Briggs Stratton Lawn Mower 280000 User Manual

Operating & Maintenance

Instructions

Model Series

Covered in

This Manual

210000

280000

310000

Model

Type

Code

Month Day

Year

Note: General Model Series numbers noted above are inclusive of the specific model

number found on your engine. To get replacement parts or technical assistance in the

future, write your engine Model, Type, Code and date of purchase here.

TABLE OF CONTENTS

WARNING

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Engine Information . . . . . . . . . . . . . . . . . . . . . . . . 6

Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Fuel and Starting Information . . . . . . . . . . . . . . . 8

Starting and Stopping . . . . . . . . . . . . . . . . . . . 9-10

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 11-13

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Parts and Service & Storage . . . . . . . . . . . . 15-16

Warranty Information . . . . . . . . . . . . . . . . . . . . . 17

Briggs & Stratton does not approve or authorize the use of

these engines on 3-wheel All Terrain Vehicles (ATVs), motor

bikes, 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.

Need assistance? Go to www.briggsandstratton.com

for detailed information regarding

Briggs & Stratton engines.

Or call, 1-800-233-3723, (U.S.A. and Canada)

to hear a menu of pre-recorded messages

offering engine maintenance information.

PRINTED IN U.S.A.

FORM NO. 275038-8/03

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275038

BEFORE OPERATING ENGINE

• Read entire Operating & Maintenance Instructions AND

the instructions for the equipment this engine powers.*

• Failure to follow instructions could result in serious injury

or death.

THE OPERATING & MAINTENANCE INSTRUCTIONS

CONTAIN SAFETY INFORMATION TO

• Make you aware of hazards associated with engines

• Inform you of the risk of injury associated with those hazards, and

• Tell you how to avoid or reduce the risk of injury.

The safety alert symbol

information about hazards that can result in personal injury.

( )

is used to identify safety

HAZARD SYMBOLS AND MEANINGS

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.

Fire

Explosion

Moving Parts

DANGER indicates a hazard which, if not

avoided, will result in death or serious injury.

Toxic Fumes

Hot Surface

Kickback

Shock

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.

THE INTERNATIONAL SYMBOLS USED

ON THE ENGINE OR

CAUTION, when used without the alert symbol,

indicates a situation that could result in damage

to the engine.

IN THIS MANUAL INCLUDE:

WARNING

On Off

Fuel

Read Owner’s

Manual

Safety Alert

The engine exhaust from this prod-

uct contains chemicals known to the

State of California to cause cancer,

birth defects, or other reproductive

harm.

Oil

Choke

Stop Fuel Shutoff

Briggs & Stratton does not necessarily know what equipment 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.

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SAFETY

WARNING

Starting engine creates sparking.

Gasoline and its vapors are extremely

flammable and explosive.

Sparking can ignite nearby flammable

gases.

Fire or explosion can cause severe burns

or death.

Explosion and fire could result.

WHEN ADDING FUEL

• Turn engine OFF and let engine cool at least 2

minutes before removing gas cap.

• If there is natural or LP gas leakage in area, do not

start engine.

• Do not use pressurized starting fluids because

vapors are flammable.

• Fill fuel tank outdoors or in well-ventilated area.

• Do not overfill fuel tank. Fill tank to approximately

1-1/2 inches below top of neck to allow for fuel

expansion.

• 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.

WARNING

Rapid retraction of starter cord (kickback) will

pull hand and arm toward engine faster than

you can let go.

WHEN STARTING ENGINE

• Make sure spark plug, muffler, fuel cap and air

cleaner are in place.

Broken bones, fractures, bruises or sprains

could result.

• Do not crank engine with spark plug removed.

• If fuel spills, wait until it evaporates before starting

engine.

• When starting engine, pull cord slowly until

resistance is felt, then pull rapidly.

• If engine floods, set choke to OPEN/RUN position,

place throttle in FAST and crank until engine starts.

• Remove all external equipment/engine loads

before starting engine.

• Direct coupled equipment components such as,

but not limited to, blades, impellors, pulleys,

sprockets, etc., must be securely attached.

WHEN OPERATING EQUIPMENT

• Do not tip engine or equipment at angle which

causes gasoline to spill.

• Do not choke carburetor to stop engine.

WHEN TRANSPORTING EQUIPMENT

• Transport with fuel tank EMPTY or with fuel shut-off

WARNING

valve OFF.

Rotating parts can contact or entangle

hands, feet, hair, clothing, or accessories.

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.

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.

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SAFETY

WARNING

Engines give off carbon monoxide, an

odorless, colorless, poison gas.

Unintentional sparking can result in fire or

electric shock.

