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Manuals
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Yamaha Manuals
Motorcycle
YTZ250S 1986
Service manual
Yamaha YTZ250S 1986 Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
D General Information
Table of Contents
MACHINE Identification
Vehicle Identification Number
Engine Serial Number
Control Functions
Fuel, Oil and Coolant
Fuel
Engine Mixing Oil
Transmission Oil
Coolant Level
Coolant Draining
Replenishing Coolant
Safety Information
Ride with Care and Good Judgement
Wear Protective Clothing
Be Careful Where You Ride
Modification
Riding Your Tri-Moto
Getting to Know Your Tri-Moto
Learning to Ride Your Tri-Moto
Turning Your Tri-Moto
Climbing Uphill
Riding Downhill
Crossing a Slope
Crossing through Shallow Water
Riding over Rough Terrain
Sliding and Skidding
What to Do if
Preoperation Checks
Starting and Break-In
Starting a Cold Engine
Starting a Warm Engine
Break-In Procedures
Cleaning and Storage
Cleaning
Storage
Fj Regular Maintenance and Adjustment
Maintenance Intervals
Lubrication
Special Tools
For Tune-Up
For Engine Service
For Chassis Service
For Electrical Components
Minor Maintenance and Adjustments
Spark Plug
Ignition Timing
Throttle Lever Adjustment
Idle Speed
Air Filter
Clutch
Front Brake Adjustment
Rear Brake Pedal Height Adjustment
Checking the Front and Rear Brake Pads
Inspecting the Brake Fluid Level
Drive Chain Slack Check
Drive Chain Slack Adjustment
Drive Chain Cleaning and Lubrication
Steering Head Adjustment
Wheel Bearings
Fuel Cock
Tires
Cable Inspection and Lubrication
Brake and Change Pedal/Clutch and Brake Levers
Headlight Bulb Replacement
Headlight Beam Adjustment
II Engine Maintenance and Repair
Engine Maintenance and
PREPARATION for Service
Carburetor
Tuning
Tuning and Repair Parts
Main Jet Replacement
Removal
Inspection
Float Height
Reed Valve
Inspection
Exhaust Pipe and Muffler
Removal
Maintenance
Cylinder Head
Removal
Maintenance
Cylinder
Removal
Maintenance
Piston
Maintenance
Piston Clearance
Piston Rings
Piston Pin, Bearing
Assembly
Crankcase Cover
Removal
Assembly
Water Pump
Disassembly
Inspection
Assembly
Kick Starter
Removal
Inspection
Assembly
Clutch
Removal
Maintenance
Installation
Mechanism Adjustment
Shifter
Removal
Inspection
Installation
Engine Removal
Crankcase
Crankcase Disassembly
Engine Mounting
Transmission and Shifter
Inspection
Bearing and Oil Seals
Transmission Installation
Crankshaft
Inspection
Crankshaft Installation
COOLING System
Radiator Removal
Thermostatic Valve Removal
Cooling System Checks
10 Chassis Maintenance and Repair
Chassis Maintenance and Repair
Front Wheel
Removal
Front Axle Inspection
Front Wheel Inspection
Replacing the Wheel Bearings
Installing the Front Wheel
Rear Wheel
Removal
Rear Wheel Inspection
Installing the Rear Wheel
Front Brake
Brake Pad Replacement
Caliper Disassembly
Master Cylinder Disassembly
Brake Inspection and Repair
Brake Assembly
Rear Brake
Brake Pad Replacement
Caliper Disassembly
Master Cylinder Disassembly
Brake Inspection and Repair
Brake Assembly
Front Fork
Fork Oil Replacement
Removal and Disassembly
Inspection
Assembly
Steering Head
Adjustment
Removal
Inspection
Installation
Rear Shock (Monocross Suspension "De Carbon" System)
Rear Shock Setting
Handling Notes
Notes on Disposal (Yamaha Dealers Only)
Removal
Swingarm
Swingarm Free Play Inspection
Removal
Inspection
Assembly
Drive Chain
II Electrical Troubleshooting
Electrical Troubleshooting
Ytz250S Wiring Diagram
IGNITION System
LIGHTING System
SIGNAL System
Mappendices
Troubleshooting Guide
Engine Is Hard to Start or Does Not Start
Poor High Speed Performance
Overheat
Low Coolant Level
Transmission and Shifter
Clutch
Chassis
Specifications
Definition of Units
GENERAL TORQUE Specifications
Conversion Tables
Cable Routing
Maintenance Record
Noise Regulation
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INDEX
GENERAL INFORMATION
REGULAR MAINTENANCE
AND ADJUSTMENTS
ENGINE MAINTENANCE AND
REPAIR
CHASSIS MAINTENANCE
AND REPAIR
ELECTRICAL
TROUBLESHOOTING
APPENDICES
Table of
Contents
Previous
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Chapters
D General Information
2
Fj Regular Maintenance and Adjustment
22
II Engine Maintenance and Repair
40
10 Chassis Maintenance and Repair
78
II Electrical Troubleshooting
110
Mappendices
124
Table of Contents
Troubleshooting
ELECTRICAL TROUBLESHOOTING
112
TROUBLESHOOTING GUIDE
125
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