Yanmar 1GM User Manual page 4

· CHAPTER THREE
OPERATION, LUBRICATION, MAINTENANCE AND TUNE-UP 42
Fuel requirements
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42
Preoperational checks 42
Starting checklist 43
Stopping the engine 44
Emergency engine stopping 44
Post-operational checks 44
CHAPTER fOUR
Engine maintenance and lubrication 44
Cooling system 52
Battery 56
Engine tune-up 57
Transmission 60
LAY-UP AND FITTING OUT .•....•••...••••..•••.....•
AI • • • • • • • • • • • • • • • • •
63
Lay-up '" 63
Cooling system draining 64
CHAPTER
nvs
Fitting out 66
SINGLE-CYLINDER ENGINES 68
Diesel engine fundamentals 68
Engine serial number and code 70
Replacement parts 70
Engine removal precautions 70
Valve cover 71
Breather assembly 71
Decompression mechanism 73
Cylinder head 73
Rocker shaft assembly 76
Valves and valve seats 77
Push rods 79
Piston/connecting rod assembly 79
Timing gearcase 85
Lubrication system 86
Flywheel 89
Drive disc 91
Crankshaft. 91
Main bearings 93
Camshaft 93
Cylinder block 95
CHAPTER SIX
MULTICYLINDER ENGINES 99
Engine serial number and code 99
Replacement parts 100
Engine 100
Valve cover 101
Breather assembly 101
Decompression mechanism . . . . . . . . . . . . . . . . . . . 102
Exhaust manifold 103
Cylinder head 105
Rocker shaft assembly 109
Valves and valve seats 110
Push rods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Piston/connecting rod assembly 113
Timing gearcase . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Lubrication system 120
Flywheel 122
Drive disc 123
Crankshaft. 123
Main bearings 126
Camshaft 127
Cylinder block 128
CHAPTER SEVEN
fUEL INJECTION AND GOVERNOR SYSTEMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • 38
Fuel injection fundamentals 138 Fuel injection pump 149
Fuel injection system bleeding 142 Fuel transfer pump 150
Fuel injection timing 144 Fuel lines 151
Fuel injector 146 Governor system 152