Small engine mechanics
William H. Crouse
1980 M

Contents
Preface v
To the Student
PART 1 SHOPWORK AND SHOP TOOLS 1
1 Opportunities for the Sma11Engine Technician…………………………. 2
2 Shop work and Shop Manuals……………………………………...…..…. 5
3 Safety in the Shop…………………………………………………………… 10
4 Fasteners ……………………………………………………………………..13
5 Hand Tools……………………………………………………………...….. 20
6 Cutting Tools……………………………………………………………..... 27
7 Measuring Tools…………………………………………………………… 34
PART 2 SMALL ENGINES……………………………………………..... 45
8 Engine Principles………………………………………………………….. 46
9 TwoCyc1eEflgine Operation…………………………………………...… 53
10 Construction ……………………………………………………………….85
11 FourCyc1eEngine Operation…………………………………………… 81
12 Construction ……………………………………………………………….81
13 Wankel Engines…………………………………………………………… 91
14 Engine Measurements ……………………………………………………99
PART 3 ENGINE SYSTEMS…………………………………………  …. 109
15 Engine Lubrication ………………………………………………………110
16 Gasoline …………………………………………………………………..120
17 Fuel Systems for Small Engines ………………………………………..127
18 Fuel-System Service ……………………………………………………..141
19 Engine Cooling Systems………………………………………………… 152
PART 4 ELECTRICITY AND ELECTRICAL SYSTEMS… ……. 161
20 Basic Electricity………………………………………………………… 162
21 Batteries…………………………………………………………………... 171
22 Battery Service…………………………………………………………… 178
23 Starting Systems for Small Engines…………………………………… 188
24 Servicing Small-Engine Starters………………………………………. 203
25 Ignition Systems………………………………………………………….. 220
26 Ignition-System Service ………………………………………………….239
27 Charging Systems……………………………………………………….. 258
28 Servicing Small-Engine Charging Systems …………………………...271
PART 5 ENGINE SERVICE ……………………………………………..289
29 Troubleshooting Small Engines……………………………………….. 290
30 Operating and Maintaining Small Engines………………………….. 300
31 Servicing Two-Cycle Engines ………………………………………….310
32 Servicing Four-Cycle Engines………………………………………… 328
Glossary ………………………………………………………………………358