Briggs & Stratton 700 DOV Series Instrucciones de funcionamiento

700/750 SERIES DOV AIR-COOLED ENGINES

273521 Twin Cylinder OHV Air-Cooled Engines

276781 Single Cylinder OHV Air-Cooled Engines

271172 Twin Cylinder L-Head Air-Cooled Engines

270962 Single Cylinder L-Head Air-Cooled Engines

276535 Two-Cycle Snow Engines

CE8069 Out of Production Engines (1919-1981)

Repair Manuals for other

Briggs & Stratton Engines:

700/750 Series DOV

Air-Cooled Engines

POST OFFICE BOX 702

MILWAUKEE, WI 53201 USA

BRIGGS&STRATTON

CORPORATION

Part No. 277527-12/09

Quality Starts With A

Master Service Technician

www.ThePowerPortal.com (Dealers)

BRIGGSandSTRATTON.COM (Consumers)

Briggs & Stratton 12/09

FORWARD

This manual was written to assist engine technicians and service personnel with the repair and

maintenance procedures for Briggs & Stratton engines. It assumes that persons using this manual have

been properly trained in and are familiar with the servicing procedures for these products, including the

proper use of required tools and safety equipment and the application of appropriate safety practices.

Persons untrained or unfamiliar with these procedures or products should not attempt to perform such

work.

Proper maintenance and repair is important to safe, reliable operation of all engines and engine-driven

systems. The troubleshooting, testing, maintenance, and repair procedures described in this manual are

appropriate for the Briggs & Stratton engines described herein. Alternative methods or procedures may

pose risk to personal safety and the safety and/or reliability of the engine and are not endorsed or

recommended by Briggs & Stratton.

All information, illustrations, and specifications contained in this manual were based on the data available

at the time of publication. Briggs & Stratton Corporation reserves the right to change, alter, or otherwise

improve the product or the product manuals at any time without prior notice.

Briggs & Stratton offers two complementary publications to enhance understanding of engine technology,

maintenance, and repair. (Neither publication, however, is a substitution for a recognized training program

for engine technicians.)

• For consumers, Small Engine Care & Repair (p/n 274041) provides a comprehensive overview of how

small air-cooled engines work, basic troubleshooting, and step-by-step maintenance procedures.

• For engine technicians and consumers alike, an in-depth study of engine theory and operation can be

found in the textbook Small Engines (p/n CE8020).

Both publications can be purchased at BRIGGSandSTRATTON.COM or through a local Authorized Briggs

& Stratton Service Dealer.

No part of this manual may be reproduced or transmitted in any form or by any means, electronic or

mechanical, including photocopying or recording by any information storage and retrieval system, without

prior written permission from Briggs & Stratton Corporation.

This engine repair manual includes the following

engine models:

• MODEL 090600

• MODEL 100600

• MODEL 100800

SECTION 1 - Safety, Maintenance and Adjustments

SECTION 2 - Troubleshooting

SECTION 3 - Exhaust Systems

SECTION 5 - Governor Systems

SECTION 6 - Cylinder Heads and Valves

SECTION 7 - Starters

SECTION 8 - Lubrication Systems

SECTION 9 - Cylinders, Covers and Sumps

SECTION 10 - Crankshafts, Camshafts, Balancing Systems, and Gear Reductions

SECTION 11 - Pistons, Rings and Connecting Rods

SECTION 12 - Engine Specifications

SECTION 4 - Fuel Systems and Carburetion

THISPROPER SERVICE AND REPAIR IS IMPORTANT

TO THE SAFE, ECONOMICAL AND RELIABLE

SECTION 1 - SAFETY, MAINTENANCE, AND ADJUSTMENTS

SAFETY INFORMATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4

ENGINE MAINTENANCE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

FUEL AND OIL RECOMMENDATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

MAINTENANCE CHART - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

OIL CHANGE- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8

AIR FILTER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8

SPARK PLUG - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8

COOLING SYSTEM - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9

CHARGING BATTERY - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9

COMBUSTION CHAMBER - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -10

ENGINE ADJUSTMENTS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -10

THROTTLE CABLE ADJUSTMENT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -10

GOVERNOR ADJUSTMENTS- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -10

ADJUST VALVE CLEARANCE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -12

ADJUST READYSTART CHOKE LINK- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -12

ADJUST ARMATURE AIR GAP- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -13

ADJUST ALTERNATOR AIR GAP - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -14

FLYWHEEL BRAKE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -15

SAFETY INFORMATION

This repair manual contains safety information

that is designed to:

• Make you aware of hazards associated

with engines.

• Inform you of the risk of injury associated

with those hazards.

• Tell you how to avoid or reduce the risk of

injury.

Signal Words in Safety Messages

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, could result in minor or

moderate injury.

NOTICE indicates a situation that could

result in damage to the product.

Prior to work, read and understand the section(s)

of this manual that pertain to the job. Follow all

safety warnings.

• Always use fresh gasoline. Stale fuel can

cause gum deposits in the carburetor

and cause leakage, flow restrictions, or

other problems.

• Check fuel lines and fittings frequently for

cracks or leaks and replace if necessary.

Hazard Symbols and Meanings

WARNING

Before attempting to service this equipment,

read and understand this manual and the

operating instructions of the engine and the

equipment it powers.