Breathing carbon monoxide can cause

nausea, fainting or death.

Unintentional start-up can result in en-

tanglement, traumatic amputation, or lac-

eration.

• Start and run engine outdoors.

• Do not start or run engine in enclosed area, even if

doors or windows are open.

BEFORE PERFORMING ADJUSTMENTS OR

REPAIRS

• Disconnect spark plug wire and keep it away from

spark plug.

WARNING

Running engines produce heat. Engine

parts, especially muffler, become extremely

hot.

• Disconnect battery at negative terminal (only

engines with electric start).

Severe thermal burns can occur on contact.

WHEN TESTING FOR SPARK

• Use approved spark plug tester.

Combustible debris, such as leaves, grass,

brush, etc. can catch fire.

• Do not check for spark with spark plug removed.

• 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.

ENGINE INFORMATION

TECHNICAL INFORMATION

POWER RATINGS: The power ratings for an individual engine

model are initially developed by starting with SAE (Society of

Automotive Engineers) code J1940 (Small Engine Power &

Torque Rating Procedure) (Revision 2002-05). Given both the

wide array of products on which our engines are placed, and the

variety of environmental issues applicable to operating the

equipment, it may be that the engine you have purchased will not

develop the rated horsepower when used in a piece of power

equipment (actual “on-site” power). This difference is due to a

variety of factors including, but not limited to, the following:

differences in altitude, temperature, barometric pressure,

humidity, fuel, engine lubrication, maximum governed engine

speed, individual engine to engine variability, design of the

particular piece of power equipment, the manner in which the

engine is operated, engine run-in to reduce friction and clean out

of combustion chambers, adjustments to the valves and

carburetor, and other factors. The power ratings may also be

adjusted based on comparisons to other similar engines utilized

in similar applications, and will therefore not necessarily match the

values derived using the foregoing codes.

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ENGINE INFORMATION

1. Oil drain

7. Air cleaner

8. In-line fuel filter (if equipped)

9. Carburetor

10. Oil filter (if equipped)

11. Spark plug wire

12. Engine

2. Oil fill/Dipstick

3. Rotating screen

4. Blower housing

5. Muffler/(Muffler guard, if equipped)/

(Spark arrester, if equipped)

Model

xxxxx

Type

xxxx xx

Code

xxxxxxxx

6. 12 V electric starter

MODEL SERIES 210000

GENERAL INFORMATION

ENGINE MODEL

This is a single cylinder, overhead valve (OHV), air-cooled

engine. It is a low emissions engine.

In the state of California, OHV Model Series 210000,

280000 and 310000 engines are certified by the California

Air Resources Board to meet emissions standards for 250

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.

Bore . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7/16 in. (87.31 mm)

Stroke . . . . . . . . . . . . . . . . . . . . . . . 2-17/64 in. (77.78 mm)

Displacement . . . . . . . . . . . . . . . . 21.00 cu. in. (344.1 cc)

MODEL SERIES 280000

Bore . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7/16 in. (87.31 mm)

Stroke . . . . . . . . . . . . . . . . . . . . . . . . 3-1/16 in. (77.78 mm)

Displacement . . . . . . . . . . . . . . . . 28.42 cu. in. (465.7 cc)

MODEL SERIES 310000

Bore . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9/16 in. (90.60 mm)

Stroke . . . . . . . . . . . . . . . . . . . . . . . . 3-1/16 in. (77.78 mm)

Displacement . . . . . . . . . . . . . . . . 30.59 cu. in. (501.2 cc)

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 15°.

TUNE-UP SPECIFICATIONS

Armature air gap . . . 0.010 – 0.014 in. (0.25 – 0.36 mm)

Spark plug gap . . . . . . . . . . . . . . . . . . 0.030 in. (0.76 mm)

Valve clearance with valve springs installed and piston 1/4 in.

(6 mm) past top dead center (check when engine is cold).

See Repair Manual P/N 272147.

Intake . . . . . . . . . . . . . 0.003 – 0.005 in. (0.08 – 0.13 mm)

Exhaust . . . . . . . . . . . 0.005 – 0.007 in. (0.13 – 0.18 mm)

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275038

OIL

SAE Viscosity Grades

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.

OIL CAPACITY

Engine without oil filter holds approximately 1-1/2 quarts

(48 ounces; 1.4 liters).

-20

-30

32 40

100

°F

°C

-20

-10

STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE

TYPE OF OIL TO USE

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.

• Use a high quality detergent oil classified “For Service

SF, SG, SH, SJ” or higher, such as Briggs & Stratton

30W, Part Number 100005 (20 oz) or 100028 (48 oz).

