Briggs Stratton VANGUARD 610000 User Manual

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Vanguard  
Vanguard  
Model 540000  
Model 610000  
E Copyright Briggs & Stratton Corporation  
Form No. MS-3854-3/07  
Printed in U.S.A.  
BRIGGSandSTRATTON.com  
Milwaukee, Wisconsin 53201 U.S.A.  
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.  
GB  
ENGINE COMPONENTS  
GENERAL INFORMATION  
The safety alert symbol ( )is used to identify safety  
information about hazards that can result in personal injury.  
This is a twin cylinder, overhead valve (OHV), air-cooled  
engine. It is a low emissions engine.  
Fig. 1  
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.  
In the state of California, Model 540000 and 610000  
engines are certified by the California Air Resources Board  
to meet emissions standards for 1000 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.  
1
Choke Control (if equipped)  
Breather/Breather tube  
Spark Plug (2 locations)  
2
3
4
DANGER indicates a hazard which, if not avoided,  
will result in death or serious injury.  
Engine Model Label  
Model xxxxxx Type xxxxxx Code xxxxxxxx  
WARNING indicates a hazard which, if not avoided,  
could result in death or serious injury.  
5
6
Oil Pressure Sensor  
Oil Filter  
Model 540000  
Bore . . . . . . . . . . . . . . . . . . . . . . . 85.5 mm (3.36 in.)  
Stroke . . . . . . . . . . . . . . . . . . . . . . . 78 mm (3.07 in.)  
Displacement . . . . . . . . . . . . . . . 895 cc (54.6 cu. in.)  
CAUTION indicates a hazard which, if not avoided,  
might result in minor or moderate injury.  
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
Oil Drain Plug (2 locations)  
Rotating Screen  
Cover − Carburetor  
Carburetor or LPG/NG Mixer  
Mechanical Fuel Pump  
Air Cleaner  
CAUTION, when used without the alert symbol,  
indicates a situation that could result in damage to  
the engine.  
Model 610000  
Bore . . . . . . . . . . . . . . . . . . . . . . . 85.5 mm (3.36 in.)  
Stroke . . . . . . . . . . . . . . . . . . . . . 86.5 mm (3.04 in.)  
Displacement . . . . . . . . . . . . . . . 993 cc (60.6 cu. in.)  
WARNING  
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 10° F (5.6° C) above 77° F (25° C).  
Engine will operate satisfactorily at an angle up to 25°.  
Oil Fill  
The engine exhaust from this product contains chemi-  
cals known to the State of California to cause cancer,  
birth defects, or other reproductive harm.  
Dipstick  
Regulator/Rectifier  
Starter Solenoid  
Starter  
Hazard Symbols and Meanings  
Exhaust System/Muffler  
Throttle control (2 locations)  
TUNE-UP SPECIFICATIONS  
Record your engine Model, Type and Code numbers here  
for future use.  
Armature air gap . . . 0.13 − 0.20 mm (0.005 − 0.008 in.)  
Spark plug gap . . . . . . . . . . . . . . . 0.76 mm (0.030 in.)  
Valve clearance with valve springs installed and piston 6 mm  
(1/4 in.) past top dead center (check when engine is cold).  
Intake . . . . . . . . . . . 0.10 − 0.15 mm (0.004 − 0.006 in.)  
Exhaust . . . . . . . . . 0.10 − 0.15 mm (0.004 − 0.006 in.)  
Explosion  
Moving Parts  
Kickback  
Fire  
Record your date of purchase here for future use.  
Toxic Fumes  
Hot Surface  
Shock  
TECHNICAL INFORMATION  
SAFETY SPECIFICATIONS  
Engine Power Rating Information  
Wear Eye Protection  
Frostbite  
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-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  
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.  
BEFORE OPERATING  
ENGINE  
International Hazard Symbols and Meanings  
Read entire Operating & Maintenance Instructions  
AND the instructions for the equipment this engine  
powers.*  
Failure to follow instructions could result in serious  
On Off  
Safety Alert  
Read Operator’s  
Manual  
injury or death.  
* Briggs & Stratton does not necessarily know what equip-  
ment this engine will power. For that reason, you should  
carefully read and understand the operating instructions  
for the equipment on which your engine is placed.  
