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FOREWORD
The information, procedures and specifications provided in this repair manual are current as of the date of
publication and subject to change without notice. Appropriate changes will be included in the next revision of this
manual.
Note: Manufacturing standards may vary from service specifications. Always refer to the service procedures and
specifications in this manual when engine service is required.
GENERAL REPAIR INSTRUCTIONS
Before attempting a B&SD engine overhaul or a tune-up, it is necessary that your shop be equipped with proper tools,
equipment and mechanics who are thoroughly familiar with Briggs & Stratton engine design and construction. With
your shop thus equipped, this book will serve as a guide in performing the various steps necessary to do a complete
and satisfactory job. Use only genuine replacement parts. Always use recommended service tools.
This engine is designed and manufactured using metric dimensions. The English equivalents provided may have been
rounded up or down to the closest numerical interpretation of the metric dimension.
The terms Inspect, Check, Test and Replace are used as follows:
INSPECT – Visual inspection – look for signs of wear, scoring, cracks, stripped threads, etc.
CHECK – Measure by means of plug gauges, micrometer, feeler gauges, scale, etc.
TEST – Analyze with proper test equipment.
REPLACE – This usually means to take off the old part and reassemble it or replace it with a new one.
Disassembly
As engine is being disassembled, mark parts which are part of an assembly, to prevent interchanging. Arrange parts in
an orderly manner, keeping parts which are an assembly together.
Visually inspect each part as it is removed – look for signs of wear, scoring, cracks, stripped threads, etc.
Inspection and Measurement
Carefully check parts that can be reconditioned and/or reused.
Replace any parts that are not within specification.
Clean parts to be reused
Clean or wash disassembled parts.
Assemble
Use a torque wrench to torque bolts and nuts to required specifications.
Replace all gaskets, cotter pins, oil seals and O-rings.
ABBREVIATIONS
Abbreviation Meaning
ASSY Assembly
BDC Bottom Dead Center
DT Diesel Turbocharger
EX Exhaust
ID Inside Diameter
IN Intake
LH Left Hand
MP Multi-purpose
Abbreviation Meaning
OD Outside Diameter
OPT Optional
O/S Oversize
RH Right Hand
SAE Society of Automotive
Engineers
T/C Turbocharger
TDC Top Dead Center
U/S Undersize
Copyright "2002 by Briggs & Stratton Corporation
All rights reserved. No part of this material may be reproduced or
transmitted, in any form or by any means, electronic or mechanical,
including photocopying, recording or by any information storage
and retrieval system, without permission in writing from Briggs &
Stratton Corporation.