Briggs & Stratton 280000 Series Manual de instalación y operación

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Model Series

Covered in

This Manual

Operating & Maintenance

Instructions

Model Type Code

Month Day

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.

210000

280000

310000

Year

TABLE OF CONTENTS

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. . . . . . . . . . . . . . . . . . . . .

WARNING

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.

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The Power That Works For You.

Look For Relevant Emissions Durability Period and

Air Index Information On Your Engine Emissions Label

Engines that are certified to meet the California Air Resources Board (CARB) Tier 2 Emission Standards must display information regard-

ing the Emissions Durability Period and the Air Index. Briggs & Stratton makes this information available to the consumer on our emission

labels.

The Emissions Durability Period describes the number of hours of actual running time for which the engine is certified to be emissions

compliant, assuming proper maintenance in accordance with the Operating & Maintenance Instructions. The following categories are

used:

Moderate: Engine is certified to be emission compliant for 125 hours of actual engine running time.

Intermediate: Engine is certified to be emission compliant for 250 hours of actual engine running time.

Extended: Engine is certified to be emission compliant for 500 hours of actual engine running time.

For example, a typical walk-behind lawn mower is used 20 to 25 hours per year. Therefore, the Emissions Durability Period of an en-

gine with an intermediate rating would equate to 10 to 12 years.

The Air Index is a calculated number describing the relative level of emissions for a specific engine family. The lower the Air Index,the

cleaner the engine. This information is displayed in graphical form on the emissions label.

After July 1, 2000, Look For Emissions Compliance Period On

Engine Emissions Compliance Label

After July 1, 2000 certain Briggs & Stratton engines will be certified to meet the United States Environmental Protection Agency (USEPA)

Phase 2 emission standards. For Phase 2 certified engines, the Emissions Compliance Period referred to on the Emissions Compliance

label indicates the number of operating hours for which the engine has been shown to meet Federal emission requirements. For engines

less than 225 cc displacement, Category C = 125 hours, B = 250 hours and A = 500 hours. For engines of 225 cc or more, Category

C = 250 hours, B = 500 hours and A = 1000 hours.

The displacement engines of Model Series 210000 is 344 cc, 280000 is 465 cc, 310000 engines is 501 cc.

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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.

275038

The safety alert symbol ( ) is used to identify safety

information about hazards that can result in personal injury.

A signal word (DANGER, WARNING, or CAUTION) is

used with the alert symbol to indicate the likelihood and the

potential severity of injury. In addition, a hazard symbol

may be used to represent the type of hazard.

DANGER indicates a hazard which, if not

avoided, will result in death or serious injury.

WARNING indicates a hazard which, if not

avoided, could result in death or serious injury.

CAUTION indicates a hazard which, if not

avoided, might result in minor or moderate

injury.

CAUTION,when used without the alert symbol,

indicates a situation that could result in damage

to the engine.

WARNING

The engine exhaust from this prod-

uct contains chemicals known to the

State of California to cause cancer,

birth defects, or other reproductive

harm.

HAZARD SYMBOLS AND MEANINGS

Explosion

Toxic Fumes

Moving Parts

ShockHot Surface

Kickback

Fire

THE INTERNATIONAL SYMBOLS USED

ON THE ENGINE OR

IN THIS MANUAL INCLUDE:

On Off

Fuel Shutoff

Read Owner’s

Manual

Stop Fuel

Choke

Safety Alert

Oil

*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

Gasoline and its vapors are extremely

flammable and explosive.

Fire or explosion can cause severe burns

or death.

WARNING

WHEN ADDING FUEL

•Turn engine OFF and let engine cool at least 2

minutes before removing gas cap.

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

•Do not overfill fuel tank. 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.

WHEN STARTING ENGINE

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

cleaner are in place.

•Do not crank engine with spark plug removed.

•If fuel spills, wait until it evaporates before starting

engine.

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

place throttle in FAST and crank until engine starts.

WHEN OPERATING EQUIPMENT

•Do not 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

valve OFF.

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.

Starting engine creates sparking.

Sparking can ignite nearby flammable

gases.

Explosion and fire could result.

WARNING

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

start engine.

•Do not use pressurized starting fluids because

vapors are flammable.

WARNING

•When starting engine, pull cord slowly until

resistance is felt, then pull rapidly.

•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.

Rapid retraction of starter cord (kickback) will

pull hand and arm toward engine faster than

you can let go.

Broken bones, fractures, bruises or sprains

could result.

WARNING

Rotating parts can contact or entangle

hands, feet, hair, clothing, or accessories.

Traumatic amputation or severe laceration

can result.

•Operate equipment with guards in place.

•Keep hands and feet away from rotating parts.

•Tie up long hair and remove jewelry.

•Do not wear loose-fitting clothing, dangling

drawstrings or items that could become caught.

