Table of Contents
Introduction 5
Things That Make a Small Engine Run 6
Defining the Small Engine 6
Five Basic Small-Engine Systems 8
The Compression System 12
The 4-Stroke Cycle 14
Overhead Valves (OHV): The New Standard 16
Fuel System 17
Into the Carburetor 18
Ignition System 20
Lubrication & Cooling System 22
Braking System 26
Electrical System 27
Tools to Keep Your Small Engine Happy 28
Safe Small-Engine Servicing 32
Diagnosing & Troubleshooting 35
Learning How to Diagnose a Motor's Symptoms 36
Easy but Important Maintenance 43
End-of-Season Maintenance 45
Checking & Changing Oil on a 4-Stroke 48
Servicing Spark Plugs 52
Servicing Air Cleaners 54
More Smart Maintenance 58
Basic Engine Repairs 67
Basic Repairs 68
Removing Debris 69
Servicing the Fuel Tank 73
Servicing the Fuel Filter 75
Servicing the Fuel Pump 78
Servicing the Carburetor 80
Adjusting the Governor 84
Replacing the Rewind 90
Inspecting & Changing the Muffler 92
Advanced Repairs 97
Overhauling Carburetors 100
Inspecting the Flywheel & Key 108
Replacing the Ignition 110
Testing the Electrical System 114
Removing Carbon Deposits 118
Servicing the Valves 122
Servicing the Brake 132
2-Stroke Power Equipment 138
Index 144