• Do not use special additives.

• Choose a viscosity according to the table opposite.

Note: Synthetic oil meeting ILSAC GF-2, API

certification mark and API service symbol

(shown at left) with “SJ/CF ENERGY CON-

SERVING” or higher, is an acceptable oil at all

temperatures. Use of synthetic oil does not

alter required oil change intervals.

** CAUTION: SAE 30 oil, if used below 40° F (4° C), will

result in hard starting and possible engine bore

damage due to inadequate lubrication.

CHECKING AND ADDING OIL

• Check oil level before starting the engine.

• Check level daily, or after every eight (8) hours.

• Keep oil level at FULL.

• Do not overfill.

Oil Fill

[3] Replace and tighten dip-

stick. Remove and check

[1] Place engine level and

clean around oil fill area.

[2] Remove dipstick and

wipe clean with cloth.

oil level.

[4] Oil level should be at

FULL line on dipstick.

[5] If needed, add oil slowly -

recheck. Do not over fill.

[6] Replace and tighten dip-

stick.

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FUEL

• This engine is certified to operate on gasoline. Exhaust

TYPE OF FUEL TO USE

Emission Control System: EM (Engine Modifications).

• 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.

• Do not use gasoline which contains Methanol.

• Do not mix oil with gasoline.

• For engine protection use Briggs & Stratton Gasoline

Additive available from your Authorized Briggs &

Stratton Dealer (P/N 5041 or single use pouch).

CAUTION: Some fuels, called oxygenated or reformu-

lated gasoline, are gasoline 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.

ADDING FUEL

WARNING

[1] Remove cap. Fill tank to approximately 1-1/2

inches below top of neck to allow for fuel

expansion. Be careful not to overfill.

Briggs & Stratton Smart-fill) fuel canfills to the

correct level and automatically shuts off, reduc-

ing spills and emissions.

• Turn engine OFF and let engine cool at least 2

minutes before removing gas cap.

• Fill fuel tank outdoors or in well-ventilated area.

• Keep gasoline away from sparks, open flames,

pilot lights, heat, and other ignition sources.

[2] Replace cap before starting.

• If fuel spills, wait until it evaporates before

starting engine.

STARTING

OIL PRESSURE SWITCH

WARNING

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

supplied by the equipment manufacturer to determine

which way your engine is equipped because the equipment

manufacturer supplies the oil pressure gauge.)

• Do not use pressurized starting fluids.

• Vapors are flammable.

See OIL PRESSURE on page 12 for oil filling instructions.

STARTING AND OPERATING TIPS

♦Store and fuel equipment in level position.

♦Use fresh fuel. (See Fuel.)

♦Periodically remove grass buildup under mower

deck. (See Maintenance.)

♦Use correct type of oil for expected starting

♦After engine has started, let it warm up several

seconds to several minutes, depending on outside

temperature.

temperature. (See Oil.)

♦Remove external equipment/engine loads. (See

equipment operating instructions.)

♦For maximum performance and life, operate engine

with choke in RUN and throttle in FAST.

♦Start lawn mower on hard surface or over previously

cut grass.

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STARTING AND STOPPING

REWIND (MANUAL) STARTER (auxiliary)

TO START ENGINE

1/4 TURN

Choke/throttle control

Choke

Throttle

[1] Check oil level (see p. 7).

[2] Open fuel shut-off valve

(if equipped) 1/4 turn.

[4] If choke and throttle are on the

same control, move control to

CHOKE or START

[3] If choke and throttle controls are

separate, move choke control to

CHOKE. Move throttle to FAST.

WARNING

[7] Let engine warm up.

If choke equipped:

Slowly adjust toward

RUN position. Wait

until engine runs

smoothly before each

choke adjustment.

[6] Grasp rope handle. Pull slowly until resistance is

felt, then pull rapidly to start engine and avoid

kickback.

[5] Insert key and

turn to RUN.

TO STOP ENGINE

[2] Close fuel shut-off valve

(if equipped).

[1] With throttle in FAST, turn key to OFF.

Remove key and store out of reach of children.

STARTING AND STOPPING

ELECTRIC (KEY) STARTER (if equipped)

TO START ENGINE

Choke

Throttle

Choke/throttle control

[2] If choke and throttle controls are sepa-

rate, move choke control to CHOKE.

Move throttle to FAST.

[3] If choke and throttle are on the

same control, move control to

CHOKE or START

[1] Check oil level.

CAUTION:

1/4 TURN

[6] Let engine warm up.

If choke equipped:

Slowly adjust toward

RUN position. Wait

until engine runs

smoothly before each

choke adjustment.

