3to 11hp 4-cycle l-head engines - Small Engine Suppliers

More documents

Recommendations

Info

CONTENTS CHAPTER 1 GENERAL INFORMATION ........................................................................................................ 1 ENGINE IDENTIFICATION .............................................................................................................................. 1 INTERPRETATION OF MODEL NUMBER ...................................................................................................... 1 SHORT BLOCKS ............................................................................................................................................. 2 FUEL ................................................................................................................................................................ 2 ENGINE OIL .................................................................................................................................................... 3 TUNE-UP PROCEDURE ................................................................................................................................. 3 STORAGE........................................................................................................................................................ 4 CHAPTER 2 AIR CLEANERS ....................................................................................................................... 5 GENERAL INFORMATION .............................................................................................................................. 5 OPERATION .................................................................................................................................................... 5 COMPONENTS ............................................................................................................................................... 5 TROUBLESHOOTING OR TESTING .............................................................................................................. 5 SERVICE ......................................................................................................................................................... 6 DISASSEMBLY PROCEDURE ........................................................................................................................ 6 POLYURETHANE-TYPE FILTER ELEMENT .................................................................................................. 6 PAPER-TYPE FILTER ELEMENT ................................................................................................................... 6 CHAPTER 3 CARBURETORS AND FUEL SYSTEMS .................................................................................. 7 GENERAL INFORMATION .............................................................................................................................. 7 OPERATION .................................................................................................................................................... 8 FUEL PRIMERS............................................................................................................................................... 8 IMPULSE FUEL PUMPS ................................................................................................................................. 9 FLOAT STYLE CARBURETORS ..................................................................................................................... 9 DIAPHRAGM (PRESSURE DIFFERENTIAL) CARBURETORS..................................................................... 9 COMPONENTS ............................................................................................................................................. 10 CARBURETOR IDENTIFICATION ................................................................................................................ 11 DUAL SYSTEM CARBURETORS ................................................................................................................. 11 SERIES 1 CARBURETORS .......................................................................................................................... 11 SERIES 3 & 4 CARBURETORS .................................................................................................................... 11 DIAPHRAGM CARBURETORS..................................................................................................................... 11 SERIES 6 CARBURETORS 4-CYCLE .......................................................................................................... 12 SERIES 8 ....................................................................................................................................................... 12 SERIES 9 ....................................................................................................................................................... 12 SERIES 10 (EMISSION) ................................................................................................................................ 12 NON-TECUMSEH CARBURETORS -- DELLORTO CARBURETOR .......................................................... 12 ENGINE TROUBLESHOOTING CHART....................................................................................................... 13 CARBURETION TROUBLESHOOTING CHART .......................................................................................... 14 TESTING ....................................................................................................................................................... 15 SERVICE ....................................................................................................................................................... 15 CARBURETOR PRE-SETS AND ADJUSTMENTS ...................................................................................... 15 FINAL ADJUSTMENTS (NON-EMISSION ENGINES) .................................................................................. 