Oil  
Stop  
Fuel  
Choke  
Fuel Shutoff  
THE OPERATING & MAINTENANCE  
INSTRUCTIONS CONTAIN SAFETY  
INFORMATION TO:  
WARNING  
Make you aware of hazards associated with engines  
Inform you of the risk of injury associated with those  
Starting engine creates sparking.  
hazards, and  
Tell you how to avoid or reduce the risk of injury.  
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.  
1
WARNING  
WARNING  
WARNING  
Running engines produce heat. Engine  
parts, especially muffler, become ex-  
tremely hot.  
Gaseous fuels are extremely  
flammable and readily form  
explosive air-vapor mixtures at  
ambient temperatures.  
Gasoline and its vapors are extremely  
flammable and explosive.  
Fire or explosion can cause severe  
burns or death.  
Severe thermal burns can occur on  
contact.  
IF YOU SMELL GAS:  
WHEN ADDING FUEL  
Combustible debris, such as leaves,  
grass, brush, etc. can catch fire.  
DO NOT start the engine.  
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 actuate any electrical switches.  
DO NOT use the phone in the vicinity.  
Evacuate the area.  
Allow muffler, engine cylinder and fins to cool  
before touching.  
Do not overfill fuel tank. Fill tank to approximately  
1-1/2 inches below top of neck to allow for fuel  
expansion.  
Remove accumulated combustibles from muffler  
area and cylinder area.  
Contact the gas supplier or fire department.  
REMEMBER:  
Install and maintain in working order a spark  
arrester before using equipment on forest-cov-  
ered, 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.  
Keep gasoline away from sparks, open flames,  
pilot lights, heat, and other ignition sources.  
LPG vapor is heavier than air and trends to collect  
in low areas. NG vapor is lighter than air and tends  
to collect in high areas. Both may travel to remote  
locations.  
Check fuel lines, tank, cap, and fittings frequently  
for cracks or leaks. Replace if necessary.  
WHEN STARTING ENGINE  
Keep all flames, sparks, pilot lights, and other  
ignition sources away from the area where the  
engine is operated or repaired.  
Make sure spark plug, muffler, fuel cap and air  
cleaner are in place.  
Do not crank engine with spark plug removed.  
DO NOT smoke when operating or repairing the  
engine.  
WARNING  
If fuel spills, wait until it evaporates before starting  
engine.  
DO NOT store gasoline or other flammable vapors  
or liquids in the vicinity of the engine.  
Unintentional sparking can result in  
fire or electric shock.  
If engine floods, set choke to OPEN/RUN position,  
place throttle in FAST and crank until engine starts.  
BEFORE doing any service work to the engine,  
shut off the gas supply.  
Unintentional start-up can result in  
entanglement, traumatic amputation,  
or laceration.  
WHEN OPERATING EQUIPMENT  
After initial installation or servicing, check for gas  
leaks. DO NOT use an open flame. Apply very  
soapy water or leak test solution with a brush and  
look for bubbles.  
Do not tip engine or equipment at angle which  
causes gasoline to spill.  
Do not choke carburetor to stop engine.  
BEFORE PERFORMING ADJUSTMENTS OR  
REPAIRS  
Keep the equipment and the area surrounding the  
engine free of debris.  
WHEN TRANSPORTING EQUIPMENT  
Install the fuel system according to applicable  
fuel/gas codes.  
Transport with fuel tank EMPTY or with fuel shut-off  
valve OFF.  
Disconnect spark plug wire and keep it away from  
spark plug.  
On NATURAL / LIQUID PETROLEUM (LP) GAS  
engines transport with fuel cylinder empty or valve  
closed, or tank disconnected.  
Disconnect battery at negative terminal (only  
engines with electric start).  
WHEN TESTING FOR SPARK  
WHEN STORING FUEL OR EQUIPMENT WITH  
FUEL IN TANK  
Use approved spark plug tester.  
Do not check for spark with spark plug removed.  
Store away from furnaces, stoves, water heaters or  
other appliances that have pilot light or other  
ignition source because they can ignite gasoline  
vapors.  
OIL RECOMMENDATIONS  
WARNING  
CAUTION: This engine is shipped from Briggs &  
Stratton without oil. Check oil level before starting  
engine. If you start the engine without oil, the  
engine will be damaged beyond repair and will not  
be covered under warranty.  
Rotating parts can contact or entangle  
hands, feet, hair, clothing, or  
accessories.  
Traumatic amputation or severe lac-  
eration can result.  
Oil capacity is about 2.3 liter (80 ounces)*  
*Approximate amount when changing oil and filter.  
