fuel tank neck. Be
careful not to over fill.
4. Replace cap before starting.
10
Specifications
CAUTION
All the components used to build this engine
assembly must remain in place for the proper
operation of this engine.
We recommend that you use an authorized Briggs &
Stratton Service Dealer for all maintenance and service
of the engine and engine parts. Use only genuine
Briggs & Stratton parts.
GENERAL INFORMATION
This is a single cylinder, air-cooled engine. It is a low
emissions engine.
In the state of California, Model 21000 and 21100 engines
are certified by the California Air Resources Board to
meet emissions standards for 50 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.
Model 21000
Bore 1.575 in. (40 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 1.065 in. (27 mm). . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 2.074 cu. in. (34 cc). . . . . . . . . . . . . . . . . .
Model 21100
Bore 1.575 in. (40 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke 1.250 in. (31.75 mm). . . . . . . . . . . . . . . . . . . . . . .
Displacement 2.44 cu. in. (40 cc). . . . . . . . . . . . . . . . . . .
For practical operation, the horsepower loading should not
Note:
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 10°
F (5.6° C) above 77° F (25° C).
Tune-Up Specifications
Armature 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 1/4
in. (6 mm) past top dead center (check when engine is
cold). 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 Number
To get replacement parts or technical assistance in the
future write your engine Model, Type and Code number
along with the date of purchase here. These numbers
are located on your engine. For the location, see
page 3, Engine Features.
Model
Type
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 obtained and corrected in
accordance with SAE J1995 (Revision 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-engine 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 engine 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 including, 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.
Emission Information
Engines that are certified to meet the California Air Resources
Board (CARB) Tier 2 Emission Standards must display
information regarding the Emissions Durability Period and the
Air Index. Briggs & Stratton makes this information available to
the consumer on our emission 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 emission compliant for 50
hours of actual engine running time.
Intermediate: Engine is certified to be emission compliant for
125 hours of actual engine running time.
Extended: Engine is certified to be emission compliant for 300
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.
Code
For handheld engines:
Category C = 50 hours
Category B = 125 hours
Category A = 300 hours
11
Maintenance
Regular maintenance will improve the performance and
extend 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 Control
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.
WARNING
Unintentional sparking can result in
fire or electric shock.
Fire or explosion can cause severe
burns or death.
Unintentional start-up can result in
entanglement, traumatic
amputation, or laceration.
• Disconnect spark plug wire and keep it away
from spark plug.
• Disconnect battery at negative terminal (only
engines with electric start).
• Use only correct tools.
During maintenance or repairs:
• Do not strike the flywheel with a hammer or
hard object because the flywheel may later
shatter during operation.
• Do not tamper with governor spring, links or
other parts to increase engine speed.
When testing for spark:
• Use approved spark plug tester.
• Do not check for spark with spark plug
removed.
Follow the instructions and schedules indicated below.
Task
Perform task at hourly
or 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.
12
Air Cleaner
Check and clean the intake chamber for dirt. If the foam
air filter is dirty and worn, replace with clean filter.
1. Push cover tab to release cover, then pull cover
away from engine to service air filter.
Clean intake
area
Cover
Tab
CAUTION
Do not use pressurized air or solvents to clean
cartridge. Pressurized air can damage cartridge;
solvents will dissolve cartridge.
WARNING
Ensure air cleaner, retainer, and cover are
properly installed before starting engine.
Foam Air Fil-
ter
Foam Air Filter
To clean wash in liquid detergent and water. Squeeze
dry in a clean cloth. Allow to dry thoroughly. Dip foam
air filter in clean engine oil, then squeeze out excess oil
in clean cloth. Engine will smoke if too much oil is left
on the filter.
13
Cleaning Debris
Daily or before every use, clean accumulated debris
from engine. Keep linkage, spring and controls clean.
Keep area behind muffler free of any combustible
debris.
Spark Plug
Check the spark plug every 50 hours. Replace the
spark plug if upon inspection the electrode is burned or
worn. Ensure the spark plug is clean. Check the gap
with a feeler gauge and reset if necessary. Use only
Briggs & Stratton Spark Tester (part number 19368) to
check 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 check
the gap on the spark plug.
CAUTION
Do not use water to clean engine parts. Water
could contaminate fuel system. Use a brush or dry
cloth.
WARNING
Engine parts should be kept clean to reduce the risk
of overheating and ignition of accumulated debris.
WARNING
Ensure air cleaner, retainer, and cover are
properly installed before starting engine.
Note: In some areas, local law requires using a resistor
spark plug to suppress ignition signals. If this engine
was originally equipped with a resistor spark plug, use
same type for replacement.
Fuel System
WARNING
Replacement parts for fuel system (cap, hoses,
tanks, filters, etc.) must be the original parts, otherwise fire can occur.
