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1989-1991 Yamaha YFM 250, Moto-4 ATV  repair manual Preview image 1
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1989-1991 Yamaha YFM 250, Moto-4 ATV repair manual

Models covered in this manual:

  • 1989 Yamaha YFM 250
  • 1989 Yamaha Moto-4
  • 1990 Yamaha YFM 250
  • 1990 Yamaha Moto-4
  • 1991 Yamaha YFM 250
  • 1991 Yamaha Moto-4

File specifications

File size: 61.37 MB
File type: PDF
Language: English

Printable: Yes
Estimated download time: 1.26 Minutes
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Product Information

Table of Contents

General Information

  • Machine Identification
  • Vehicle Identification Number (VIN)
  • Frame Serial Number
  • Engine Serial Number
  • Important Information
  • Special Tools

Specifications

  • General Specifications
  • Maintenance Specifications
  • General Torque Specifications
  • Lubrication Points and Lubricant Type
  • Cable Routing

Periodic Inspection and Adjustment

  • Introduction
  • Periodic Maintenance/Lubrication
  • Carries and Fenders
  • Engine
    • Valve Clearance Adjustment
    • Timing Chain Tensioner Adjustment
    • Idle Speed Adjustment
    • Throttle Cable Free Play Adjustment
    • Spark Plug Inspection
    • Compression Pressure Measurement
    • Engine Oil Level Inspection
    • Engine Oil Replacement
    • Engine Oil Filter Replacement
    • Air Filter Cleaning
    • Carburetor Adjustment
    • Clutch Adjustment
    • Crankcase Ventilation System Inspection
    • Cooling System Inspection
  • Chassis
    • Rear Brake Inspection
    • Front Brake Inspection/Adjustment
    • Wheel and Tire Inspection
    • Final Gear Oil Level Inspection
    • Swingarm Pivot Inspection/Adjustment
    • Steering Shaft Bushing Lubrication
  • Electrical
    • Battery Inspection
    • Fuse Inspection
    • Headlight Beam Adjustment
    • Headlight Bulb Replacement

Engine Overhaul

  • Engine Removal
    • Preparation for Removal
    • Front Carrier and Front Fender
    • Rear Carrier and Rear Fender
    • Rear Axle
    • Exhaust Pipe and Muffler
    • Drive V-Belt Cover
    • Engine Mount
    • Wiring and Hoses
    • Starter Motor
  • Engine Disassembly
    • Cylinder Head Removal
    • Cylinder and Piston Removal
    • Crankshaft Removal
    • Transmission Removal
    • Inspection and Repair

Carburetion

  • Carburetor Disassembly/Assembly
  • Carburetor Cleaning/Inspection

Drive Train

  • Drive Chain/Belt Inspection and Adjustment
  • Final Drive Removal/Installation

Chassis

  • Frame Inspection
  • Suspension System Inspection
  • Steering System Inspection
  • Brake System Inspection

Electrical

  • Wiring Diagram
  • Ignition System Inspection
  • Charging System Inspection
  • Lighting System Inspection

Troubleshooting

  • Engine Troubleshooting
  • Electrical Troubleshooting
  • Chassis Troubleshooting

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