Type of Oil to use  
Use a high quality detergent oil classified ꢀFor Service  
SF, SG, SH, SJ" or higher such as Briggs & Stratton 30,  
Part Number 100005 (20 oz) or 100028 (48 oz).  
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.  
Use no special additives with recommended oils.  
Do not mix oil with gasoline.  
WARNING  
Choose the SAE viscosity grade of oil from this chart that  
matches the starting temperature anticipated before the  
next oil change.  
Wear eye protection when doing repair  
work.  
WARNING  
Frostbite can result from skin/eye con-  
tact with leaking LP liquid.  
Engines give off carbon monoxide, an  
odorless, colorless, poison gas.  
Fig. 2  
Breathing carbon monoxide can  
cause nausea, fainting or death.  
*
CAUTION: The use of non-synthetic multi-viscosity  
oils (5W-30, 10W-30, etc.) in temperatures above 40° F  
(4°ꢁC) will result in higher than normal oil consumption.  
When using a multi-viscosity oil, check oil level more  
frequently.  
Installation, adjustment and repair work should be  
done by a qualified technician.  
Flexible supply lines should be checked regularly to  
make sure they are in good condition. Replace  
damaged or leaking components.  
Start and run engine outdoors.  
Do not start or run engine in enclosed area, even if  
doors or windows are open.  
** CAUTION: Use of SAE 30 oil below 40° F (4° C) will  
result in hard starting and possible engine damage due  
to inadequate lubrication.  
2
supplied by the equipment manufacturer to determine  
which way your engine is equipped.)  
SeeOIL PRESSURE in the MAINTENANCE SECTION for  
Note: Synthetic oil meeting ILSAC GF-2, API certi-  
fication mark and API service symbol (shown at  
left) with ꢀSJ/CF ENERGY CONSERVING" or high-  
er, is an acceptable oil at all temperatures. Use of  
synthetic oil does not alter required oil change  
intervals.  
ADDING FUEL  
Read the operating instructions supplied by the equipment  
manufacturer for information on refueling natural or LP gas  
engine.  
oil filling instructions.  
TO START ENGINE  
Insert key and turn to START.  
STARTING IN COLD WEATHER:  
Use correct type of oil for expected starting  
CHECKING AND ADDING OIL  
temperature. See Oil.  
Use fresh gasoline, which has higher volatility to  
CAUTION:  
To prolong starter life, use short starting cycles  
(5 seconds maximum, then wait one minute). Follow  
equipment manufacturer’s recommendations for  
charging.  
improve starting.  
Remove external equipment/engine loads.  
Fig. 3  
(See equipment operating instructions.)  
Open fuel shut-off valve, if equipped, before  
Check oil level before starting the engine.  
Check level daily, or after every eight (8) hours Ê.  
Keep oil level at FULL Ë.  
starting engine.  
Allow engine to warm up several seconds to  
TO STOP ENGINE  
Turn key OFF. Remove key and store out of reach of  
children.  
several minutes, depending on outside temperature.  
Gradually open choke.  
Do not overfill.  
Oil filling procedure:  
For maximum performance and life, operate engine  
with choke in OPEN and throttle in FAST.  
1. First add 2 liters (67 ounces).  
2. Start and run engine at idle for 30 seconds. See Starting  
Instructions.  
3. Shut engine off and wait 30 seconds.  
4. Then add more oil slowly to bring level to Full mark on  
dipstick.  
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.  
TO START ENGINE  
Fig. 4  
1. Open fuel shut-off valve Ê (if equipped).  
2. Move choke control to CHOKE or START Ë.  
3. Move throttle (if equipped ) to FAST Ì.  
4. Push rocker switch (if equipped ) to ON or RUN Í.  
5. Insert key and turn to START Î.  
Oil checking procedure:  
ENGINE AND ENGINE PARTS  
1. Place engine level. Clean around oil fill and dipstick Ì.  
2. Remove dipstick and wipe clean with cloth.  
3. Then push dipstick back in and remove to check oil level.  
Oil should be at FULL line on dipstick Ë.  
4. If oil is needed, add slowly.  
5. Fill to FULL line on dipstick − recheck.  
6. Replace dipstick firmly.  
We recommend that you see an authorized Briggs &  
Stratton Service Dealer for all maintenance and service of  
the engine and engine parts. Use only genuine Briggs &  
Stratton parts.  