14
Storage
The following precautions should be taken if storing
your trimmer unit for a period exceeding 30 days, or for
seasonal 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 into
proper receptacle. If fuel is to be disposed, please
refer to local rules for proper disposal.
• Remove spark plug. Place 1 teaspoon or 5 ml. of oil
into spark plug hole.
• Pull starter rope slowly 8-10 times to properly coat
the cylinder bore and piston for storage. Replace
spark plug and tighten. Any residual oil may burn off
in subsequent starts. This may result in white
smoke emission from muffler.
• This trimmer may be stored in a variety of positions.
It is best to store in horizontal position with the
spark plug up. Do not store or transport with the
spark plug down.
Storing or transporting with the spark plug down
Note:
will 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 (see
maintenance schedule) before starting engine.
WARNING
When storing fuel or equipment with fuel in
tank:
• Store away from furnaces, stoves, water heaters,
or other appliances that have a pilot light or other
ignition source because they can ignite vapors.
When Transporting Equipment:
• Transport with fuel tank EMPTY or with
fuel shut-off valve OFF.
15
Service
See an Authorized Briggs & Stratton Service Dealer for
all your engine service needs. Each one carries a stock
of Genuine Briggs & Stratton Parts and is equipped
with special service tools. Trained mechanics assure
expert repair service on all Briggs & Stratton engines.
Only dealers advertising as “Authorized Briggs &
Stratton” are required to meet Briggs &
Stratton standards.
When you purchase equipment
powered by Briggs & Stratton, you are
assured of highly skilled, reliable
engine service at more than 30,000
Authorized Service Dealers worldwide,
including more than 6,000 Master
Service Technicians. Look for these
signs wherever Briggs & Stratton
service is offered.
You may find the nearest Authorized Service Dealer
in our dealer locator map at
www.briggsandstratton.com, or by
calling 1-800-233-3723
PARTIAL LIST OF
GENUINE BRIGGS & STRATTON
PARTS
PART 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 common
specifications and detailed information covering
adjustment, tune-up and repair of Briggs & Stratton
single cylinder, 4 cycle engines. It is available for
purchase from an Authorized Briggs & Stratton Service
Dealer or you can order it from
www.briggsandstratton.com.
16
Warranty Information
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 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
California, 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 improper 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 emissions control parts defects for a period of two years, subject to provisions set
forth 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 for
the performance of the required maintenance listed in your
Operating and Maintenance Instructions. B&S recommends
that you retain all your receipts covering maintenance 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 maintenance.
As the small off-road engine owner, you should however be
aware that B&S may deny your 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 exceed 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 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&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
purchased.
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 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
diagnostic 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
Authorized 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. Warranty
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
replacement as required maintenance or which is
scheduled only for regular inspection to the effect of
“repair or replace 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 defined in
the B&S Operating and Maintenance Instructions.
6. Consequential Coverage
Coverage hereunder shall extend to the failure of any
engine components caused by the failure of any
Warranted Part still under warranty.
17
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 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 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 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.
3. Leaking carburetors, clogged fuel pipes, sticking
valves, or other damage, caused by using
contaminated or stale fuel.
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 (check and refill when necessary
and change at recommended intervals.) 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. (At
recommended intervals, clean and and/or replace
the filter as stated in the Operator’s Manual.
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 or dirty
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
material and/or workmanship only
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.)
, and not
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. Clean engine debris
at recommended intervals as stated in the
Operator’s Manual.
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, improper attachment of
equipment to engine crankshaft, over-speeding or
other abuse in operation.
9. A bent or broken crankshaft, caused by striking a
solid object with the cutter blade of a rotary lawn
mower, 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, valve
guides, or burned starter motor windings, caused
by the use of alternate fuels such as, liquified
petroleum, natural gas, altered gasolines, etc.
Warranty service is available only through
authorized service dealers by Briggs & Stratton
Corporation. Locate your nearest Authorized
Service Dealer in our dealer locator map on
www.briggsandstratton.com or by calling
1-800-233-3723, or as listed in the ‘Yellow Pagest’.
18
BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICY
Effective 12/06
Briggs & Stratton Corporation will repair or replace, free of charge, any part(s) of the engine that is defective
LIMITED WARRANTY
in material or workmanship or both. Transportation charges on product submitted for repair or replacement
under this warranty must be borne by purchaser. This warranty is effective 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 Pro 2 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 engine 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.
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
6,542,074
6,520,141
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
6,347,614
6,325,036
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
6,202,616
6,145,487
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
6,014,808
6,012,420
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
5,809,958
5,803,035
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
5,497,679
5,548,955
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
5,265,700
5,243,878
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
5,150,674
5,138,996
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
4,895,119
4,875,448
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
4,430,984
D 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
19
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