MANUEL D'ENTRETIEN POUR MOTO

MODELS COVERED:

IT125 (1980-1981)
IT175 (1977-1983)
IT200 (1984-1986)
IT250 (1977-1983)
IT400 (1976-1979)
IT425 (1980)
IT465 (1981-1982)
IT490 (1983-1984)

This Yamaha vintage manual is 352 pages.

QUICK REFERENCE DATA

CHAPTER ONE / GENERAL INFORMATION
Manual organization / Service hints / Torque specifications / Safety first / Special tips / Parts replacement / Expendable supplies / What year is it? / Serial numbers / Basic hand tools / Tune-up and troubleshooting tools / Fasteners / Mechanic's tips / Specifications

CHAPTER TWO / TROUBLESHOOTING
Operating requirements / Troubleshooting instruments / Emergency troubleshooting / Engine starting / Engine performance / Engine noises / Excessive vibration / Two-stroke pressure testing / Front suspension and steering / Brake problems / Specifications

CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP
Pre-checks / Tires and wheels / Lubricants / Cleaning solvent / Periodic lubrication / Engine lubrication / Transmission oil checking and changing / Front fork oil change / Drive chain lubrication and adjustment / Periodic maintenance / Monoshock adjustment / Clutch mechanism and cable adjustment / Throttle adjustment / Air cleaner service / Engine tune-up / Cylinder head nuts torque / Spark plug / Ignition timing / Idle speed adjustment / Decarbonizing / engine and exhaust system / Storage / Specifications

CHAPTER FOUR / ENGINE
Engine principles / Engine lubrication / Engine cooling / Servicing engine in frame / Engine / Cylinder head / Cylinder / Piston, piston pin, and piston rings / Break-in procedure / Magneto / Reed valve assembly / Compression release (IT400C only) / Crankcase and crankshaft / Kickstarter / Service and adjustment / Specifications

CHAPTER FIVE / CLUTCH AND TRANSMISSION
Clutch / Clutch cable / Clutch release (push lever) mechanism / External shift mechanism / Transmission and internal shift mechanism / Specifications

CHAPTER SIX / FUEL AND EXHAUST SYSTEMS
Air cleaner / Carburetor operation / Carburetor service / Carburetor adjustments / Fuel shutoff valve / Fuel tank / Fuel filter / Exhaust system / Exhaust system decarbonizing / Exhaust system repair / Specifications

CHAPTER SEVEN / ELECTRICAL SYSTEM
Capacitor discharge ignition / Spark plug / Magneto / Ignition coil / Engine kill switch / Lighting system / Speedometer housing / Wiring diagrams / Specifications

CHAPTER EIGHT / FRONT SUSPENSION AND STEERING
Front wheel / Front hub / Wheels / Tire changing / Tire repairs / Handlebar / Steering head / Front fork / Specifications

CHAPTER NINE / REAR SUSPENSION
Rear wheel / Rear hub / Drive sprocket / Drive chain / Wheel balancing / Tire changing and tire repairs / Rear swing arm / Rear suspension (DeCarbon monocross system) / Rear suspension (monocross type) / Specifications

CHAPTER TEN / BRAKES
Front brake / Rear brake / Front brake cable / Rear brake pedal assembly / Specifications

CHAPTER ELEVEN / FRAME AND REPAINTING
Kickstand (sidestand) / Footpegs / Frame / Specifications

SUPPLEMENT / 1981 AND LATER SERVICE INFORMATION

INDEX

WIRING DIAGRAMS