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Yamaha Manuals
Motorcycle
1994 YZ250/LC
Owner's service manual
Yamaha 1994 YZ250/LC Owner's Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Important Notice: Safety Information
F.I.M Machine Weights
How to Use this Manual: How to Read Descriptions
Illustrated Symbols
Index
Contents
General Information
Motorcycle Description
Vehicle Identification Number
Frame Serial Number
Engine Serial Number
Preparation for Removal and Disassembly
All Replacement Parts
Gaskets, Oil Seals and O-Rings
Lock Washers/Plates and Cotter Pins
Bearing and Oil Seals
Circlips
Special Tools: for Tune up
Special Tools: for Engine Service
Special Tools: for Chassis Service
Special Tools: for Electrical Service
Control Functions: Engine Stop Button
Control Functions: Clutch Lever
Control Functions: Shift Pedal
Control Functions: Kick Starter
Control Functions: Throttle Grip
Control Functions: Front Brake Lever
Control Functions: Rear Brake Lever
Control Functions: Fuel Cock
Control Functions: Starter Knob (Choke)
Control Functions: Detachable Sidestand
Control Functions: Valve Joint
Fuel and Engine Mixing Oil
Pre-Operation Check List
Starting a Cold Engine
Starting a Warm Engine
Break-In Procedures
Torque-Check Points
Cleaning
Storage
Specifications
Maintenance Specifications: Engine
Specifications: Chassis
Specifications: Electrical
General Torque Specifications
Definition of Units
Cable Routing Diagram
Setting Parts: Front Fork
Setting Parts: Rear Shock Absorber
Regular Inspection and Adjustments
Maintenance Intervals
Coolant Level Inspection
Coolant Replacement
Radiator Cap Inspection
Radiator Cap Opening Pressure Inspection
Cooling System Inspection
Clutch Adjustment
Throttle Cable Adjustment
Air Filter Cleaning
Transmission Oil Level Check
Transmission Oil Replacement
Pilot Air Screw Adjustment
Idle Speed Adjustment
Brake System Air Bleeding
Front Brake Adjustment
Front Brake Pad Inspection and Replacement
Rear Brake Pad Inspection and Replacement
Brake Fluid Level Inspection
Rear Brake Adjustment
Sprockets Inspection
Drive Chain Inspection
Drive Chain Slack Adjustment
Front Fork Inspection
Front Fork Oil Seal and Dust Seal Cleaning
Front Fork Rebound Damping Force Adjustment
Front Fork Compression Damping Force Adjustment
Rear Shock Absorber Inspection
Rear Shock Absorber Spring Preload Adjustment
Rear Shock Absorber Rebound Damping Force Adjustment
Rear Shock Absorber Compression Damping Force Adjustment
Tire Pressure Check
Spokes Inspection and Tightening
Wheel Inspection
Steering Head Inspection and Adjustment
Silencer Fiber Replacement
Lubrication
Spark Plug Inspection
Ignition Timing Check
Engine
Seat, Fuel Tank, Side Covers, Exhaust Pipe and Silencer Preparation for Removal
Radiator and Water Pump: Preparation for Removal
Radiator and Water Pump: Note on Removal and Reassembly
Radiator and Water Pump: Removal Points
Radiator and Water Pump: Inspection
Radiator and Water Pump: Assembly and Installation
Carburetor and Reed Valve: Preparation for Removal
Carburetor and Reed Valve: Specifications
Carburetor and Reed Valve: Note on Removal and Reassembly
Carburetor and Reed Valve: Removal Points
Carburetor and Reed Valve: Inspection
Carburetor and Reed Valve: Assembly and Installation
Cylinder Head, Cylinder and Piston: Preparation for Removal
Cylinder Head, Cylinder and Piston: Note on Removal and Reassembly
Cylinder Head, Cylinder and Piston: Removal Points
Cylinder Head, Cylinder and Piston: Piston and Piston Ring
Cylinder Head: Inspection
Cylinder: Inspection
Piston: Inspection
Piston Pin and Small End Bearing
Piston Ring: Inspection
Piston Clearance
Combination of Piston and Cylinder
Cylinder Head, Cylinder and Piston: Power Valve
Cylinder Head, Cylinder and Piston: Power Valve Hole on Cylinder
Cylinder Head, Cylinder and Piston: Assembly and Installation
Clutch and Primary Driven Gear: Preparation for Removal
Clutch and Primary Driven Gear: Note on Removal and Reassembly
Clutch and Primary Driven Gear: Removal Points
Clutch and Primary Driven Gear: Inspection
Clutch and Primary Driven Gear: Assembly and Installation
Kick Axle, Shift Shaft and Primary Drive Gear: Preparation for Removal
Kick Axle, Shift Shaft and Primary Drive Gear: Note on Removal and Reassembly
Kick Axle, Shift Shaft and Primary Drive Gear: Removal Points
