This Yamaha snowmobile manual is 472 pages. 

QUICK REFERENCE DATA 

CHAPTER ONE / GENERAL INFORMATION
Manual organization / Notes, cautions and warnings / Safety first / Service hints / Engine and chassis serial numbers / Engine operation / Torque specifications / Fasteners / Lubricants / RTV gasket sealant / Threadlock / Basic hand tools / Precision measuring tools / Special tools / Mechanic¿s tips / Ball bearing replacement / Oil Seals / Snowmobile operation / Snowmobile safety / Snowmobile code of ethics / Specifications 

CHAPTER TWO / TROUBLESHOOTING
Operating requirements / Troubleshooting instruments / Ignition system (1984 PZ480H) / Ignition system (1984 PZ480SEH) / Ignition system (1985-on PZ480 and EX570) / Battery charging system (PZ480 and EX570 models with electric start) / Lighting system / Electric starting system / Fuel system / Engine / Two-stroke pressure testing / Power train / Skis and steering / Track assembly 

CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP
Pre-ride checks inspection / Two-stroke fuel mix mixture / Oil tank / Chain housing / Oil level check and change / Maintenance / Engine mounts and fasteners / Fan belt tension check adjustment / Coolant check draining change / Recoil starter / Ski runners / Starter cable adjustment / Decompression cable adjustment / Throttle cable / Oil pump cable / Guide wheel / Track adjustment alignment / Oil filter inspection replacement / Fuel filter / Tune-up / Torque cylinder head nuts / Cylinder compression check test / Spark plug / Ignition timing / Carburetor synchronization / Idle speed / Idle mixture / Specifications

CHAPTER FOUR / HIGH ALTITUDE AND REAR SUSPENSION ADJUSTMENT
Carb tuning / Clutch tuning / Gearing / Suspension adjustment / Specifications

CHAPTER FIVE / ENGINE (PZ480)
Engine lubrication / Service precautions / Serial numbers / Servicing the engine in the frame / Engine removal and installation / Engine top end / Cylinder / Piston, wrist pin and rings / Reed valve assembly / Cooling fan / Drive gear unit / Crankcase and crankshaft /Specifications

CHAPTER SIX / ENGINE (EX750)
Engine lubrication / Service precautions / Serial numbers / Servicing the engine in the frame / Engine removal and installation / Engine top end / Cylinder / Piston, wrist pin and rings / Crankcase and crankshaft /Specifications 

CHAPTER SEVEN / FUEL AND EXHAUST SYSTEMS
Air box filter / Carburetor / Fuel pump / Fuel tanks / Exhaust stem muffler / Specifications

CHAPTER EIGHT / ELECTRICAL
Battery / Electric starting system / Capacitor discharge system CDI / Ignition coil / Ignition unit / Rectifier / Voltage regulator / Switches / Instrument panel warning light / Oil level gauge testing / Thermoswitch testing / Throttle override system / Hand warmer assembly / Lighting headlight taillight head tail / Meter assembly instrument cluster / Fuses / Wiring diagrams schematics/ Specifications

CHAPTER NINE / OIL INJECTION SYSTEM
Oil pump service removal installation / Specifications

CHAPTER TEN / LIQUID COOLING SYSTEM
Thermostat / Water pump / Heat exchanger / Hoses / Specifications

CHAPTER ELEVEN / RECOIL STARTER
Specifications

CHAPTER TWELVE / DRIVE SYSTEM
Drive unit / Primary sheave assembly / Secondary sheave assembly / Drive belt / Specifications

CHAPTER THIRTEEN / BRAKE, CHAINCASE , JACKSHAFT AND DRIVESHAFT
Drive chain and sprockets / Chain case, brake caliper and jack shaft / Drive shaft / Specifications

CHAPTER FOURTEEN / FRONT SUSPENSION AND STEERING
Skis / Front suspension / Steering assembly / Specifications

CHAPTER FIFTEEN / TRACK AND REAR SUSPENSION
Rear suspension / Slide runner / Shock absorber / Front pivot arm / Rear pivot arm / Suspension and guide wheels / Track / Specifications

CHAPTER SIXTEEN / OFF-SEASON STORAGE

INDEX

WIRING DIAGRAMS 

Models covered:
1984-1989 PZ480 Phazer

1987-1989 Yamaha EX570 Exciter

Clymer Manuals Yamaha PZ480 Phazer Manual
Clymer Manuals Yamaha EX570 Exciter Manual

PZ480 Phazer (1984-1989) 
EX570 Exciter (1987-1989)

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