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Contents
CHAPTER 1
Introduction to Two-Stroke Engines 1
Introduction 2
The Two-Stroke Engine Repair
Technician 3
Levels of Usage for Two-Stroke Handheld
Equipment 4
Employment Opportunities for Outdoor
Power Equipment Technicians 5
Outdoor Power Equipment Shop 5
On-Site Repair Facilities 6
Technician-Owned Shop 6
Training for OPE Technicians 7
Associations and Organizations 7
CHAPTER 2
Safety 11
Introduction 12
General Shop Safety 12
Gasoline Safety 13
Electrical Safety 13
Personal Protective Equipment 14
Fire Safety 17
Hand Tool Safety 19
Power Tool Safety 20
Safety Data Sheets 20
Disposing of Hazardous Wastes 22
Methods of Disposal 23
Operating Equipment Safely 23
Safety Alerts 24
Customer Safety Training 25
Organizations Regulating Safety for the
Two-Stroke Industry 25
CHAPTER 3
Fasteners 31
Introduction 32
Threaded Fasteners 32
Bolts and Screws 33
Nuts 43
Washers 45
Thread Adhesive 46
Thread Repair 46
Torque System 47
Torque the Fasteners 48
Nonthreaded Fasteners 49
Clamps and Clasps 49
Dowel Pins and Sleeves 51
Retainers 51
CHAPTER 4
Tools 55
Introduction 56
Hand Tools 56
Wrenches 56
Pliers 62
Screwdrivers 62
Hammers 63
Punches 64
Vise 65
Metalworking Tools 65
Heat Gun 69
Electrical Testin g and Service Tools 70
Cleaning Tools 71
Measuring Tools 72
Engine Service and Repair Tools 76
CHAPTER 5
The Two-Stroke Cycle Engine 81
Introduction 82
Cycles and Strokes 83
The Four Events in a Two-Stroke
Engine 83
The Two Strokes in a Two-Stroke
Engine 83
Types of Two-Stroke Engines 83
The Piston Ported Engine 83
The Reed Valve Engine 84
Two-Stroke Engine Components 85
Cylinder 85
Crankcase 87
Piston 89
Connecting Rod and Crankshaft 91
Bearings 93
Muffler 94
Ignition Coil 94
Flywheel 95
Rewind Starter 96
PTO 99
Carburetor 101
Air Filter 101
Fuel Tank 103