To prolong starter life,

use

short

starting

cycles (5 seconds max-

imum, then wait one

minute). Follow equip-

ment manufacturer’s

recommendations for

charging battery.

[4] Open fuel shut-off

valve (if equipped).

[5] Insert key and

turn to START.

TO STOP ENGINE

1/4 TURN

[1] With throttle in FAST, turn key to OFF.

Remove key and store out of reach of children.

[2] Close fuel shut-off valve

(if equipped).

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MAINTENANCE

EMISSION CONTROL

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.

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.

Task

CHANGING OIL

Perform task at hourly

or calendar interval,

whichever comes first.

TO REMOVE

5/16” HEX

3/8” SQUARE

Check Oil Level

Change Oil

Change oil filter

(if equipped)

7/16” PIPE

OIL DRAIN

PLUG

Typical drain

plugs

Service air cleaner

pre-cleaner (if

equipped)

4**

[1] Place engine level.

WARNING

Replace air cleaner

cartridge (if not

equipped with pre-

cleaner)

[2] Disconnect spark plug

wire and keep away from

spark plug. Disconnect

battery (if equipped with

electric starter) at nega-

tive terminal.

Replace air cleaner

cartridge (if equipped

with pre-cleaner)

[3] With engine OFF but still warm remove oil drain

plug and drain oil into appropriate receptacle.

Clean Extended Life

Series air cleaner

cartridge

[4] Reinstall drain plug. Remove dipstick.

[5] Fill to FULL mark on dipstick with new oil.

Replace Extended

Life Series

air cleaner cartridge

Do not overfill.

Note: Engine without oil filter holds approximately 1-1/2

quarts (48 ounces; 1.4 liters). Engine equipped with filter

holds approximately 1-3/4 quarts (56 ounces; 1.7 liters).

Inspect spark arrester

(if equipped)

[6] Replace dipstick.

Replace spark plug

Replace in-line fuel fil-

ter (if equipped)

Clean cooling system

Check valve clear-

ance

Change oil after first 5 to 8 hours of use, then every

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.

50 hours or every season. Change oil every 25 hours

when operating the engine under heavy load or in high

temperatures.

** Clean more often under dusty conditions or when

airborne debris is present. Replace air cleaner parts, if

very dirty.

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MAINTENANCE

AIR CLEANER

CAUTION: Do not use pressurized air or solvents to clean cartridge. Pressurized air can damage cartridge;

solvents will dissolve cartridge.

FLAT AIR CLEANER REMOVAL/ INSTALLATION

[1] Pull up on air cleaner cover handle, and rotate toward

engine.

[2] Remove air cleaner cover.

[3] Carefully lift air cleaner cartridge and pre-cleaner, if

equipped, from blower housing.

OVAL AIR CLEANER REMOVAL / INSTALLATION

[1] Remove cover knob and cover.

[2] Remove cartridge knob.

[3] Carefully lift air cleaner assembly (pre-cleaner, if

equipped, and cartridge) from base over stud.

Note: To clean pre-cleaner, wash in soapy water. Squeeze

Note: To clean pre-cleaner (if equipped), separate it from

cartridge and wash soapy water. Squeeze dry in a clean

cloth. Saturate in engine oil. Squeeze in clean, absorbent

cloth to remove all EXCESS oil.

dry in a clean cloth. DO NOT OIL.

[4] Clean base of air cleaner cartridge area carefully to

prevent debris from entering engine.

[5] Place air cleaner pre-cleaner, if equipped, and cartridge

into blower housing. Cartridge must fit securely in base.

[6] Align tabs on cover with slots of blower housing and

replace cover.

[4] Clean base carefully to prevent debris from entering

carburetor.

[5] Reassemble pre-cleaner on cartridge and place

assembly over stud. Air cleaner must fit securely in

base.

[7] Hook handle and close cover.

[6] Tighten cartridge knob securely.

[7] Replace cover and tighten cover knob securely.

COVER

KNOB

COVER

CARTRIDGE

KNOB

PRE-CLEANER

(if equipped)

CARTRIDGE

PRE-CLEANER

COVER

TABS

STUD

BASE

SLOTS

EXTENDED LIFE SERIESE CARTRIDGE ONLY

This filter, IF STAMPED ‘WASH-

ABLE’, can be washed with warm

water and mild soap.

IMPORTANT: Rinse in tap water

with SCREEN side up allowing dirt

and debris to filter out.

Leave filter to dry overnight before

reinstalling.

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MAINTENANCE

HIGH FLOW AIR CLEANER MAINTENANCE

Perform this maintenance every 25 hours or every season,

clean more often under dusty conditions or when airborne

debris is present. This filter is made of cotton, which is

different from a standard paper filter, therefore it MUST be

oiled.

