FOREWORD

Before attempting an engine overhaul or a tune-up, it is necessary that your shop be equipped with power tools, equipment and mechanics who are thoroughly familiar with Briggs & Stratton engine design and construction. With you shop thus equipped, this book will serve as a guide in performing the various steps necessary to do a complete and satisfactory job.

In order to keep all tables as simple as possible, only the basic engine models are listed unless there is a difference between them and special models.

To make inspection of parts simple and accurate only the sizes at which they should be rejected are shown. This eliminates the necessity for figuring allowances for wear, etc. If a part is worn larger inside dimension such as magneto bearings or smaller such as crankshaft journal surfaces than the given size, they should be rejected and replaced with new parts.

Always use plug gauges wherever possible to eliminate doubt and possible mistakes. You will find plug gauges illustrated in Section 13. Special repair parts, valve guides, valve seat inserts, contact point plunger bushing etc. are not listed in the regular Parts Lists and part numbers will be found only in this book.

Illustration do not necessarily designate a particular model, and should only be used to identify repair procedures.