Nummer M393, Engelse taal.
Uitvoerige beschrijvingen voor onderhoud of reparaties. Omvat de volgende modellen:
YZ50 (1980), YZ60 (1981-1982), YZ80 (1978-1990)
QUICK REFERENCE DATA
CHAPTER ONE / GENERAL INFORMATION
CHAPTER TWO / TROUBLESHOOTING
Two-stroke pressure testing
CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP
Pre-checks / Tires and wheels / Lubricants / Cleaning solvent / Engine lubrication / Periodic lubrication / Periodic maintenance / Engine tune-up / Storage
CHAPTER FOUR / ENGINE TOP END
Engine principles / Engine lubrication / Engine cooling / Cleanliness / Servicing engine in frame / Cylinder head / Cylinder / Piston, wrist pin and piston rings / Break-in procedure / Reed valve assembly
CHAPTER FIVE / ENGINE LOWER END
Servicing engine in frame / Engine removal installation / Crankcase and crankshaft
CHAPTER SIX / CLUTCH, EXTERNAL SHIFT MECHANISM AND KICKSTARTER
Clutch cover / Clutch / Primary drive pinion gear / Clutch cable / Clutch release mechanism / External shift mechanism / Kickstarter (1978-1980) / Kickstarter (1981-on)
CHAPTER SEVEN / TRANSMISSION AND INTERNAL SHIFT MECHANISM
Transmission operation / Transmission overhaul (5-speed) / Transmission overhaul (1979-1980 6-speed) / Transmission overhaul (1981-on 6-speed) / Internal shift mechanism (1978-1980) / Internal shift mechanism (1981-on)
CHAPTER EIGHT / FUEL AND EXHAUST SYSTEMS
Carburetor operation / Carburetor service (1978-1982) / Carburetor adjustments / Fuel shutoff valve / Fuel tank / Fuel filter / Yamaha energy induction system (YEIS) / Exhaust system / Exhaust system repair
CHAPTER NINE / IGNITION SYSTEM
Contact breaker point ignition (YZ50) / Capacitor discharge ignition / Magneto (outer rotor type) / Magneto (inner rotor type) / Stator coil testing (all models) / Capacitor discharge ignition unit / Ignition coil / Spark plug / Engine kill switch
CHAPTER TEN / LIQUID COOLING SYSTEM
Cooling system inspection / Radiator / Water pump
CHAPTER ELEVEN / FRONT SUSPENSION AND STEERING
Front wheel / Front hub / Wheels / Tire changing / Tire repairs / Handlebar / Steering head and stem (1978-1981 and 1983) / Steering head and stem (1982 YZ80) / Steering head and stem (1984-on) / Front fork (YZ50, YZ60 and 1978-1982 YZ80) / Front fork (1983-on)
CHAPTER TWELVE / REAR SUSPENSION
Rear wheel / Rear hub / Driven sprocket / Drive chain / Rear suspension (deCarbon monoshock system) / Swing arm (1978-1982) / Swing arm and relay arm (1983-on) / Rear suspension bushing and bearing replacement (all models)
CHAPTER THIRTEEN / BRAKES
Drum brakes / Front brake cable replacement / Front disc brake (1986-on) / Front brake pad replacement / Front caliper / Front master cylinder / Front brake hose replacement / Front brake disc / Bleeding the system
CHAPTER FOURTEEN / SUSPENSION ADJUSTMENT
Yamaha factory accessories / Suspension travel measurement / Front forks / Rear shock absorber (1978-1981) / Rear shock absorber (1982-on)
INDEX
WIRING DIAGRAMS