TC/TM SERIES 2-Cycle Engines
This handbook covers repairs and adjustments not covered within the Operator’s Manual, and it is intended for individuals who have a general understanding of internal combustion engines, adequate training, experience and who practice proper tool usage. Service procedures should be clearly understood and practiced when servicing Tecumseh Engines.
CHAPTER 1 GENERAL INFORMATION...............................................................................1
GENERAL SAFETY PRECAUTIONS ..................................................................................................... 1
ENGINE IDENTIFICATION ..................................................................................................................... 3
OIL REQUIREMENTS............................................................................................................................. 5
FUEL REQUIREMENTS ......................................................................................................................... 6
TUNE-UP PROCEDURE ........................................................................................................................ 7
STORAGE............................................................................................................................................... 8
CHAPTER 2 AIR CLEANERS................................................................................................9
GENERAL INFORMATION ..................................................................................................................... 9
OPERATION ........................................................................................................................................... 9
TROUBLESHOOTING ............................................................................................................................ 9
SERVICE................................................................................................................................................. 9
PAPER FILTER REMOVAL AND REPLACEMENT.............................................................................. 10
POLYURETHANE FILTER REMOVAL AND SERVICE........................................................................ 10
CHAPTER 3 CARBURETORS AND FUEL SYSTEMS .......................................................11
GENERAL INFORMATION ................................................................................................................... 11
OPERATION ......................................................................................................................................... 11
FUEL PRIMERS.................................................................................................................................... 12
COMPONENTS..................................................................................................................................... 13
ENGINE TROUBLESHOOTING ........................................................................................................... 16
TROUBLESHOOTING CARBURETION—TC/TM SERIES .................................................................. 17
TESTING............................................................................................................................................... 19
SERVICE............................................................................................................................................... 19
CARBURETOR PRE-SET AND ADJUSTMENT................................................................................... 19
CARBURETOR DISASSEMBLY .......................................................................................................... 20
CARBURETOR INSPECTION .............................................................................................................. 20
CARBURETOR ASSEMBLY................................................................................................................. 21
FUEL TANK SERVICE.......................................................................................................................... 24
CHAPTER 4 GOVERNORS AND LINKAGE .......................................................................25
GENERAL INFORMATION ................................................................................................................... 25
OPERATION ......................................................................................................................................... 25
COMPONENTS..................................................................................................................................... 25
TROUBLESHOOTING .......................................................................................................................... 26
ENGINE OVERSPEEDING................................................................................................................... 26
ENGINE SURGING............................................................................................................................... 26
SERVICE............................................................................................................................................... 26
GOVERNOR ADJUSTMENT ................................................................................................................ 26
CHAPTER 5 REWIND STARTERS......................................................................................28
GENERAL INFORMATION ................................................................................................................... 28
OPERATION ......................................................................................................................................... 28
TC TYPE I ............................................................................................................................................. 28
TC TYPE II/TM ...................................................................................................................................... 28
COMPONENTS..................................................................................................................................... 28
SERVICE............................................................................................................................................... 28
DISASSEMBLY PROCEDURE ............................................................................................................. 28
ASSEMBLY PROCEDURE ................................................................................................................... 2
CHAPTER 6 IGNITION ........................................................................................................30
GENERAL INFORMATION ................................................................................................................... 30
OPERATION ......................................................................................................................................... 30
COMPONENTS..................................................................................................................................... 30
IGNITION TROUBLESHOOTING ......................................................................................................... 31
TESTING............................................................................................................................................... 32
SERVICE............................................................................................................................................... 32
AIR GAP SETTING ............................................................................................................................... 32
SPARK PLUG SERVICE....................................................................................................................... 32
CHAPTER 7 INTERNAL ENGINE AND CYLINDER ...........................................................33
GENERAL INFORMATION ................................................................................................................... 33
OPERATION ......................................................................................................................................... 33
MANUAL COMPRESSION RELEASE.................................................................................................. 33
COMPONENTS..................................................................................................................................... 34
TROUBLESHOOTING .....................................................................................................................35-36
TESTING............................................................................................................................................... 37
ENGINE KNOCKS ................................................................................................................................ 37
ENGINE OVERHEATS ......................................................................................................................... 37
SURGES OR RUNS UNEVENLY ......................................................................................................... 37
ENGINE MISFIRES............................................................................................................................... 37
ENGINE VIBRATES EXCESSIVELY .................................................................................................... 38
LACKS POWER OR WILL NOT START............................................................................................... 38
SERVICE............................................................................................................................................... 38
GENERAL INFORMATION ................................................................................................................... 38
DISASSEMBLY PROCEDURE—TC TYPE 1 AND TC TYPE II ......................................................38-40
BEARING AND SEAL SERVICE—TC TYPE I AND TC TYPE II .......................................................... 40
ASSEMBLY—TC TYPE I AND TC TYPE II .....................................................................................41-43
DISASSEMBLY—TM .......................................................................................................................43-44
BEARING AND SEAL SERVICE—TM.................................................................................................. 44
ASSEMBLY—TM .............................................................................................................................45-47
CHAPTER 8 ENGINE SPECIFICATION AND SEARS CRAFTSMAN
CROSS-REFERENCE ...............................................................................................48
TORQUE SPECIFICATIONS ................................................................................................................ 48
ENGINE SPECIFICATIONS.................................................................................................................. 49
SEARS CRAFTSMAN CROSS REFERENCE...................................................................................... 50
CHAPTER 9 EDUCATIONAL MATERIALS AND TOOLS.............................................51-54
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