1987-1992 Yamaha WJ500 WR500 WR650 WRA650 WRB650 SJ650 PWC Service Repair Manual PDF Download

Models Covered: Yamaha WJ500 (1987-1992) Yamaha WR500 (1987-1992) Yamaha WR650 (1987-1992) Yamaha WRA650 (1987-1992) Yamaha WRB650 (1987-1992) Yamaha SJ650 (1987-1992) This manual can be used by anyone from a first time owner/amateur to a professional technician.Easy to read type,And give you all the information needed to do the procedure correctly.Keep this shop manual handy and use it often. Performing routine,preventive maintenance will save you time & money by helping to prevent premature failure and unnecessary repairs. Manual Contents: CHAPTER ONE/GENERAL INFORMATION Manual organization / Notes, cautions and warnings / Safety first / Service hints / Engine operation / Parts replacement / Clearing a submerged vehicle / Torque specifications / Fasteners / Lubricants / RTV gasket sealant / Threadlock / Basic hand tools / Precision measuring tools / Special tools / Mechanics tips / Ball bearing replacement / Oil seals / Specifications CHAPTER TWO / TROUBLESHOOTING Operating requirements / Emergency troubleshooting / Engine starting / Starting system / Charging system / Ignition system / Fuel system / Engine / Two-stroke pressure testing / Steering / Jet pump CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP Break-in procedure / 10-hour inspection / Lubrication / Lubrication system identification / Recommended fuel mixture / Fuel mixing / Oil injection service / Oil pump bleeding / Oil filter / Oil tank drain hose / Check valve / Oil tank / 50 and 100 hour maintenance schedule / Fuel filter / Water separator / Fuel filler cap / Fuel tank pickup / Cooling system flushing / Engine tune-up / Torque cylinder head bolts / Cylinder compression test / Spark plug / Ignition timing / Carburetor adjustment / Storage / Specifications CHAPTER FOUR / ENGINE (500 CC) Engine lubrication / Service precautions / Serial numbers / Servicing engine in hull / Special tools / Engine removal installation / Muffler housing and exhaust guide / Specifications CHAPTER FIVE / ENGINE (650 CC) Engine lubrication / Service precautions / Serial numbers / Servicing engine in hull / Special tools / Engine removal installation / Muffler housing / Engine top end / Cylinder / Piston, piston pin and piston rings / Crankcase and crankshaft / Specifications CHAPTER SIX / DRIVE TRAIN Intermediate shaft and housing / Jet pump / Ride plate adjustment / Specifications CHAPTER SEVEN / FUEL AND WATER BOX SYSTEMS Flame arrestor / Intake manifold and reed valve / Type I Type II Carburetor / Type III Carburetor /Fuel tank / Fuel valve / Water box / Specifications CHAPTER EIGHT / ELECTRICAL SYSTEM Battery / Charging system / Electric starting system / Flywheel and stator plate / Flywheel, idler gear and stator plate / Electric box / Switches / Fuel sender / Fuse / Wiring diagrams / Specifications CHAPTER NINE / OIL INJECTION SYSTEM - WRA650 AND WRB650 Oil tank / Sub oil tank / Check valves / Oil tank breather valve / Oil pump / Specifications CHAPTER TEN / BILGE SYSTEM CHAPTER ELEVEN / STEERING SYSTEM Steering assembly / Specifications INDEX WIRING DIAGRAMS