Honda Motorcycle ATC90 (1970 - 1978)

This Honda vintage ATV manual is 360 pages.

QUICK REFERENCE DATA

CHAPTER ONE / GENERAL INFORMATION
Manual organization / Service hints / Torque specifications / Safety first / Special tips / Parts replacement / Expendable supplies / Serial numbers / Tune-up and troubleshooting tools / "Off the road" rules / Safety

CHAPTER TWO / TROUBLESHOOTING
Operating requirements / Emergency troubleshooting / Engine starting / Engine performance / Engine noises / Excessive vibration / Front suspension and steering / Brake problems

CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP
Daily checks / Service intervals / Tires and wheels / Battery (models so equipped) / Periodic lubrication / Periodic maintenance / Engine tune-up / Valve clearance adjustment / Camshaft chain tensioner adjustment / Compression test / Spark plug / Contact breaker point ignition (ATC70, ATC90, 1979-1980 ATC110) / Solid state ignition (1981-on ATC110; ATC125M) / Carburetor / Storage

CHAPTER FOUR / ENGINE
Engine principles / Engine cooling / Engine lubrication / Servicing engine in frame / Engine / Cylinder head and camshaft / Valves and valve components / Camshaft chain and tensioner / Cylinder / Piston, piston pin and piston rings / Oil pump / Left-hand crankcase cover (ATC90 and ATC110) / Crankcase and crankshaft / Electric starter gears and left-hand crankcase cover spacer (ATC125M) / Recoil starter (70-110 cc) / Recoil starter (125 cc) / Break-in procedure

CHAPTER FIVE / CLUTCH AND TRANSMISSION
Centrifugal clutch / Clutch inspection (all models) / Clutch release mechanism / External shift mechanism / Drive sprocket / Transmission and internal shift mechanism / Preliminary transmission inspection (all models) / 3-speed transmission and internal shift mechanism (70 cc) / 4-speed transmission and internal shift mechanism (70 cc) / 4-speed transmission and internal shift mechanism (90-125 cc) / Internal shift mechanism (all models) / Subtransmission

CHAPTER SIX / FUEL AND EXHAUST SYSTEMS
Carburetor operation / Carburetor service / Carburetor adjustments / Throttle cable / Choke cable (ATC125M) / Fuel tank / Exhaust system

CHAPTER SEVEN / ELECTRICAL SYSTEM
Charging system (models so equipped) / Alternator / Alternator (outer rotor type) / Alternator (inner rotor type) / Rotor testing / Stator coil testing / Voltage regulator/rectifier (models so equipped) / Contact breaker point ignition / Capacitor discharge ignition / Ignition coil / Starting system (models so equipped) / Starter / Starter solenoid / Lighting system (models so equipped) / Switches / Fuse

CHAPTER EIGHT / STEERING, SUSPENSION AND FRAME
Front wheel / Front hub / Handlebar / Front fork and steering head / Rear wheel / Rear axle and driven sprocket (ATC70) / Rear axle and driven sprocket (1970-1974 ATC90) / Rear axle and driven sprocket (1975-1978 ATC90 and 1979-1983 ATC110) / Rear axle and driven sprocket (1984 ATC110 and ATC125M) / Rear hub inspection (all models) / Rear axle inspection (all models) / Drive chain / Rear axle bearing holder / Tires and wheels / Frame

CHAPTER NINE / BRAKES
Front brake / Rear brake / Brake cable / Rear brake pedal

SUPPLEMENT / 1985 SERVICE INFORMATION

INDEX

WIRING DIAGRMS

Models covered:
1979 1980 1981 1982 1983 1984 1985 HONDA ATC110
1984 1985 HONDA ATC125M
1973 1974, 1978 1979 1980 1981 1982 1983 1984 1985 HONDA ATC70
1970 1971 1972 1973 1974 1975 1976 1977 1978 HONDA ATC90
1986 HONDA Fourtrax 125
1986 1987 HONDA Fourtrax 70
1985 HONDA TRX125

Clymer Manuals Honda ATC110 Manual
Clymer Manuals Honda ATC125M Manual
Clymer Manuals Honda ATC70 Manual
Clymer Manuals Honda ATC90 Manual
Clymer Manuals Honda Fourtrax 125 Manual
Clymer Manuals Honda Fourtrax 70 Manual
Clymer Manuals Honda TRX125 Manual

ATC70 (1973-1974, 1978-1985)
ATC90 (1970-1978)
ATC110 (1979-1985)
ATC125M (1984-1985)
Fourtrax 70 (1986-1987)
TRX125 (1985)
Fourtrax 125 (1986)