Tecumseh ECV100 - 120 Technician's Handbook page 4

IDENTIFICATION OF TECUMSEH IGNITION SYSTEMS ........................................................................... 64
COMPONENTS ............................................................................................................................................ 64
IGNITION TROUBLESHOOTING ................................................................................................................ 66
TESTING PROCEDURE .............................................................................................................................. 67
SERVICE ..................................................................................................................................................... 68
SPARK PLUG SERVICE .............................................................................................................................. 68
CONDITIONS CAUSING FREQUENT SPARK PLUG FOULING ................................................................ 68
IGNITION TIMING PROCEDURE ................................................................................................................ 68
SERVICE TIPS ............................................................................................................................................. 71
CHAPTER 9 INTERNAL ENGINE AND CYLINDER ................................................................................... 72
GENERAL INFORMATION .......................................................................................................................... 72
OPERATION ................................................................................................................................................ 72
4-CYCLE ENGINE THEORY ....................................................................................................................... 72
LUBRICATION SYSTEMS ........................................................................................................................... 73
COUNTERBALANCE SYSTEMS ................................................................................................................. 73
COMPONENTS ............................................................................................................................................ 74
ENGINE OPERATION PROBLEMS ............................................................................................................. 75
TESTING ...................................................................................................................................................... 77
ENGINE KNOCKS ....................................................................................................................................... 77
ENGINE OVERHEATS ................................................................................................................................ 77
SURGES OR RUNS UNEVENLY ................................................................................................................ 77
ENGINE MISFIRES ...................................................................................................................................... 77
ENGINE VIBRATES EXCESSIVELY ........................................................................................................... 78
BREATHER PASSING OIL .......................................................................................................................... 78
EXCESSIVE OIL CONSUMPTION .............................................................................................................. 78
LACKS POWER ........................................................................................................................................... 78
SERVICE ..................................................................................................................................................... 79
DISASSEMBLY PROCEDURE .................................................................................................................... 79
CYLINDERS ................................................................................................................................................. 81
CYLINDER HEADS ...................................................................................................................................... 82
PISTONS, RINGS AND CONNECTING RODS ........................................................................................... 82
CRANKSHAFTS AND CAMSHAFTS ........................................................................................................... 84
VALVES ....................................................................................................................................................... 85
CRANKCASE BREATHERS ........................................................................................................................ 86
CYLINDER COVER, OIL SEAL, AND BEARING SERVICE ........................................................................ 87
CRANKSHAFT BEARING SERVICE ........................................................................................................... 88
COUNTERBALANCE SERVICE .................................................................................................................. 89
FLYWHEEL SERVICE ................................................................................................................................. 89
CHAPTER 10 ENGINE SPECIFICATIONS ................................................................................................. 90
FOUR CYCLE TORQUE SPECIFICATIONS ............................................................................................... 91
ENGINE SPECIFICATIONS STANDARD POINT IGNITION ....................................................................... 93
SOLID STATE AND EXTERNAL IGNITION ................................................................................................. 97
CHAPTER 11 EDUCATION MATERIALS AND TOOLS ........................................................................... 102
DECIMAL / FRACTION CONVERSIONS ................................................................................................... 105
SEARS CRAFTSMAN CROSS REFERENCE SUPPLEMENT INCLUDED IN BACK OF BOOK
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