Briggs & Stratton Vanguard 430000 Manuale utente

POST OFFICE BOX 702

MILWAUKEE, WI 53201 USA

BRIGGS&STRATTON

CORPORATION

MS -0750 -5/10

www.ThePowerPortal.com (Dealers)

BRIGGSandSTRATTON.COM (consumers)

272147 - Vanguard ™Single Cylinder OHV Air-Cooled Engines

272144 - Vanguard ™Twin Cylinder OHV Air-Cooled Engines

275429 - Vanguard ™Twin Cylinder OHV Liquid-Cooled Engines

MS-1055 - Vanguard ™3-Cylinder OHV Liquid-Cooled Diesel Engines

Other Briggs & Stratton

Commercial Power Repair Manuals:

Briggs & Stratton VANGUARD™3-CYLINDER OHV LIQUID-COOLED GASOLINE ENGINES 5/10

Vanguard

™3-Cylinder OHV

Liquid-Cooled Gasoline Engines

Quality Starts With A

Master Service Technician

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 430000

• MODEL 580000

SECTION 1 - Safety

SECTION 2 - Cylinder Heads and Valves

SECTION 3 - Governor, Timing Gears, and Gear Case

SECTION 5 - Cylinder Block Disassembly

SECTION 6 - Cylinder Block Inspection and Repair

SECTION 7 - Crankshaft, Camshaft, and Bearings

SECTION 8 - Pistons, Rings, and Connecting Rods

SECTION 9 - Cylinder Block Assembly

SECTION 10 - Fuel System and Related Components

SECTION 11 - Ignition, Electrical System

SECTION 12 - Lubrication System

SECTION 4 - Flywheel and Rear Seal Retainer

SECTION 13 - Cooling System

SECTION 14 - Engine Specifications

THISPROPER SERVICE AND REPAIR IS IMPORTANT

TO THE SAFE, ECONOMICAL AND RELIABLE

SECTION 1 - SAFETY AND MAINTENANCE

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

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

Running engines produce heat.

Severe burns can occur on contact.

• Allow muffler, engine cylinder fins, and

radiator to cool before touching.

• Remove accumulated combustibles from

muffler area and cylinder area.

• 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 system is equipped

with a spark arrester, as defined in Section

4442, maintained in effective working

order. Other States and Federal jurisdic-

tions may have similar laws. Contact the

original equipment manufacturer, retailer,

or dealer to obtain spark arrester

designed for the exhaust system installed

on this engine.

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-venti-

lated area.

• Do not overfill fuel tank. To allow for

expansion of the gasoline, 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 fre-

quently for cracks or leaks. Replace if nec-

essary.

• 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 position. 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

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 termi-

nal.

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

entangled 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

Damaged, worn, or loose fuel compo-

nents can leak fuel. Explosion or fire

could result.

• All fuel components should be in good

condition 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

regularly 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

rapidly to avoid kickback.

• Remove all external equipment/engine

loads before starting engine.

• Direct-coupled equipment components,

such as but not limited to blades, impel-

lers, 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.

SECTION 2 - CYLINDER HEAD AND VALVES

REMOVE CYLINDER HEAD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9

DISASSEMBLE CYLINDER HEAD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -10

REMOVE VALVES - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -11

INSPECT CYLINDER HEAD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -12

DISASSEMBLE ROCKER ARM SHAFT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -15

ASSEMBLE ROCKER ARM SHAFT- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -16

ASSEMBLE CYLINDER HEAD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -17

INSTALL CYLINDER HEAD - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -18

ADJUST VALVES- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -20

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