Perform the following at recommended intervals:  
Every 8 hours or daily  
CAUTION:  
To prolong starter life, use short starting cycles  
(5 seconds maximum, then wait one minute). Follow  
equipment manufacturer’s recommendations for  
charging.  
D
D
Check oil level  
Check for oil leaks  
FUEL RECOMMENDATIONS  
Every 50 hours  
6. Allow engine to warm up.  
If choke equipped:  
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.  
D
D
Check valve clearance *  
Clean spark arrester (if equipped)  
Slowly adjust toward RUN position. Wait until engine  
runs smoothly before each choke adjustment.  
Every 100 hours or every season  
D
D
D
D
Change oil *  
Do not use gasoline which contains Methanol.  
Do not mix oil with gasoline.  
WARNING  
Change oil filter *  
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.  
Clean air cleaner **  
For engine protection use Briggs & Stratton Gasoline  
Additive available from your Authorized Briggs &  
Stratton Dealer (P/N 5041 or single use pouch).  
Check valve clearance on NG / LPG Engines.  
Every 250 hours  
This engine is certified to operate on gasoline. Exhaust  
Emission Control System: EM (Engine Modifications).  
D
D
Check valve clearance  
Check battery electrolyte  
TO STOP ENGINE  
CAUTION:  
Every 400 hours  
Some fuels, called oxygenated or reformulated  
gasoline, are gasoline blended with alcohols or  
ethers. Excessive amounts of these blendscan  
damage the fuel system or cause perfor-  
manceproblems. If any undesirable operating  
symptoms occur,use gasoline with a lower percent-  
age of alcohol or ether.  
Fig. 4  
D
D
Replace air cleaner cartridge **  
Change fuel filter  
1. Move throttle to SLOW Ì (if equipped)  
2. Turn key OFF Î. Remove key and store out of reach of  
children.  
3. Push rocker switch Í (if equipped) to OFF or STOP.  
4. Close fuel shut-off valve Ê (if equipped).  
Every 600 hours  
D
Replace safety filter cartridge  
Yearly  
D
Change spark plugs  
NATURAL / LIQUID PROPANE  
GAS POWERED ENGINES  
ADDING FUEL  
*
Change oil and filter after first 5 to 8 hours of use,  
then every 100 hours or every season. Change oil  
every 50 hours when operating the engine under  
heavy load or in high temperatures.  
Check valve clearance after first 50 hours of use,  
then every 250 hours.  
1. Remove cap. Fill tank to  
FUEL RECOMMENDATIONS  
Use clean, dry fuel, free of moisture or any particulate  
material. Using fuels outside the following recommended  
values may cause performance problems.  
WARNING  
approximately 1-1/2 inches  
below top of neck to allow for  
fuel expansion. Be careful  
not to overfill.  
** Clean more often under dusty conditions or when  
airborne debris is present. Replace air cleaner parts,  
if very dirty.  
In engines set up to run on LPG, commercial grade HD5  
LPG is recommended. Recommended fuel composition  
2. Replace cap before starting.  
3
is fuel with a minimum fuel energy of 2500 BTU’s/ft with  
STARTING/STOPPING  
maximum propylene content of 5% and butane and  
heavier gas content of 2.5% and minimum propane  
content of 90%.  
CHANGING OIL AND OIL FILTER  
WARNING  
NG or LPG engines are certified to operate on natural or  
liquid propane gas.  
Fig. 5  
WARNING  
Change oil and filter after first 5 to 8 hours and every 100  
hours thereafter.  
The equipment on which this engine is  
mounted is equipped with an automatic  
safety gas ꢀfuel lock-off" valve. DO NOT  
operate the equipment if the ꢀfuel lock-off"  
valve is missing or inoperative.  
1. With engine OFF but still warm, remove oil drain plug  
Ê
OIL PRESSURE SWITCH  
and drain oil into appropriate receptacle. Reinstall drain  
plug.  
If engine is equipped with an oil pressure switch, the switch  
will either activate a warning light or stop the engine when  
the engine runs low on oil. (Read the operating instructions  
2. Remove oil filter Ë. Before installing new filter, lightly oil  
filter gasket with fresh, clean oil.  
3
run engine until it stops from lack of fuel, or b) if fuel tank  
contains gasoline, either run engine until it stops from  
lack of fuel, or add a gasoline additive to the gas in the  
tank. (See parts list. Single-use pouches of gas additive  
are available from your service dealer.) If you use a gas  
additive, run the engine for several minutes to circulate  
the additive through the carburetor. Then, engine and  
fuel can be stored up to 24 months.  