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SAFETY

Engines give off carbon monoxide, an

odorless, colorless, poison gas.

Breathing carbon monoxide can cause

nausea, fainting or death.

WARNING

•Start and run engine outdoors.

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

doors or windows are open.

WARNING

Running engines produce heat. Engine

parts, especially muffler, become extremely

hot.

Severe thermal burns can occur on contact.

Combustible debris, such as leaves, grass,

brush, etc. can catch fire.

•Allow muffler, engine cylinder and fins to cool

before touching.

•Remove accumulated combustibles from muffler

area and cylinder area.

•Install and maintain in working order a spark

arrester before using equipment on forest-covered,

grass-covered, brush-covered unimproved land.

The state of California requires this (Section 4442

of the California Public Resources Code). Other

states may have similar laws. Federal laws apply

on federal land.

WARNING

Unintentional sparking can result in fire or

electric shock.

Unintentional start-up can result in en-

tanglement, traumatic amputation, or lac-

eration.

BEFORE PERFORMING ADJUSTMENTS OR

REPAIRS

•Disconnect spark plug wire and keep it away from

spark plug.

•Disconnect battery at negative terminal (only

engines with electric start).

WHEN TESTING FOR SPARK

•Use approved spark plug tester.

•Do not check for spark with spark plug removed.

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

2. Oil fill/Dipstick

3. Rotating screen

4. Blower housing

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

(Spark arrester, if equipped)

6. 12 V electric starter

7. Air cleaner

8. In-line fuel filter (if equipped)

9. Carburetor

10. Oil filter (if equipped)

11. Spark plug wire

12. Engine Model Type Code

xxxxx xxxx xx xxxxxxxx

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.

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). . . . . . . . . . .

MODEL SERIES 210000

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°.

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OIL

275038

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).

TYPE OF OIL TO USE

•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.

°F-20 0 20 40 60 80 100

°C-30 -20 -10 0 10 20 30 40

STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE

*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.

** 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.

SAE Viscosity Grades

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.

[1] Place engine level and

clean around oil fill area.

[2] Remove dipstick and

wipe clean with cloth.

[3] Replace and tighten dip-

stick. Remove and check

oil level.

Oil Fill

[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

TYPE OF FUEL TO USE

•Use clean, fresh, regular unleaded gasoline with a

minimum of 85 octane. Fresh fuel prevents gum from

forming in the fuel system or on essential carburetor parts.

Purchase fuel in quantity that can be used within 30 days.

•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).

•This engine is certified to operate on gasoline. Exhaust

Emission Control System: EM (Engine Modifications).

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 can fills to the

correct level and automatically shuts off, reduc-

ing spills and emissions.

[2] Replace cap before starting.

•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.

•If fuel spills, wait until it evaporates before

starting engine.

STARTING

WARNING

•Do not use pressurized starting fluids.

•Vapors are flammable.

OIL PRESSURE SWITCH

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.)

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.)

♦Use correct type of oil for expected starting

temperature. (See Oil.)

♦Remove external equipment/engine loads. (See

equipment operating instructions.)

♦Start lawn mower on hard surface or over previously

cut grass.

♦Periodically remove grass buildup under mower

deck. (See Maintenance.)

♦After engine has started, let it warm up several

seconds to several minutes, depending on outside

temperature.

♦For maximum performance and life, operate engine

with choke in RUN and throttle in FAST.

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STARTING AND STOPPING

REWIND (MANUAL) STARTER (auxiliary)

TO START ENGINE

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

[2] Open fuel shut-off valve

(if equipped) 1/4 turn.

[3] If choke and throttle controls are

separate, move choke control to

CHOKE. Move throttle to FAST.

[4] If choke and throttle are on the

same control, move control to

CHOKE or START

Choke Throttle Choke/throttle control

1/4 TURN

[5] Insert key and

turn to RUN.

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

felt, then pull rapidly to start engine and avoid

kickback.

WARNING [7] Let engine warm up.

If choke equipped:

Slowly adjust toward

RUN position. Wait

until engine runs

smoothly before each

choke adjustment.

TO STOP ENGINE

[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).

1/4 TURN

CAUTION: Do not stop

engine by moving choke

control to CHOKE.

Backfire, fire or engine

damage could occur.

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STARTING AND STOPPING

ELECTRIC (KEY) STARTER (if equipped)

TO START ENGINE

[1] Check oil level.

[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

Choke Throttle Choke/throttle control

[4] Open fuel shut-off

valve (if equipped).

[5] Insert key and

turn to START.

CAUTION:

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.

[6] Let engine warm up.

If choke equipped:

Slowly adjust toward

RUN position. Wait

until engine runs

smoothly before each

choke adjustment.

1/4 TURN

TO STOP ENGINE

[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).

1/4 TURN

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