Do you want to service & repair your Tecumseh 2-cycle engines yourself? We can help you with the official certified Service & Repair manual; just push the button INSTANT DOWNLOAD on the left side, download the file and you can start right away. This manual covers the following model(s): AH520 AH600 AV520 AV600 HSK600 TVS600 This manual covered many engines under an Old form of Identification which will need to be reviewed as well. TYPE / SPECIFICATION NUMBER 638-670 1398-1642 and Craftsman 200 Series Models. We only sell original manuals; the quality of the files is exceptionally good. When you print the file, the pictures are of good quality and very bright. WE DO NOT SELL ANY COPIED MANUALS, ONLY THE ORIGINAL!!!! In this manual you have the following chapters: GENERAL INFORMATION ENGINE IDENTIFICATION INTERPRETATION OF MODEL NUMBER ENGINE CARE SHORT BLOCKS STORAGE: TUNE-UP PROCEDURE EXHAUST PORT CLEANING 2-CYCLE THEORY OF OPERATION OPERATION OF PISTON PORT STYLE OPERATION OF REED PORTED STYLE WITH LOOP SCAVENGING TERMS EXHAUST OR SCAVENGE PHASE PORTS EXHAUST PORTS THIRD PORT REED VALVE LUBRICATION AIR CLEANERS, CARBURETORS, GOVERNORS AND LINKAGE AIR CLEANERS POLYURETHANE-TYPE AIR CLEANER KLEEN-AIRE® SYSTEM PAPER-TYPE AIR CLEANER SERVICE GENERAL CARBURETOR INFORMATION CARBURETOR IDENTIFICATION FLOAT-TYPE CARBURETORS DIAPHRAGM (PRESSURE DIFFERENTIAL) CARBURETORS OPERATION CARBURETOR SERVICE THROTTLE CHOKE ADJUSTING SCREWS FUEL BOWL RETAINING NUT CARBURETOR VENTING HIGH TILT FLOAT STYLE FUEL BOWL FLOAT INLET NEEDLE AND SEAT (FLOAT CARBURETORS) NEEDLE AND SEAT OPO-OFF TEST FLOAT HEIGHT SETTINGS PRIMER BULB CLEANING CARBURETOR BODY DIAPHRAGMS INLET NEEDLE AND SEAT FUEL INLET FITTING PRIMER BULB (DIAPHRAGM CARBURETOR) CARBURETOR CHECK VALVE CARBURETOR SERVICE PROCEDURE EMISSIONIZED DIAPHRAGM CARBURETION13 OUTBOARD CARBURETORS OUTBOARD CONTROL PANEL CARBURETOR ADJUSTMENTS IDLE SPEED ADJUSTMENT FLOAT TYPE-FIXED MAIN, IDLE ADJUST DIAPHRAGM - SINGLE AND DUAL ADJUSTMENT TROUBLESHOOTING CARBURETION FLOAT CARBURETOR CHECKS CHECKS FOR DIAPHRAGM STANDARD SERVICE CARBURETORS FUEL FITTING INLET FUEL FITTING CHOKE SHAFT THROTTLE LEVER IDLE SPEED ADJUSTMENT SCREW GOVERNORS AND LINKAGE AIR VANE GOVERNORS OPERATION LINKAGE INSTALLATION REWIND STARTERS, ELECTRIC STARTERS AND ALTERNATORS REWIND STARTERS COMPONENTS ROPE SERVICE STYLIZED REWIND STARTER VERTICAL PULL STARTER HORIZONTAL ENGAGEMENT TYPE STYLIZED REWIND STARTER WITH PLASTIC RETAINER VERTICAL PULL STARTER, VERTICAL ENGAGEMENT TYPE REWIND STARTER MOUNTED IN HOUSING ELECTRIC STARTERS DRIVE ASSEMBLY SERVICE STARTER CHECKING AND SERVICE CHECK FIELD ARMATURE CHECK TROUBLESHOOTING STARTERS ALTERNATORS CHECKING THE SYSTEM FLYWHEEL (INSIDE-EDGE) BRAKE SYSTEM INSIDE EDGE SYSTEM COMPONENTS SERVICE CONTROL CABLE IGNITION IGNITION OPERATION (Pre- 1985 Production) MAGNETO IGNITION CONTACT POINTS CONDENSER OPERATION OF THE TECUMSEH MAGNETO IGNITION SOLID STATE IGNITION (1985 to Present) SOLID STATE IGNITION OPERATION IGNITION SERVICE SPARK PLUG SERVICE FLYWHEEL REMOVAL AND SERVICE FLYWHEEL MAGNETS FLYWHEEL KEYS ADAPTER KEY TO FLYWHEEL ASSEMBLY FLYWHEEL SLEEVE FLYWHEEL TORQUE REPLACING MAGNETO BREAKER POINTS CONDENSER CHECK IGNITION COIL IGNITION TIMING FIXED TIME SPEED (EXTERNAL COIL) SOLID STATE (CDI) OTHER IGNITION SYSTEMS OUTBOARD TIMING OUTBOARD TIMING (STANDARD IGNITION) OUTBOARD TIMING (SOLID STATE) CYLINDERS & INTERNAL COMPONENTS PISTON & RING SERVICE CONNECTING ROD SERVICE NEEDLE BEARINGS CRANKSHAFT, BEARING AND OIL SEAL SERVICE NEEDLE BEARINGS OIL SEALS ONE PIECE SEALS THREE PIECE SEALS OUTBOARD SEAL SERVICE CYLINDERS, REEDS & COMPRESSION RELEASE CYLINDER & HEAD SERVICE GASKETS REED VALVES AUTOMATIC COMPRESSION RELEASE (DOUBLE REED TYPE) AUTOMATIC COMPRESSION RELEASE (SINGLE REED TYPE) CYLINDER EXHAUST PORTS TROUBLESHOOTING ENGINE FAILS TO START OR STARTS WITH DIFFICULTY ENGINE KNOCKS ENGINE MISSES UNDER LOAD ENGINE LACKS POWER ENGINE OVERHEATS ENGINE SURGES OR RUNS UNEVENLY ENGINE VIBRATES EXCESSIVELY SPECIFICATIONS ENGINE TYPE NUMBER AND LETTER REFERENCE SEARS CRAFTSMAN CROSS REFERENCE TABLE OF SPECIFICATIONS TABLE OF TORQUE LIMITS EDUCATIONAL MATERIALS AND TOOLS AVAILABLE TECHNICIANS HANDBOOKS AVAILABLE FOREIGN TECHNICIANS HANDBOOKS TOOL KIT 670195D TOOLS Language: english Format: PDF Pages: 68 If you have a request, dont hesitate to ask us