Familiarization &
Troubleshooting Guide

GENERATOR
Repair Manual

Same manual as used by Authorized Briggs & Stratton Service Centers.

Contains over 122 pages and loaded with photos & illustrated graphics on Briggs & Stratton Generators.

This is the Newest available troubleshooting & repair manual for Generators by Briggs & Stratton.

Generator

Fundamentals

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Basic Electricity 3

Magnetism and Electricity 3

Electro-Motive Force 4

Electromagnetism 7

Direct Current (DC) 8

Alternating Current (AC) 8

Volt 10

Ampere 10

Ohm 10

Ohm's Law 11

The Watt 11

Electrical Formulas 12

The Series Circuit 13

The Parallel Circuit 13

The Series-Parallel Circuit 14

Simple Alternator 17

Simple Alternator Operation 17

Generator Components

And Systems

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Generator Components 19

Rotor Assembly 20

Stator Assembly 21

Switches 23

Fuses 26

Circuit Breakers 26

Solenoids 27

Relays 28

Resistors 29

Transformers 31

Condensers 32

Rectifiers 33

Transistors 34

Brushes and Brush Holders 35

Voltage Regulator 37

Generator Systems 41

Revolving Field Excitation Methods 42

Direct Excitation 42

The Brushless Excitation Method 44

Field Boost Assembly 45

Power Factor 46

Oil Pressure Switch On

"GN" Engines 49

Typical Automatic Idle

Control System 50

Early V-Twin Engine Idle Control 51

Idle Control on "GN"

190,220,320,360, & 410 ENGINES 51

"XL" And "MC" Idle Control On

480 & 570 V-Twin Engines 53

Generator Diagnostics And

Adjustments

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Troubleshooting Idle Controls 56

Troubleshooting Flowchart For

"Direct Excited" (Brush Type)

Generators 68

Troubleshooting Flowchart For

(Brush Type) Generators With "Two

Board" Regulation 76

Troubleshooting Flowchart For

"Sincro@ Wound" (Brushless

Type) Generators 84

Voltage Regulator Adjustments 90



Generator Assemblies

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BSPP Wound Generators 94

Disassembly 94

Assembly 101

Sincro@ Wound Generators 109

Disassembly 109

Assembly 112

Appendix A

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Torque Table 117

Receptacles And Plugs 118

Glossary 120

Part #: 86262GS