3. Screw filter on by hand until gasket contacts oil filter  
adapter. Tighten 1/2 to 3/4 turn more.  
AIR CLEANER  
Fig. 7  
Fig. 3  
CAUTION:  
4. Place engine level. Remove oil fill cap Í and add fresh  
oil. Oil filling procedure: First, add 67 ounces (2 liters).  
Start and run engine at idle for 30 seconds. Shut engine  
off and wait 30 seconds. Then, add more oil slowly to  
bring level to Full mark on dipstick Ë. Do not overfill.  
Do not use pressurized air or solvents to clean  
cartridge. Pressurized air can damage cartridge;  
solvents will dissolve cartridge.  
2. While engine is still warm, change oil.  
3. Remove spark plugs and pour about 1 oz. (30 ml) of  
engine oil into each cylinder. Replace spark plugs and  
crank slowly to distribute oil.  
5. Replace oil fill cap and dipstick.  
Clean Air Filter Cartridge every 100 hours. To clean  
cartridge, gently tap on end with handle of screwdriver.  
Replace cartridge every 400 hours. Clean and replace  
more often under dusty conditions.  
1. Remove cover Ê.  
2. Remove cartridge Ë , and inspect. Replace if very dirty  
or any damage occurs to cartridge.  
3. Carefully clean out air cleaner cover.  
4. Install cartridge in.  
5. Install cover  
On Gasoline Engine: Install cover and lock clamps with  
rubber valve Ì down.  
4. Clean engine of surface debris, chaff or grass.  
CAUTION:  
Store in a clean, dry area. Do not  
WARNING  
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.  
store in same area as a stove,  
furnace, water heater, or other ap-  
pliance that uses a pilot light or has a  
device that can create a spark.  
OIL PRESSURE  
If oil pressure drops below 1-4 psi (.1-.2 kg/cm ), an oil  
2
SERVICE  
pressure switch (if engine is equipped) will either activate a  
warning device or stop the engine. Check oil level with  
dipstick. If oil level is between ADD and FULL mark on  
dipstick, Do not try to restart engine. Contact an Authorized  
Briggs & Stratton Service Dealer. Do not operate engine  
until oil pressure is corrected.  
We recommend that you see an authorized Briggs &  
Stratton Service Dealer for all maintenance and service of  
the outboard and outboard parts. Use only genuine Briggs  
& Stratton parts.  
Each Authorized Briggs & Stratton Service Dealer 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 recognized as ꢀAuthorized Briggs & Stratton" meet  
the higher Briggs & Stratton service standards.  
Gasoline Engine:  
Replace Safety Filter Cartridge Í every 600 hours, or with  
every other air filter cartridge replacement.  
To replace cartridge, pull carefully to remove from air  
cleaner body, ensure no debris enters engine. Install new  
safety cartridge first, then install air filter cartridge over  
safety filter.  
If oil level is below ADD mark on dipstick, add oil to bring  
level to FULL mark. Restart engine and check oil pressure.  
If pressure is normal, continue to operate engine.  
Note: Oil pressure gauge, if engine is equipped, is sup-  
plied by manufacturer of equipment.  
CLEANING DEBRIS  
When you purchase equipment  
powered by a Briggs & Stratton  
engine, you are assured of highly  
skilled, reliable 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.  
Fig. 8  
EMISSION CONTROL  
Daily or before every use, clean accumulated debris from  
engine. Keep linkage, springs and controls clean. Keep area  
around and behind muffler free of any combustible debris.  
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.  
Remove front carburetor cover Ê , and clean around  
intake manifold and carburetor.  
CAUTION: Do not use water to clean engine parts.  
Water could contaminate fuel system. Low pressure  
compressed air may be used, be careful not to damage  
radiator fins.  
You may locate your nearest Authorized Briggs &  
Stratton Service Dealer in our dealer locator map on our  
web site www.briggsandstratton.com or in the ꢀYel-  
low Pagest " directory under ꢀEngines,  
WARNING  
If you perform any maintenance on the  
engine, first disconnect the spark plug wires  
from the spark plugs, and disconnect the  
battery at the negative terminal (electric  
starter engines only) to prevent unintentional  
sparking. Unintentional sparking can result  
in fire or electric shock. Unintentional start-  
up can result in entanglement, traumatic  
amputation or laceration. Use only correct  
tools.  