[1] Remove clamp and pull air cleaner from intake

manifold.

WARNING

Never use motor oil, transmission fluid, WD40, or other

oils. Failure to follow instructions can cause fires

resulting in death or serious injury. Use only air filter oil

designed specifically for air filters.

[7] Spray the filter with oil, or pour small amount onto

each pleat and allow filter to stand for 20 minutes. The

filter is correctly oiled when the cotton changes from

white to the color of the oil.

[2] Remove as much dirt from the filter as possible.

[3] Using the High Flow Air Filter Cleaner Kit, Briggs &

Stratton part no. 5089D, spray the filter with cleaner.

Allow the solution to soak in to the filter for about 15

minutes.

CAUTION: DO NOT over-oil air filter, it will interfere

with engine performance and may cause engine

damage. If the filter is placed on cardboard for 10

minutes and leaves a stain, it is over oiled. Wash/clean

and re-oil per above instructions.

CAUTION: Never use strong detergents, high

pressure water, or gasoline to clean this filter.

[4] Rinse the filter with warm water, inside first and then

outside. (Let the water run from the clean side to the

dirty side.)

[8] Re-install air filter.

CARBURETOR

HIGH FLOW

AIR FILTER

[5] Allow the filter to dry completely. It is best to allow the

filter to dry naturally. Don’t use heat, this might shrink

the cotton.

[6] Use only air filter oil, such as the oil included in the

cleaning kit (P/N 5089D), to re-oil the filter.

FILTER

P/N 698973

CLAMP

OIL PRESSURE

OIL FILTER (IF EQUIPPED)

Replace oil filter after every 100 hours of operation.

[1] Drain engine oil and remove oil filter.

If oil pressure drops too low, an oil pressure switch (if

engine is equipped) will either activate a warning light 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.

[2] Before installing new filter, lightly oil filter gasket with

fresh, clean engine oil.

[3] Screw filter on by hand until gasket contacts oil filter

adapter. Tighten 1/2 to 3/4 turn more.

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 supplied

by manufacturer of equipment.

[4] Add fresh oil. Fill to FULL line on dipstick.

[5] Start and run engine at idle to check for oil leaks.

[6] Stop engine. Recheck oil level and add oil if required.

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MAINTENANCE

ENGINE AND ENGINE PARTS

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.

If you perform any maintenance on the engine, first disconnect the spark plug wire

from the spark plug, and disconnect the battery at the negative terminal (electric

WARNING

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.

• 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.

WARNING

REPLACE FUEL FILTER (if equipped)

MUFFLER

Replacement parts for the muffler

must be the same and installed in the

same position as the original parts,

otherwise fire can occur.

EXTENDED LIFE SERIES FUEL FILTER

PART NO. 695666 OR 5070

(WITH FUEL PUMP)

WARNING

If muffler is equipped with spark arrester screen, remove

screen for inspection. Replace screen if damaged or

plugged.

Drain fuel tank or close

fuel shut-off valve before

replacing fuel filter.

Otherwise, fuel can leak

out, creating a fire/ex-

plosion hazard.

STANDARD FUEL FILTER

PART NO. 394358

(WITH FUEL PUMP)

PART NO. 298090 OR 5018

(WITHOUT FUEL PUMP)

SPARK PLUG

Use only Briggs & Stratton Spark Tester (part number

19368) to check for spark.

FUEL HOSE

CLAMPS

AIR COOLING SYSTEM

CLEAN OUT CHAFF AND

DEBRIS

Note: In some areas, local

law requires using resistor

.030” (0.76 mm)

WIRE GAGE

Debris may clog the en-

gine’s air cooling system.

Remove blower housing

and clean area shown to

prevent overheating and

engine damage.

spark plug to suppress igni-

tion signals. If this engine

was originally equipped

with resistor spark plug,

use same type for replace-

ment.

CLEANING DEBRIS

Daily or before every use, clean grass, chaff or accumu-

lated debris from engine. Keep linkage, spring and

controls clean. Keep area around and behind muffler free

of any combustible debris.

Engine parts should be kept clean to

WARNING

reduce the risk of overheating and

ignition of accumulated debris. This is

especially important if cutting tall grass.

CAUTION: Do not use water to clean engine parts.

Water could contaminate fuel system. Use a brush

or dry cloth.

