Specifications

Contents
Page
CHAPTER 1. GENERAL INFORMATION ................................................................................................................................... 1
SECTION 1. ENGINE IDENTIFICATION ............................................................................................................................. 1
SECTION 2. ENGINE CARE ............................................................................................................................................... 2
CHAPTER 2. AIR CLEANERS, CARBURETORS, GOVERNORS AND LINKAGE ................................................................... 4
SECTION 1. AIR CLEANERS .............................................................................................................................................. 4
SECTION 2. GENERAL CARBURETOR INFORMATION .................................................................................................. 5
SECTION 3. TECUMSEH CARBURETORS ....................................................................................................................... 6
SECTION 4. WALBRO CARBURETORS .......................................................................................................................... 10
HH80 - 120, VH80 - 100 .............................................................................................................................................. 10
SECTION 5. OVERHEAD VALVE ENGINE CARBURETORS .......................................................................................... 13
SECTION 6. GOVERNORS ............................................................................................................................................... 16
SECTION 7. IMPULSE FUEL PUMP ................................................................................................................................. 19
CHAPTER 3. REWIND STARTERS, ELECTRIC STARTERS, TROUBLESHOOTING AND GENERATORS......................... 20
SECTION 1. REWIND STARTERS.................................................................................................................................... 20
SECTION 2. ELECTRIC STARTERS ................................................................................................................................ 22
SECTION 3. 12 VOLT STARTER TROUBLE SHOOTING CHART................................................................................... 25
CHAPTER 4. GENERAL VALVE INFORMATION, CYLINDER HEAD AND BREATHER ASSEMBLY ...................................27
SECTION 1. GENERAL VALVE INFORMATION ............................................................................................................... 27
SECTION 2. CYLINDER HEAD ......................................................................................................................................... 31
SECTION 3. BREATHER ASSEMBLIES ........................................................................................................................... 32
CHAPTER 5. PISTON AND RINGS, CONNECTING RODS AND CRANKSHAFTS ................................................................33
SECTION 1. PISTON AND RINGS .................................................................................................................................... 33
SECTION 2. CONNECTING RODS................................................................................................................................... 35
SECTION 3. CRANKSHAFTS ........................................................................................................................................... 36
CHAPTER 6. CAMSHAFT, BEARINGS AND SEALS............................................................................................................... 37
SECTION 1. CAMSHAFT ..................................................................................................................................................37
SECTION 2. BEARINGS.................................................................................................................................................... 38
SECTION 3. SEALS........................................................................................................................................................... 42
CHAPTER 7. DYNA-STATIC
®
BALANCING SYSTEM .............................................................................................................43
CHAPTER 8. IGNITION SYSTEMS, CHARGING SYSTEMS BATTERY SERVICE and
ELECTRICAL CONTROL PANELS .......................................................................................................................................... 45
SECTION 1. IGNITION SYSTEMS .................................................................................................................................... 45
SECTION 2. CHARGING SYSTEMS................................................................................................................................. 48
SECTION 3. BATTERY SERVICE ..................................................................................................................................... 53
SECTION 4. ELECTRICAL CONTROL PANELS .............................................................................................................. 56
CHAPTER 9. TROUBLESHOOTING ........................................................................................................................................61
CHAPTER 10. 8 H.P. & LARGER ENGINE SPECIFICATIONS AND TORQUES ....................................................................66
SECTION 1. CROSS REFERENCE LIST FOR TABLE OF SPECIFICATIONS ................................................................ 66
SECTION 2. TORQUE SPECIFICATIONS ........................................................................................................................ 70
8 H.P. & LARGER ENGINES (EXCEPT VALVE-IN-HEAD)......................................................................................... 70
SECTION 3. VALVE-IN-HEAD ENGINE SPECIFICATIONS ............................................................................................. 71
SECTION 4. TORQUE SPECIFICATIONS ........................................................................................................................ 73
VALVE-IN-HEAD.......................................................................................................................................................... 73
CHAPTER 11. EDUCATIONAL MATERIALS AND TOOLS......................................................................................................74
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C Tecumseh Products Company
1998