Gasoline" or ꢀGasoline Engines," or ꢀLawn  
Mowers" or similar category.  
Engine parts should be kept  
WARNING  
clean to reduce the risk of  
overheating and ignition of ac-  
cumulated debris.  
An illustrated shop manual in-  
cludes common specifications  
and detailed information cover-  
ing adjustment, tune-up and re-  
pair of Briggs & Stratton OHV,  
twin cylinder, 4 cycle engines. It  
is available for purchase from an  
Authorized Briggs & Stratton  
Service Dealer or you can order  
it from the factory. Write:  
FUEL FILTER  
WARNING  
WARNING  
Briggs & Stratton Corporation  
Attn: Service Division  
P. O. Box 1144,  
Do not strike the flywheel with hammer or hard  
object. If done, the flywheel may shatter during  
operation.  
Drain fuel tank or close fuel shut-off valve before replacing fuel  
filter. Otherwise, fuel can leak out, creating a fire/explosion  
hazard.When replacing fuel filter, ensure clamps are tight and  
fuel flows into the same direction as the arrow marked FLOW.  
Milwaukee, WI 53201  
Do not tamper with governor spring, links or other  
parts to increase engine speed.  
PARTIAL LIST OF  
GENUINE BRIGGS & STRATTON PARTS  
MUFFLER/FUEL SYSTEM  
SPARK PLUGS  
Replacement parts for the muf-  
WARNING  
PART  
PART NO.  
fler must be the same and  
Air cleaner cartridge . . . . . . . . . . . . . . . . . . . . . . 809670  
Safety air cleaner cartridge . . . . . . . . . . . . . . . . . . 821136  
Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100028  
Oil filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492932  
Fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 691035  
Fuel pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 809669  
Gas additive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5041  
Resistor spark plug . . . . . . . . . . . . . . . . . . . . . . . 692051  
Spark plug wrench . . . . . . . . . . . . . . . . . . . . . . . . . 19374  
Spark tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19368  
installed in the same position as  
the original parts, otherwise fire  
can occur.  
Fig. 6  
Change spark plugs yearly. Use only Briggs & Stratton  
Spark Tester (part number 19368) to check for spark.  
Replacement parts for fuel system (cap, hoses, tanks,  
filters, etc.) must be the same as original parts,  
otherwise fire can occur.  
Gap spark plug to 0.76 mm (.030 in.) gap Ê.  
Note: In some areas, local law requires using resistor  
spark plug to suppress ignition signals. If this engine was  
originally equipped with resistor spark plugs, use same  
type for replacement.  
STORAGE  
Engines stored over 30 days need special attention.  
1. To prevent gum from forming in fuel system or on  
essential carburetor parts:  
a) if fuel tank contains oxygenated or reformulated  
VALVE CLEARANCE  
Check valve clearance every 250 hours.  
(See Tune-up Specifications on page 1).  
Oil pump kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5056  
(uses standard electric drill to remove oil from engine quickly)  
gasoline (gasoline blended with an alcohol or an ether), Repair manual . . . . . . . . . . . . . . . . . . . . . . . . . . 272144  
4
Briggs & Stratton Emissions Control  
Defects Warranty Provisions  
Briggs & Stratton Corporation (B&S),  
the California Air Resources Board (CARB)  
and the United States  
Look For Relevant Emission  
Durability Period and  
Air Index Information On  
Your Engine Emission Label  
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.  
Environmental Protection Agency (U.S. EPA)  
Emissions Control System Warranty Statement  
(Owner’s Defect Warranty Rights and Obligations)  
Engines that are certified to meet the California Air Re-  
sources Board (CARB) Tier 2 Emissions Standards must  
display information regarding the Emissions Durability  
Period and the Air Index. Briggs & Stratton makes this in-  
formation available to the consumer on our emissions la-  
bels. The engine emissions label will indicate certification  
information.  
1. Warranted Parts  
California, United States and Canada Emissions  
Control Defects Warranty Statement  
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.  
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, ne-  
glect or improper maintenance of your small off-road en-  
gine.  
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 diagno-  
sis, parts and labor.  
a. Fuel Metering System  
Cold start enrichment system (soft choke)  
Carburetor and internal parts  
Fuel pump  
The Emissions Durability Period describes the number  
of hours of actual running time for which the engine is cer-  
tified to be emissions compliant, assuming proper mainte-  
nance in accordance with the Operating & Maintenance  
Instructions. The following categories are used:  
Fuel line, fuel line fittings, clamps  
Fuel tank, cap and tether  
Carbon canister  
b. Air Induction System  
Moderate:  
Engine is certified to be emissions compliant for 125 hours  
of actual engine running time.  