Failure to follow instructions could result in

property damage, serious injury (including

paralysis) or even death.

FIRE EXPLOSION ELECTRIC

SHOCK

EXPLOSIVE

PRESSURE

HOT

SURFACE GOGGLES

ENTANGLEMENT KICKBACK AMPUTATION

TOXIC

FUMES

READ

MANUAL

CHEMICAL

BURNS

WARNING

Battery posts, terminals, and related accesso-

ries contain lead and lead compounds - chem-

icals known to the State of California to cause

cancer and reproductive harm. Wash hands

after handling.

WARNING

Certain components in this product and its

related accessories contain chemicals known

to the State of California to cause cancer, birth

defects, or other reproductive harm. Wash

hands after handling.

WARNING

Briggs & Stratton does not approve or autho-

rize the use of these engines on 3-wheel All

Terrain Vehicles (ATVs), motor bikes, fun/rec-

reational go-karts, aircraft products, or vehi-

cles 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.

WARNING

The engine exhaust from this product contains

chemicals known the State of California to

cause cancer, birth defects, and other repro-

ductive harm.

WARNING

Fuel and its vapors are extremely flam-

mable and explosive.

Fire or explosion can cause severe

burns or death.

When adding fuel:

• Turn engine OFF and let engine cool for at least 2 minutes

before removing the fuel cap.

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

• Do not overfill fuel tank. To allow for expansion of the gaso-

line, do not fill above the bottom of the fuel tank neck.

• 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.

• If fuel spills, wait until it evaporates before starting engine.

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 (if equipped) to OPEN/RUN posi-

tion. Place throttle (if equipped) in FAST and crank until

engine starts.

When operating equipment:

• Do not tip engine or equipment at an angle which would

cause fuel to spill.

• Do not choke carburetor to stop engine.

• Never start or run the engine with the air cleaner assembly

(if equipped) or the air filter (if equipped) removed.

When changing oil:

• If you drain the oil from the top oil fill tube, the fuel tank must

be empty or fuel can leak out and result in a fire or explosion.

When transporting equipment:

• Transport with fuel tank empty or with fuel shut-off valve set

to OFF.

When storing gasoline or equipment with fuel in the tank:

• Store away from furnaces, stoves, water heaters, or other

appliances that have a pilot light or other ignition source

because they can ignite gasoline vapors.

WARNING

Running engines produce heat. Engine

parts, especially mufflers, 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 fins, and radiator

to cool before touching.

• Remove accumulated debris from muffler area

and cylinder fins.

• It is a violation of California Public Resource

Code, Section 4442, to use or operate the

engine on any forest-covered, brush-covered,

or grass-covered land unless the exhaust sys-

tem is equipped with a spark arrester, as

defined in Section 4442, maintained in effective

working order. Other States and Federal juris-

dictions may have similar laws. Contact the

original equipment manufacturer, retailer, or

dealer to obtain a spark arrester designed for

the exhaust system installed on this engine.

WARNING

Unintentional sparking can result in fire

or electrical shock.

Unintentional start-up can result in

entanglement, traumatic amputation, or

severe lacerations.

Before performing adjustments or repairs:

• Disconnect spark plug wire and keep it away

from spark plug.

• Disconnect the negative (-) battery terminal.

When testing for spark:

• Use approved spark plug tester.

• Do not check for spark with spark plug

removed.

WARNING

Engines give off carbon monoxide, an

odorless, colorless, poison gas.

Breathing carbon monoxide can cause

nausea, fainting, or death.

• Start and run engine outdoors.

• Do not start or run engine in an enclosed area,

even if doors and windows are open.

WARNING

Starting engine creates sparking.

Sparking can ignite nearby flammable

gases.

Explosion and fire could result.

• If there is a natural or LP gas leak in the area,

do not start engine.

• Do not use pressurized starting fluids because

vapors are flammable.

WARNING

Rotating parts can contact or entangle

hands, feet, hair, clothing, or accesso-

ries.

Traumatic amputation or severe lacera-

tions 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 entan-

gled in the equipment.

WARNING

Charging batteries produce hydrogen

gas. Do not store or charge a battery

near an open flame or device that uti-

lizes a pilot light or can create a spark.

WARNING

Kerosene and its vapors are extremely

flammable and should be handled with the

same precautions as gasoline.

WARNING

Damaged, worn, or loose fuel compo-

nents can leak fuel. Explosion or fire

could result.

• All fuel components should be in good condi-

tion and properly maintained.

• Repairs should only be made with factory

approved parts.

• Repair work should be done by a qualified

technician.

• Flexible supply lines should be checked regu-

larly to make sure they are in good condition.

WARNING

Rapid retraction of starter cord (kick-

back) will pull hand and arm toward

engine faster than you can let go.

Broken bones, fractures, bruises, or

sprains could result.

• When starting engine, pull the starter cord

slowly until resistance is felt and then pull rap-

idly to avoid kickback.

• Remove all external equipment/engine loads

before starting engine.

• Direct-coupled equipment components, such

as but not limited to blades, impellers, pulleys,

and sprockets, must be securely attached.

WARNING

Prolonged or repeated contact with used

motor oil could cause injury.

• Used motor oil has been shown to cause skin

cancer in certain laboratory animals.

• Thoroughly wash exposed areas with soap and

water.

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