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The original Haynes Repair Manual - Based on a complete stripdown and rebuild of a vehicle

Yamaha IT400 (1976 - 1979)

  • Includes online edition!
  • What's Included

    Use the online manual straight away
    Book ships next working day (before 5pm)
    Fault Finder - Diagnose 400+ problems
    Take on bigger jobs with Haynes’ help
    Wiring diagrams for key vehicle systems
    Extra videos in online manual
    700+ pictures & diagrams of your vehicle
  • Print edition only!
  • What's Included

    Book ships next working day (before 5pm)
    Fault Finder - Diagnose 400+ problems
    Take on bigger jobs with Haynes’ help
    Wiring diagrams for key vehicle systems
    700+ pictures & diagrams of your vehicle
    Suitable for novice and pro mechanics
  • Digital edition!
  • What's Included

    Digital edition of the classic Haynes Manual
    Instant access - Fix your vehicle today!
    Fault Finder - Diagnose 400+ problems
    Take on bigger jobs with Haynes’ help
    Wiring diagrams for key vehicle systems
    700+ pictures & diagrams of your vehicle
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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

Models covered:
1980 1981 Yamaha IT125
1977 1978 1979 1980 1981 1982 1983 Yamaha IT175
1984 1985 1986 Yamaha IT200
1977 1978 1979 1980 1981 1982 1983 Yamaha IT250
1976 1977 1978 1979 Yamaha IT400
1980 Yamaha IT425
1981 1982 Yamaha IT465
1983 1984 Yamaha IT490

Clymer Manuals Yamaha IT125 Manual
Clymer Manuals Yamaha IT175 Manual
Clymer Manuals Yamaha IT200 Manual
Clymer Manuals Yamaha IT250 Manual
Clymer Manuals Yamaha IT400 Manual
Clymer Manuals Yamaha IT425 Manual
Clymer Manuals Yamaha IT465 Manual
Clymer Manuals Yamaha IT490 Manual

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

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