Air cleaner  
Intake manifold  
Purge and vent line  
Intermediate:  
Engine is certified to be emissions compliant for 250 hours  
of actual engine running time.  
c. Ignition System  
Spark plug(s)  
Magneto ignition system  
d. Catalyst System  
Extended:  
Catalytic converter  
Exhaust manifold  
Air injection system or pulse valve  
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. There-  
fore, the Emissions Durability Period of an engine with  
an intermediate rating would equate to 10 to 12 years.  
Briggs & Stratton Emissions Control  
Defects Warranty Coverage  
e. Miscellaneous Items Used in Above Systems  
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.  
Vacuum, temperature, position, time sensitive  
valves and switches  
Connectors and assemblies  
Certain Briggs & Stratton engines will be certified to meet  
the United States Environmental Protection Agency  
(USEPA) Phase 2 emissions standards. For Phase 2 cer-  
tified engines, the Emissions Compliance Period referred  
to on the Emissions Compliance label indicates the num-  
ber of operating hours for which the engine has been  
shown to meet Federal emissions requirements.  
2. Length of Coverage  
B&S warrants to the initial owner and each subsequent  
purchaser that the Warranted Parts shall be free from de-  
fects in materials and workmanship which caused the fail-  
ure of the Warranted Parts for a period of two years from  
the date the engine is delivered to a retail purchaser.  
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 fail-  
ure to ensure the performance of all scheduled mainte-  
nance.  
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.  
For engines less than 225 cc displacement.  
Category C = 125 hours  
Category B = 250 hours  
3. No Charge  
Repair or replacement of any Warranted Part will be per-  
formed at no charge to the owner, including diagnostic la-  
bor 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.  
Category A = 500 hours  
For engines of 225 cc or more displacement.  
Category C = 250 hours  
Category B = 500 hours  
Category A = 1000 hours  
You are responsible for presenting your small off-road en-  
gine 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.  
4. Claims and Coverage Exclusions  
Warranty claims shall be filed in accordance with the pro-  
visions of the B&S Engine Warranty Policy. Warranty cov-  
erage shall be excluded for failures of Warranted Parts  
which are not original B&S parts or because of abuse, ne-  
glect or improper maintenance as set forth in the B&S En-  
gine Warranty Policy. B&S is not liable to cover failures of  
Warranted Parts caused by the use of add-on, non-origi-  
nal, or modified parts.  
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.  
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 replace as  
necessary" shall be warranted as to defects for the war-  
ranty 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 re-  
pairs. 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 en-  
gine components caused by the failure of any Warranted  
Part still under warranty.  
5
BRIGGS & STRATTON ENGINE OWNER WARRANTY POLICY  
Effective 12/06  
LIMITED WARRANTY  
Briggs & 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 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  
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 IM-  
PLIED 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  
Vanguard  
Consumer Use  
2 years  
Commercial Use  
2 years  
t
Extended Life Seriest , I/CR , Intek I/CR , Intek Pro  
t
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 pur-  
poses 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 en-  
gine damage occurred because of misuse, lack of routine main-  
tenance, shipping, handling, warehousing or improper installa-  
tion. 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.  
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 (check oil level daily  
or after every 8 hours of operation. 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. Read Operating &  
Maintenance Instructions.  
replace the cartridge.) Read Operating & Maintenance  
Instructions.  
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 fins on the cylinder, cylinder head and flywheel at  
recommended intervals.) Read Operating & Maintenance  
Instructions.  
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.  
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 be-  
cause of improper maintenance, is not covered by warranty.  
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 re-oil  
the Oil-Foam element or the foam pre-cleaner, and  
Warranty is available only through service dealers which  
have been authorized by Briggs & Stratton Corporation.  
your nearest Authorized Service Dealer is listed in the  
ꢀYellow Pages" of your telephone directory under  
ꢀEngines, Gasoline" or ꢀGasoline Engines," ꢀLawn Mow-  
ers," or similar 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  
6,542,074  
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  
6
Fig. 4  
Fig. 7  
Ê
Î
Í
Ì
Ë
Í
Ë
Ê
Fig. 5  
Ê
Ì
Ë
Ë
Ê
Fig. 6  
Fig. 8  
Ê
Ê

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