Tecumseh HHM80 Technician's Handbook

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SERVICE .....................................................................................................................................................27
GOVERNOR ADJUSTMENT .......................................................................................................................27
GOVERNOR ADJUSTMENT PROCEDURE FOR SHORT BLOCK INSTALLATIONS ...............................27
GOVERNOR GEAR AND SHAFT SERVICE ...............................................................................................28
SPEED CONTROLS AND LINKAGE ...........................................................................................................29
CHAPTER 5 REWIND STARTERS .............................................................................................................35
GENERAL INFORMATION ..........................................................................................................................35
OPERATION ................................................................................................................................................35
COMPONENTS............................................................................................................................................35
SERVICE .....................................................................................................................................................35
ROPE SERVICE ..........................................................................................................................................35
RETAINER REPLACEMENT .......................................................................................................................36
STYLIZED REWIND STARTER (TVS, HM, TVM, TVXL), AND STAMPED STEEL STARTER
(HM, VM, TVM, TVXL).............................................................................................................................36
STYLIZED REWIND STARTER WITH PLASTIC RETAINER ......................................................................37
STANDARD STAMPED STEEL AND CAST ALUMINUM STARTER (HM, VM) ..........................................38
VERTICAL PULL STARTER HORIZONTAL ENGAGEMENT TYPE ...........................................................39
VERTICAL PULL STARTER VERTICAL ENGAGEMENT TYPE .................................................................40
CHAPTER 6 ELECTRICAL SYSTEMS .....................................................................................................42
GENERAL INFORMATION ..........................................................................................................................42
OPERATION ................................................................................................................................................42
STARTING CIRCUIT AND ELECTRIC STARTERS .................................................................................... 42
CHARGING CIRCUIT .................................................................................................................................. 42
CONVERTING ALTERNATING CURRENT TO DIRECT CURRENT ..........................................................43
HALF WAVE RECTIFIER SINGLE DIODE ..................................................................................................43
FULL WAVE RECTIFIER BRIDGE RECTIFIER........................................................................................... 43
COMPONENTS............................................................................................................................................43
BATTERY.....................................................................................................................................................43
WIRING ........................................................................................................................................................43
ELECTRICAL TERMS..................................................................................................................................44
BASIC CHECKS...........................................................................................................................................45
TROUBLESHOOTING ELECTRICAL STARTER CIRCUIT FLOW CHART ................................................46
TROUBLESHOOTING ELECTRICAL CHARGING CIRCUIT FLOW CHART..............................................47
TESTING PROCEDURE ..............................................................................................................................48
STARTING CIRCUIT....................................................................................................................................48
CHARGING CIRCUIT .................................................................................................................................. 48
VOLTAGE REGULATIONS..........................................................................................................................56
LOW OIL SHUTDOWN SWITCHES ............................................................................................................56
SERVICE .....................................................................................................................................................57
12 VOLT OR 120 VOLT ELECTRIC STARTERS WITH EXPOSED SHAFT ...............................................57
12 VOLT D.C. OR 120 VOLT A.C. ELECTRIC STARTERS WITH THE STARTER GEAR UNDER
THE CAP ASSEMBLY.............................................................................................................................57
INSPECTION ...............................................................................................................................................58
CHAPTER 7 FLYWHEEL BRAKE SYSTEMS.............................................................................................59
GENERAL INFORMATION ..........................................................................................................................59
OPERATION ................................................................................................................................................59
BOTTOM SURFACE SYSTEM ....................................................................................................................59
INSIDE EDGE SYSTEM ..............................................................................................................................60
COMPONENTS............................................................................................................................................60
SERVICE .....................................................................................................................................................61
FLYWHEEL REMOVAL ............................................................................................................................... 61
BRAKE LEVER AND PAD ...........................................................................................................................61
IGNITION GOUNDOUT TERMINAL ............................................................................................................61
STARTER INTERLOCK SWITCH ................................................................................................................62
CONTROL CABLE ....................................................................................................................................... 62
BRAKE BRACKET REPLACEMENT ...........................................................................................................62
CHAPTER 8 IGNITION ................................................................................................................................63
GENERAL INFORMATION ..........................................................................................................................63
OPERATION ................................................................................................................................................63
SOLID STATE IGNITION SYSTEM (CDI) ....................................................................................................63
MAGNETO IGNITION SYSTEM (POINTS) ..................................................................................................63

Tecumseh HHM80 Specifications

General

Brand	Tecumseh
Model	HHM80
Category	Engine
Language	English