CLEAN

Muffler,

Spark Arrester

Linkage, Springs,

Controls

Finger Guard

Rotating Screen

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ADJUSTMENTS

TO ADJUST REMOTE CHOKE

TUNE-UP SPECIFICATIONS

Armature air gap . . . 0.010 – 0.014 in. (0.25 – 0.36 mm)

Spark plug gap . . . . . . . . . . . . . . . . . . 0.030 in. (0.76 mm)

CASING

CLAMP

SCREW

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 272147.

[1] Hold choke control to CHOKE or START position.

[2] Loosen casing clamp screw.

[3] Pull casing, wire and choke lever in direction of

Intake . . . . . . . . . . . . . 0.003 – 0.005 in. (0.08 – 0.13 mm)

Exhaust . . . . . . . . . . . 0.005 – 0.007 in. (0.13 – 0.18 mm)

CONTROL ADJUSTMENTS

arrow to end of travel.

[4] Tighten casing clamp screw.

CARBURETOR ADJUSTMENT

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.

WARNING

Differences in fuel, temperature, altitude or load may require

minor carburetor adjustment. Air cleaner and its cover must

be assembled to carburetor before starting engine.

The carburetor on this engine is equipped with an idle

mixture valve with a limiter (see inset), which allows some

adjustment, and an idle speed adjustment screw.

TO ADJUST CARBURETOR

TO ADJUST REMOTE THROTTLE

If the engine does not start or if it runs roughly, the remote

throttle control may need adjustment. See your authorized

Briggs & Stratton dealer or follow the instructions below.

CARBURETOR

THROTTLE

LEVER

IDLE MIXTURE

VALVE

WITH LIMITER

HOLE IN

GOVERNOR

CONTROL LEVER

STOP

SWITCH

GOVERNOR

CONTROL PLATE

IDLE

SPEED

SCREW

[1] To adjust idle speed, start engine and warm up

about 5 minutes.

[2] With engine running, place equipment throttle

control in SLOW position.

[3] Rotate carburetor throttle lever against the idle

speed screw and hold it. Turn idle speed screw to

obtain 1750 rpm (use a tachometer).

GOVERNOR CONTROL RACK

CASING CLAMP SCREW

[1] Move remote throttle control to FAST position.

[4] Then rotate idle mixture valve full travel clockwise

and then counterclockwise.

[2] Hole in governor control lever (located just behind

governor control plate) must align with hole in

governor control plate, as illustrated above.

Note: DO NOT remove limiter caps. DO NOT

force beyond limits.

[3] If holes do not line up, loosen casing clamp screw

and then move governor control rack until it does.

[5] Then, position idle mixture valve in middle of travel.

[6] Check idle speed. Re-adjust to 1750 rpm, if needed.

[7] Move throttle control to FAST position. Engine

should accelerate smoothly. If it does not, adjust

idle mixture valve counterclockwise 1/8 turn.

[4] Tighten casing clamp screw.

[5] Check operation of throttle. Move throttle control to

STOP position.

Note: Engines operated at approximately 3000 to 5000 feet

(900 to 1500 meters) above sea level may require a high

altitude carburetor nozzle. If erratic performance is observed,

contact a Briggs & Stratton Authorized Service Dealer for cost

to install/purchase a high altitude carburetor nozzle.

[6] Governor control lever must make good contact with

stop switch (if equipped). Readjust if necessary.

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SERVICE & STORAGE

You may locate your nearest Authorized Briggs & Stratton

Service Dealer in our dealer locator map on our web site

PARTIAL LIST OF BRIGGS & STRATTON PARTS

Models 280000, 310000 AVSE series

Extended Life SeriesE flat air cleaner cartridge 697153

(washable, no pre-cleaner required)

Extended Life SeriesE Maintenance Kit . . . . . . . . 5128

(Includes oil, A/C filter, spark plug, gas additive)

Flat air cleaner cartridge and pre-cleaner kit . . . . . 5077

Flat air cleaner cartridge . . . . . . . . . . . . . . . . . . . . 698083

Flat air cleaner pre-cleaner . . . . . . . . . . . . . . . . . . 697015

m or in the “Yellow Pages”

directory under “Engines, Gasoline” or “Gasoline

 Engines,” or “Lawn Mowers” or similar category.

Note: Walking fingers logo and “Yellow Pages” are regis-

tered trademarks in various jurisdictions.

