1991 Yamaha Yz80 Yz 80 Service Repair Workshop Manual
FILE DETAILS:
1991 Yamaha Yz80 Yz 80 Service Repair Workshop Manual
LANGUAGE:ENGLISH
PAGES:200
DOWNLOADABLE:YES
FILE TYPE:PDF
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DESCRIPTION:
1991 Yamaha Yz80 Yz 80 Service Repair Workshop Manual
This manual will provide you with a good basic understanding of features, operation, and basic main- tenance and inspection items of this machine. Please read this manual carefully and completely before operating your new machine. The suspension and carburetor on this machine can be adjusted. For details of tuning, refer to the “RACE PREPARATION AND TUNING MANUAL” (90894.87100). If you have any questions regarding the operation of maintenance of your machine, please consult your Yamaha dealer.This manual should be considered a permanent part of this machine and should remain with it even if the machine is subsequently sold.
TABLE OF CONTENTS:
1991 Yamaha Yz80 Yz 80 Service Repair Workshop Manual
YZ80B Owner's Service Manual..................................... 1 Introduction................................................. 3 How to use this Manual....................................... 4 Illustrated Symbols...................................... 5 Warranty..................................................... 8 Index........................................................ 9 Chapter 1 General Information................................ 10 Description.............................................. 11 Machine Identification................................... 12 Important Information.................................... 13 Special Tools............................................ 15 Control Functions........................................ 18 Fuel, Oil and Coolant.................................... 20 Pre-Operation Check List................................. 22 Starting and Break-In.................................... 23 Cleaning and Storage..................................... 25 Torque-Check Points...................................... 26 Cleaning and Storage..................................... 28 Chapter 2 Regular Maintenance and Adjustment................. 30 Maintenance Intervals.................................... 31 Lubrication.............................................. 33 Engine................................................... 34 Chassis.................................................. 43 Electrical............................................... 61 Chapter 3 Engine Maintenance and Repair...................... 63 Carburetor and Reed Valve................................ 64 Cylinder Head, Cylinder and Piston....................... 74 Primary Drive Gear, Clutch, Kick Axle and Shift Shaft.... 85 CDI Magtneto............................................. 96 Crankshaft, Transmission and Shifter.....................100 Chapter 4 Cooling System Maintenance and Repair..............115 Water Pump...............................................116 Radiator.................................................121 Chapter 5 Chassis Maintenance and Repair.....................125 Front Wheel..............................................126 Rear Wheel, Rear Brake and Drive Chain...................130 Front Brake..............................................136 Front Fork...............................................146 Steering Head............................................155 Rear Shock Absorber......................................161 Swingarm.................................................166 Chapter 6 Electrical.........................................172 Circuit Diagram..........................................173 Electrical Components....................................174 Ignition System..........................................175 Chapter 7 Appendices.........................................180 Troubleshooting Guide....................................181 Specifications...........................................186 General Torque Specifications / Definition of Units......195 Setting Charts...........................................196 Cable Routing............................................198 Wiring Diagram...........................................200
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⦁ This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
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