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1986 Yamaha YZ250 repair manual

Models covered in this manual:

YZ250 / Yamaha Motor Corporation, Ltd / Yamaha Motor Company

  • 1986 Yamaha YZ250S
  • Production/model years: 1986
  • Engine: 249 cc, 15 cu in, water-cooled reed-valve two-stroke single, liquid-cooled

File specifications

File size: 17.25 MB
File type: ZIP
Language: English

Printable: Yes
Estimated download time: 0.35 Minutes
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Product Information

Table of Contents

General Information

  • Machine Identification
  • Vehicle Identification Number
  • Control Functions
  • Fuel, Oil, and Coolant
    • Fuel
    • Engine Oil
    • Transmission Oil
    • Coolant
    • Coolant Draining
    • Coolant Refilling
  • Pre-operation Checks
  • Starting and Break-in
    • Starting a Cold Engine
    • Break-in Procedures
  • Cleaning and Storage
    • Cleaning
    • Storage

Regular Maintenance and Adjustments

  • Periodic Maintenance Schedule
  • Engine Oil Replacement
  • Carburetor Adjustment
  • Clutch Adjustment
  • Transmission Oil Replacement
  • Air Filter Cleaning
  • Chassis Maintenance
    • Checking and Lubricating the Cables
    • Checking and Lubricating the Chain
    • Tire Inspection and Pressure Adjustment
    • Spoke Tightening

Engine Maintenance and Repair

  • Engine Disassembly
  • Engine Overhauling
  • Piston and Cylinder Inspection
  • Clutch and Gearbox Repair
  • Engine Reassembly
  • Engine Installation

Chassis Maintenance and Repair

  • Front Fork Maintenance
  • Rear Shock Absorber Maintenance
  • Brakes Overhaul
  • Steering Head Bearings

Electrical

  • Electrical Components
  • Ignition System
  • Switches and Sensors
  • Wiring Diagrams

Appendices

  • Torque Specifications
  • Special Tools
  • Troubleshooting
  • Wiring Diagrams

The 1986 Yamaha YZ250 repair manual is a valuable resource for mechanics, technicians, and owners as it provides detailed information on maintenance, repair, and troubleshooting procedures specific to the 1986 model of the Yamaha YZ250.

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