An illustrated shop manual includes

common specifications and detailed

information covering adjustment,

tune-up and repair of Briggs & Strat-

ton single cylinder, OHV, 4 cycle

engines. It is available for purchase

from an Authorized Briggs & Stratton

Service Dealer or you can order it

from the factory. Write:

Maintenance Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5127

(Includes oil, A/C filter, spark plug, gas additive)

Model 210000 AVSE series

Flat air cleaner cartridge and pre-cleaner kit . . . . . 5079

Flat air cleaner cartridge . . . . . . . . . . . . . . . . . . . . 698413

Flat air cleaner pre-cleaner . . . . . . . . . . . . . . . . . . 697292

Maintenance Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5126

(Includes oil, A/C filter, spark plug, gas additive)

Briggs & Stratton Corporation

Attn: Service Division

P. O. Box 1144

Part No. 272147

Oval air cleaner cartridge and pre-cleaner kit . . . . 5053

Oval air cleaner cartridge . . . . . . . . . . . . . . . . . . . . 496894

Oval air cleaner pre-cleaner . . . . . . . . . . . . . . . . . . 272403

High Flow Air Filter (cylinder) . . . . . . . . . . . . . . . . 698973

High Flow Air Filter Cleaning Kit . . . . . . . . . . . . . . . 5089D

Synthetic Oil (32 oz.) . . . . . . . . . . . . . . . . . . . . . . . 100074

Oil (20 oz.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100005

Oil (48 oz.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100028

Oil filter (3-1/2 in. long) . . . . . . . . . . . . . . . . . . . . . . 491056

Oil filter (2-1/4 in. long) . . . . . . . . . . . . . . . . . . . . . . 492932

Fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . 298090 -or- 5018

(for engines without fuel pump installed)

Milwaukee, WI 53201

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

gasoline (gasoline blended with an alcohol or an

ether), 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.

Extended Life Series fuel filter . . . . . . 695666 -or- 5070

(for engines equipped with fuel pump)

Fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394358

(for engines equipped with fuel pump)

Gas additive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5041

Resistor spark plug . . . . . . . . . . . . . . . . . . . . . . . . . 491055

Long life platinum spark plug . . . . . . . . . . . . . . . . . . . 5066

(used on most OHV engines)

[2] While engine is still warm, change oil.

Spark plug wrench . . . . . . . . . . . . . . . . . . . 89838 -or- 5023

Spark tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19368

Oil pump kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5056

(uses standard electric drill to remove oil from engine quickly)

[3] Remove spark plug and pour about 1 oz. (30 ml) of

engine oil into cylinder. Replace spark plug and crank

slowly to distribute oil.

[4] Clean engine of surface debris, chaff or grass.

SERVICE

[5]

Store in a clean, dry area.

WARNING Do not store in same area

as a stove, furnace, water

See an Authorized Briggs & Stratton Service Dealer. 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.

heater, or other appliance

that uses a pilot light or

has a device that can

create a spark.

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 5,000 Master

Service Technicians. Look for these signs

wherever Briggs & Stratton service is offered.

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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 the

time periods and subject to the 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.

(Kool Bore)

(Sleeve Bore)

Consumer Use

2 years

1 year

2 years

90 days

1 year

90 days

2 years

1 year

Commercial Use

Note the following special warranty periods: 2 years for Classic engines in the European Union and Eastern European countries, for all consumer products in

the European Union, and for emission control systems on engines certified by EPA and CARB. 5 years for consumer use, 90 days for commercial use of Touch-N-

Mow starter on Quantum and Intek engines. Engines used in competitive racing or on commercial or rental tracks are not warrantied.

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.

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EMISSION CONTROL WARRANTY COVERAGE IS APPLICABLE TO CERTIFIED ENGINES PURCHASED IN CALIFORNIA IN 1995 AND THERE-

AFTER, WHICH ARE USED IN CALIFORNIA, AND TO CERTIFIED MODEL YEAR 1997 AND LATER ENGINES WHICH ARE PURCHASED AND

USED ELSEWHERE IN THE UNITED STATES (AND AFTER JANUARY 1, 2001 IN CANADA).

The California Air Resources Board (CARB), U.S. Elsewhere in the United States, new non-road, Your emission control system includes parts

EPA and B&S are pleased to explain the Emission spark-ignition engines certified for model year such as the carburetor, air cleaner, ignition sys-

Control System Warranty on your model year 1997 and later must meet similar standards set tem, muffler and catalytic converter. Also in-

2002 and later small off-road engine (SORE). In forth by the U.S. EPA. B&S must warrant the emis- cluded may be connectors and other emission

California, new small off-road engines must be de- sion control system on your engine for the periods related assemblies.

signed, built and equipped to meet the State’s of time listed below, provided there has been no

Where a warrantable condition exists, B&S will

repair your small off-road engine at no cost to

you including diagnosis, parts and labor.

stringent anti-smog standards.

abuse, neglect or improper maintenance of your

small off-road engine.

Small off-road engines are warranted relative to emission 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.

