This Yamaha motorcycle manual is 416 pages.
QUICK REFERENCE DATA
CHAPTER ONE / GENERAL INFORMATION
Manual organization / Notes, cautions and warnings / Message to parents / Safety first / Cleaning parts / Handling gasoline safely / Service hints / Serial numbers / Warning labels / Torque specifications / Fasteners / Lubricants/ Sealants, cements and cleaners / Threadlocking compound / Expendable supplies / Basic hand tools / Precision measuring instruments / Test equipment / Special tools / Mechanic's tips / Ball bearing replacement / Seals / Specifications
CHAPTER TWO / TROUBLESHOOTING
Operating requirements / Engine operating principles / Starting the engine / Starting difficulties / Engine starting troubles / Engine performance / Engine / Engine noises / Two-stroke leak down test / Fuel system / Electrical troubleshooting / Ignition system / Clutch and gearshift linkage / Transmission / Kickstarter / Drive train noise (PW50) / Drive train noise (BW80 and PW80) / Oil injection system / Handling/ Brakes / Specifications
CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP
Service intervals / Tune-up / Engine oil / Transmission oil / Air filter / Spark plug / Carburetor / Exhaust system / Oil pump and engine oil lines / Engine compression check / Ignition timing / Control cable lubrication / Throttle and oil pump cable adjustment / Speed limiter adjustment / Brake lubrication, inspection and cable adjustment / Final gear lubrication PW50 / Drive chain BW80 and PW80 / Front fork oil change BW80 and PW80 / Specifications
CHAPTER FOUR / ENGINE PW50
Engine identification / Engine lubrication / Exhaust system / Cylinder head / Cylinder / Piston, pin and ring / Reed valve assembly / Clutch / Primary drive gear / Kickstarter, oil pump drive gear and kick pinion gear / Transmission / Crankcase and crankshaft / break-in / Specifications
CHAPTER FIVE / ENGINE BW80 AND PW80
Engine identification / Engine lubrication / Exhaust system / Engine / Cylinder head / Cylinder / Piston, piston pin and piston ring / Reed valve assembly / Primary drive gear and oil pump drive gear / Kickstarter / External shift mechanism / Crankcase and crankshaft / Transmission / Break-in / Specifications
CHAPTER SIX / CLUTCH BW80 AND PW80
Right crankcase cover / Clutch service / Specifications
CHAPTER SEVEN / FUEL SYSTEM
Carburetor / Carburetor cleaning and inspection / Carburetor rejetting / Fuel tank and fuel valve / Throttle cables / Choke cable / Specifications
CHAPTER EIGHT / ELECTRICAL SYSTEM
Component testing / Capacitor discharge ignition / Flywheel / CDI unit / Ignition coil / Specifications
CHAPTER NINE / OIL INJECTION SYSTEM
Oil pump cable adjustment / Oil pump bleeding / Oil pump plunger stroke adjustment / Oil pump / Oil hoses / Oil tank / Oil pump output test PW50 / Oil pump output test BW80 and PW80 / Specifications
CHAPTER TEN / FRONT SUSPENSION AND STEERING PW50
Front wheel / Front hub / Tire changing / Handlebar / Steering head / Front forks / Specifications
CHAPTER ELEVEN / FRONT SUSPENSION AND STEERING BW80 AND PW80
Front wheel / Front hub / Handlebar / Steering head / Front forks / Tire change BW80 / Specifications
CHAPTER TWELVE / REAR SUSPENSION AND FINAL DRIVE PW50
Rear wheel / Rear arm / Final drive / Rear shock absorbers / Specifications
CHAPTER THIRTEEN / REAR SUSPENSION BW80 AND PW80
Rear wheel / Rear hub / Final driven flange / Chain and sprockets / Tire changing / Rear shock absorber / Rear swing arm / Specifications
CHAPTER FOURTEEN / BRAKES
Drum brakes / Brake levers and cables PW50 / Front brake cable / Rear brake pedal and rod / Specifications
CHAPTER FIFTEEN / BODY
Seat, side covers and rear fender / Front fender / Rear fender / Specifications
INDEX
WIRING DIAGRAMS
Models covered:
1986 1987 1988, 1990 Yamaha BW80 BW 80 Big Wheel
1981 1982 1983, 1985 1986 1987, 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 Yamaha PW50 PW 50 Y-Zinger
1983, 1985, 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 Yamaha PW80 PW 80 Y-Zinger
Clymer Manuals Yamaha PW50 Y-Zinger Manual
Clymer Manuals Yamaha PW80 Y-Zinger Manual
Clymer Manuals Yamaha BW80 Big Wheel Manual
PW50 Y-Zinger (1981-1983, 1985-1987, 1990-2002)
PW80 Y-Zinger (1983, 1985, 1991-2002)
BW80 Big Wheel (1986-1988, 1990)