16 NON-ADJUSTABLE CARBURETOR............................................................................................................. 16 DISASSEMBLY PROCEDURE ...................................................................................................................... 17 FLOAT STYLE CARBURETORS ................................................................................................................... 17 DIAPHRAGM CARBURETORS..................................................................................................................... 19 FLOAT ADJUSTING PROCEDURE .............................................................................................................. 19 INSPECTION ................................................................................................................................................. 20 ASSEMBLY .................................................................................................................................................... 21 STANDARD SERVICE CARBURETORS ...................................................................................................... 24 CHAPTER 4 GOVERNORS AND LINKAGE ................................................................................................ 26 GENERAL INFORMATION ............................................................................................................................ 26 OPERATION .................................................................................................................................................. 26 INTERNAL COMPONENTS (VARIOUS STYLES) ........................................................................................ 26 TROUBLESHOOTING ................................................................................................................................... 26 ENGINE OVERSPEEDING ........................................................................................................................... 27 ENGINE SURGING ....................................................................................................................................... 27 SERVICE ....................................................................................................................................................... 27 GOVERNOR ADJUSTMENT ......................................................................................................................... 27 GOVERNOR ADJUSTMENT PROCEDURE FOR SHORT BLOCK INSTALLATIONS ................................. 27 C Tecumseh Products Company 1998 i
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 IDENTIFICATION OF TECUMSEH IGNITION SYSTEMS ............................................................................ 64 COMPONENTS ............................................................................................................................................. 64 IGNITION TROUBLESHOOTING .................................................................................................................. 66 ii
Page 1: TECUMSEH T E C H N I C I A N ' S H
Page 5 and 6: CHAPTER 1 GENERAL INFORMATION ENGIN
Page 7 and 8: ENGINE OIL Use a clean, high qualit
Page 9 and 10: GENERAL INFORMATION CHAPTER 2 AIR C
Page 11 and 12: CHAPTER 3 CARBURETORS AND FUEL SYST
Page 13 and 14: IMPULSE FUEL PUMPS Impulse fuel pum
Page 15 and 16: CARBURETOR IDENTIFICATION Tecumseh
Page 17 and 18: ENGINE TROUBLESHOOTING Engine Will
Page 19 and 20: TESTING 1. After repeated efforts t
Page 21 and 22: DISASSEMBLY PROCEDURE NOTE: Engines
Page 23 and 24: Diaphragm Carburetors 1. Remove the
Page 25 and 26: ASSEMBLY Welch Plugs To install a n
Page 27 and 28: 4. Install the hinge pin from the o
Page 29 and 30: Throttle Lever Remove the throttle
Page 31 and 32: ENGINE OVERSPEEDING 1. If the engin
Page 33 and 34: SPEED CONTROLS AND LINKAGE Many dif
Page 35 and 36: HORIZONTAL SHAFT ENGINES IDLE SPEED
Page 37 and 38: VERTICAL SHAFT ENGINES HIGH SPEED A
Page 39 and 40: GENERAL INFORMATION CHAPTER 5 REWIN
Page 41 and 42: CAUTION: THIS REWIND SPRING IS NOT
Page 43 and 44: 2. Place the pulley assembly into t
Page 45 and 46: at the outer edge against the gear
Page 47 and 48: CONVERTING ALTERNATING CURRENT TO D
Page 49 and 50: BASIC CHECKS Before going into exte
Page 51 and 52: TROUBLESHOOTING ELECTRICAL CHARGING
Page 53 and 54:
18 Watt A.C. Lighting Alternator Mo
Page 55 and 56:
NOTE: ON OLDER POINT IGNITION SYSTE
Page 57 and 58:
5 Amp Alternator System Regulator-R
Page 59 and 60:
7 Amp Alternator System Regulator-
Page 61 and 62:
SERVICE This section covers the ser
Page 63 and 64:
CHAPTER 7 FLYWHEEL BRAKE SYSTEMS GE
Page 65 and 66:
SERVICE If the brake system fails t
Page 67 and 68:
CHAPTER 8 IGNITION GENERAL INFORMAT
Page 69 and 70:
The condenser acts as an electrical
Page 71 and 72:
TESTING PROCEDURE 1. Check for spar
Page 73 and 74:
Begin the procedure by replacing th
Page 75 and 76:
Other Solid State Systems The follo
Page 77 and 78:
LUBRICATION SYSTEMS The lubrication
Page 79 and 80:
ENGINE OPERATION PROBLEMS ENGINE KN
Page 81 and 82:
TESTING ENGINE KNOCKS 1. Check the
Page 83 and 84:
5. Check the engine valve lash. Res
Page 85 and 86:
CYLINDERS Visually check the cylind
Page 87 and 88:
Use a ring expander to remove and r
Page 89 and 90:
VALVES The valves should be checked
Page 91 and 92:
Late production top mounted breathe
Page 93 and 94:
COUNTERBALANCE SERVICE To correctly
Page 95 and 96:
FOUR CYCLE TORQUE SPECIFICATIONS Th
Page 97 and 98:
ENGINE SPECIFICATIONS STANDARD POIN
Page 99 and 100:
ENGINE SPECIFICATIONS STANDARD POIN
Page 101 and 102:
SOLID STATE AND EXTERNAL IGNITION A
Page 103 and 104:
SOLID STATE AND EXTERNAL IGNITION A
Page 105 and 106:
SOLID STATE AND EXTERNAL IGNITION (
Page 107 and 108:
OIL SEAL DRIVER FLYWHEEL KNOCK-OFF
Page 109 and 110:
DECIMAL/FRACTION CONVERSIONS .016 =
Page 111 and 112:
SEARS CRAFTSMAN CROSS REFERENCE CHA
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
show all

3to 11hp 4-cycle l-head engines - Small Engine Suppliers

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?