CHAPTER ONE / GENERAL INFORMATION
CHAPTER TWO / TROUBLESHOOTING
CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP
Pre-checks / Engine lubrication / Service intervals / Tires and wheels / Periodic lubrication / Periodic maintenance / Engine tune-up
CHAPTER FOUR / ENGINE
Cylinder head / Cylinder / Reed valve assembly / Exhaust valve (1986 models) / Exhaust valve (1987-on models) / Piston, piston pin and piston rings / Engine / Crankcase and crankshaft / Kickstarter (1984-on RM125, 1986-on RM250) / Kickstarter (1981-1983 RM125, 1981-1985 RM250, RM465, RM500) / Break-in procedure
CHAPTER FIVE / CLUTCH AND TRANSMISSION
Clutch cable replacement / Clutch / Gearshift mechanism / Primary drive gear / Transmission
CHAPTER SIX / FUEL AND EXHAUST SYSTEM
Fuel tank and fuel valve / Carburetor (1981-1987) / Carburetor (1988) / Carburetor adjustments / Air filter air box / Exhaust system
CHAPTER SEVEN / IGNITION
Capacitor discharge ignition system / Magneto (inner rotor) / Magneto (outer rotor) / CDI unit / Ignition timing / Ignition coil
CHAPTER EIGHT / LIQUID COOLING SYSTEM
Flushing / Cooling system inspection / Coolant pump (1981-1987 RM125, 1982-1986 RM250) / Coolant pump (1988 RM125, 1987-on RM250) / Radiator / Hoses
CHAPTER NINE / FRONT SUSPENSION AND STEERING
Front wheel / Spokes and wheel runout / Tire changing / Tire repairs / Front fork (1981-1986) / Front fork (1987-on) / Steering stem and head (1981-1987) / Steering stem and head (1988) / Steering head bearing race replacement (all models)
CHAPTER TEN / REAR SUSPENSION
Rear wheel (drum brake models) / Rear wheel (disc brake models) / Rear hub / Driven sprocket / Shock absorber / Shock absorber oil change / Shock absorber pressurizing / Shock lever and pushrods (1981-1985 models) / Shock lever (1986 models) / Shock linkage (1987-on) / Swing arm
CHAPTER ELEVEN / BRAKES
Drum brakes / Disc brakes / Front brake pad replacement / Front master cylinder / Front caliper / Front brake hose replacement / Front brake disc / Rear brake pad replacement / Rear master cylinder / Rear caliper / Rear brake hose replacement / Rear brake disc / Bleeding the system
INDEX
WIRING DIAGRAMS