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1991 Yamaha YZ125B owners service manual

Includes the following models

YZ125B / Yamaha Motor Co., Ltd

  • Production year(s): 1991

File specifications

File size: 35.99 MB
File type: ZIP
Language: English

Printable: Yes
Estimated download time: 0.74 Minutes
$18.99 Instant Download

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Product Information

Table of Contents

General Information

  • Safety Information
  • Model Identification
  • Specifications
  • Torque Specifications
  • Tools and Products

Preparation for Use

  • Pre-operation Inspection
  • Break-In Procedures
  • Starting and Warm-Up

Periodic Maintenance and Adjustment

  • Periodic Maintenance Schedule
  • Engine Oil
  • Air Filter Maintenance
  • Throttle and Clutch Adjustment
  • Brakes and Tires
  • Chain and Sprockets
  • Chassis Bolts and Nuts

Engine Overhaul

  • Engine Removal
  • Cylinder and Piston Service
  • Clutch Assembly
  • Crankcase and Crankshaft
  • Transmission and Gearshift Mechanisms
  • Engine Installation

Cooling System

  • Radiator
  • Coolant Replacement and Inspection
  • Water Pump

Fuel System

  • Carburetor Adjustments
  • Carburetor Cleaning
  • Fuel Tank and Valve Operation

Electrical System

  • Ignition System
  • Spark Plug Inspection and Replacement
  • Kill Switch and Electrical Connections

Chassis

  • Front Fork
  • Rear Shock Absorber (Mono-cross)
  • Steering Head Adjustments
  • Wheels and Brakes Maintenance

Troubleshooting

  • Engine Troubleshooting
  • Carburetion Troubleshooting
  • Electrical Troubleshooting
  • Chassis Troubleshooting

Appendices

  • Wiring Diagram
  • Conversion Tables
  • Maintenance Record
  • Special Tools

Index

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This manual is useful to mechanics, technicians, and owners as it provides detailed instructions, diagrams, and specifications for the 1991 Yamaha YZ125 motorcycle. It covers maintenance, troubleshooting, and repair procedures, making it an essential tool for anyone working on or owning this vehicle.

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