QUICK REFERNCE DATA
CHAPTER ONE / GENERAL INFORMATION
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
Routine checks / Pre-checks / Service intervals / Tires and wheels / Crankcase breather hoses (XL series models) / Battery (XL series models) / Periodic lubrication / Periodic maintenance / Engine tune-up
CHAPTER FOUR / ENGINE
Engine principles / Engine cooling / Servicing engine in frame / Engine removal/installation / Cylinder head and camshaft / Camshaft and rocker assemblies / Cam chain / Valves and valve components / Cylinder / Piston, piston pin and piston rings / Oil filter rotor and primary drive gear (1975-1976 XR75) / Primary drive gear / Oil pump / Crankcase and crankshaft / Cam chain and tensioner / Kickstarter / Break-in procedure
CHAPTER FIVE / CLUTCH AND TRANSMISSION
Clutch operation / Clutch / Clutch release mechanism / Clutch cable / External shift mechanism / Drive sprocket / Transmission and internal shift mechanism / Preliminary transmission inspection (all models) / 4-speed transmission and internal shift mechanism (XR75) / 4-speed transmission and internal shift mechanism (XL75 and XL80S) / 5-speed transmission and internal shift mechanism / Internal shift mechanism inspection
CHAPTER SIX / FUEL AND EXHAUST SYSTEMS
Carburetor operation / Carburetor service / Carburetor adjustments / Throttle cable / Fuel tank / Crankcase breather system (U.S. XL series models) / Evaporative emission control system (California XL series models only) / Exhaust system
CHAPTER SEVEN / ELECTRICAL SYSTEM
Charging system / Rectifier / Voltage regulator/rectifier (1982-on XL100S) / Alternator / Contact breaker point ignition / Ignition coil / Lighting system (XL series models) / Switches / Horn (XL series models) / Fuse (XL series models)
CHAPTER EIGHT / FRONT SUSPENSION AND STEERING
Front wheel / Front hub / Wheels / Tire changing / Tire repairs / Handlebar / Steering head / Front fork
CHAPTER NINE / REAR SUSPENSION
Rear wheel (dual-shock models) / Rear wheel (Pro-Link models) / Rear hub and driven sprocket inspection (all models) / Rear hub and driven sprocket (XR80R and XR100R) / Rear hub and driven sprocket (all other models) / Drive chain / Shock absorbers (dual-shock models) / Swing arm / Swing arm (Pro-Link models) / Pro-Link system / Shock absorber (Pro-Link models) / Pivot arm assembly
CHAPTER TEN / BRAKES
Drum brakes / Front brake cable / Rear brake pedal assembly
CHAPTER ELEVEN / FRAME
Sidestand / Footpegs / Frame
SUPPLEMENT / 1993 AND LATER SERVICE INFORMATION
Engine starting / Engine performance / Engine tune-up / Carburetor / Electrical component replacement / Alternator / Rotor / Ignition coil / Pulse generator / CDI unit
INDEX
COLOR WIRING DIAGRAMS
1979-1985 HONDA XL100S
1977-1979 HONDA XL75
1980-1985 HONDA XL80S
1981-1984 HONDA XR100
1985-1991 HONDA XR100R
1975-1978 HONDA XR75
1979-1984 HONDA XR80
1985-1988, 1990-1991 HONDA XR80R