As the small off-road engine owner, you are re- As the small off-road engine owner, you should The undisputed warranty repairs should be

sponsible for the performance of the required however be aware that B&S may deny you war- completed in a reasonable amount of time, not

maintenance listed in your Operating and Main- ranty coverage if your small off-road engine or a to exceed 30 days.

tenance Instructions. B&S recommends that part has failed due to abuse, neglect, improper

you retain all your receipts covering mainte- maintenance or unapproved modifications.

If you have any questions regarding your war-

ranty rights and responsibilities, you should con-

nance on your small off-road engine, but B&S

You are responsible for presenting your small

tact

B&S Service Representative at

cannot deny warranty solely for the lack of re-

off-road engine to an Authorized B&S Service

1-414-259-5262.

ceipts or for your failure to ensure the perfor-

mance of all scheduled maintenance.

Dealer as soon as a problem exists.

The emission warranty is a defects warranty.

Defects are judged on normal engine perfor-

mance. The warranty is not related to an in-use

emission test.

The following are specific provisions relative to your Emission 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

2. Length of Coverage

set forth in the B&S Engine Warranty Policy.

B&S is not liable to cover failures of War-

ranted Parts caused by the use of add-on,

non-original, or modified parts.

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.

Coverage under this warranty extends only

to the parts listed below (the emission con-

trol systems parts) to the extent these parts

were present on the engine purchased.

5. Maintenance

a. Fuel Metering System

Any Warranted Part which is not scheduled

for replacement as required maintenance or

which is scheduled only for regular inspec-

tion to the effect of “repair or replace as nec-

essary” shall be warranted as to defects for

the warranty period. Any Warranted Part

which is scheduled for replacement as re-

quired 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 perfor-

mance and durability may be used in the per-

formance of any maintenance or repairs.

The owner is responsible for the perfor-

mance of all required maintenance, as de-

fined in the B&S Operating and Maintenance

Instructions.

•

Cold start enrichment system

Carburetor and internal parts

Fuel Pump

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 Ser-

vice Dealer as listed in the “Yellow Pages”

under “Engines, Gasoline,” “Gasoline En-

gines,” “Lawn Mowers,” or similar category.

b. Air Induction System

•

Air cleaner

Intake manifold

c. Ignition System

•

Spark plug(s)

Magneto ignition system

d. Catalyst System

•

Catalytic converter

Exhaust manifold

Air injection system, Pulse valve

4. Claims and Coverage Exclusions

Warranty claims shall be filed in accordance

with the provisions of the B&S Engine War-

ranty Policy. Warranty coverage shall be ex-

cluded for failures of Warranted Parts which

are not original B&S parts or because of

abuse, neglect or improper maintenance as

e. Miscellaneous Items

6. Consequential Coverage

•

Vacuum, temperature, position,

time sensitive valves

and switches

Coverage hereunder shall extend to the fail-

ure of any engine components caused by

the failure of any Warranted Part still under

warranty.

•

Connectors and assemblies

(

)

5,819,513

5,813,384

5,765,713

5,645,025

5,642,701

5,619,845

5,606,948

5,606,851

5,548,955

5,546,901

5,503,125

5,501,203

5,497,679

5,320,795

5,271,363

5,269,713

5,265,700

5,243,878

5,235,943

5,197,425

5,197,422

5,191,864

5,188,069

5,186,142

5,138,996

5,086,890

5,070,829

5,058,544

5,040,644

5,009,208

4,996,956

4,977,879

4,971,219

4,895,119

4,819,593

4,719,682

4,633,556

4,630,498

4,522,080

4,520,288

4,512,499

4,453,507

4,430,984

DES. 308,871

DES. 308,872

DES. 309,457

DES. 356,951

DES. 361,771

DES. 375,963

6,325,036

6,284,123

6,260,529

6,230,678

6,202,616

6,116,212

6,077,063

6,064,027

6,014,808

5,894,715

5,852,951

5,823,153

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INFORMATIONS IMPORTANTES

CORPORATION BRIGGS & STRATTON

FAMILLE YBSXS.3192VA 274812

CE MOTEUR EST CONFORME AUX NORMES

ANTIPOLLUTION 2000 – 2001 DE CALIFORNIE

POUR LES PETITS MOTEURS HORS ROUTE ET

AUX NORMES ENVIRONNEMENTALES

AMÉRICAINES (EPA PHASE 2) POUR LES

PETITS MOTEURS HORS ROUTE. CONSULTEZ

LE MANUEL DU PROPRIÉTAIRE POUR LES

SPÉCIFICATIONS, L’ENTRETIEN ET LES

AJUSTEMENTS. CONFORME À LA PÉRIODE

D’ÉMISSION EPA : CATÉGORIE : C

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