Kick Axle Assembly
Shift Guide and Shift Lever Assembly
Stopper Lever
Kick Axle, Shift Shaft and Primary Drive Gear: Inspection
Kick Axle, Shift Shaft and Primary Drive Gear: Assembly and Installation
YPVS Governor: Preparation for Removal
YPVS Governor: Note on Removal and Reassembly
YPVS Governor: Removal Points
YPVS Governor: Inspection
YPVS Governor: Assembly and Installation
CDI Magneto: Preparation for Removal
CDI Magneto: Note on Removal and Reassembly
CDI Magneto: Removal Points
CDI Magneto: Inspection
CDI Magneto: Assembly and Installation
Engine Removal: Preparation for Removal
Engine Removal: Note on Removal and Reassembly
Engine Removal: Removal Points
Engine Removal: Assembly and Installation
Crankcase and Crankshaft: Preparation for Removal
Crankcase and Crankshaft: Note on Removal and Reassembly
Crankcase and Crankshaft: Removal Points
Crankcase and Crankshaft: Inspection
Crankcase and Crankshaft: Assembly and Installation
Transmission, Shift Cam and Shift Fork: Preparation for Removal
Transmission, Shift Cam and Shift Fork: Note on Removal and Reassembly
Transmission, Shift Cam and Shift Fork: Removal Points
Transmission, Shift Cam and Shift Fork: Inspection
Transmission, Shift Cam and Shift Fork: Assembly and Installation
Chassis
Front Wheel: Preparation for Removal
Front Wheel: Removal Points
Front Wheel: Inspection
Front Wheel: Assembly and Installation
Rear Wheel: Preparation for Removal
Rear Wheel: Removal Points
Rear Wheel: Inspection
Rear Wheel: Assembly and Installation
Front Brake: Preparation for Removal
Front Brake: Note on Removal and Reassembly
Front Brake: Removal Points
Front Brake: Inspection
Front Brake: Assembly and Installation
Rear Brake: Preparation for Removal
Rear Brake: Note on Removal and Reassembly
Rear Brake: Removal Points
Rear Brake: Caliper Piston
Rear Brake: Piston Seal Kit
Rear Brake: Brake Pedal
Rear Brake: Master Cylinder Kit
Rear Brake: Inspection
Rear Brake: Assembly and Installation
Front Fork: Preparation for Removal
Front Fork: Handling Note
Front Fork: Removal Points
Front Fork: Assembly
Front Fork: Installation and Adjustment
Steering: Preparation for Removal
Steering: Removal Points
Steering: Inspection
Steering: Steering Shaft
Steering: Assembly and Installation
Steering: Handlebar
Swingarm: Preparation for Removal
Swingarm: Note on Removal and Reassembly
Swingarm: Removal Points
Swingarm: Inspection
Swingarm: Connecting Rod and Relay Arm
Swingarm: Assembly and Installation
Rear Shock Absorber: Preparation for Removal
Rear Shock Absorber: Notes on Disposal
Rear Shock Absorber: Removal Points
Rear Shock Absorber: Inspection
Rear Shock Absorber: Assembly and Installation
Electrical
Electrical Components
Wiring Diagram
Ignition System: Inspection Steps
Ignition System: Spark Gap Test
Ignition System: Couplers and Leads Connection Inspection
Ignition System: 'Engine Stop' Button Inspection
Ignition System: Ignition Coil Inspection
Ignition System: CDI Magneto Inspection
Ignition System: CDI Unit Inspection
Tuning
Carburetor Tuning: Carburetor Setting
Carburetor Tuning: Test Run
Carburetor Tuning: Improper Throttle Valve Setting
Carburetor Tuning: Main Jet Adjustment
Carburetor Tuning: Air Screw Adjustment
Carburetor Tuning: Idling Adjustment
Carburetor Tuning: Jet Needle Groove Position Adjustment
Carburetor Tuning: Jet Needle Adjustment
Carburetor Tuning: Relationship with Throttle Opening
Carburetor Tuning: Relationship between the Jet Needle Diameter and Clip Position
Carburetor Tuning: Road Condition and Examples of Carburetor Setting
Carburetor Tuning: Examples of Carburetor Setting Depending on Symptom
Spark Plug: Change of the Heat Range
Spark Plug: Heat Range
Gearing: Selection of the Secondary Reduction Ratio
Suspension Tuning
Front Fork: Fork Oil Level
Front Fork: Rebound Damping
Front Fork: Compression Damping
Front Fork: Fork Spring
Front Fork: Fork Clamp Position
Rear Shock: Spring Preload
Rear Shock: Adjustment Steps
Rear Shock: Spring Replacement
Rear Shock: Rebound Damping
Rear Shock: Compression Damping
Troubleshooting: Symptoms of the Front Forks
Troubleshooting: Symptoms of the Rear Shock
Troubleshooting: Readjustment of the Suspension
Troubleshooting: Front and Rear Compatibility
Troubleshooting: General Symptoms and Remedy
Setting Record Table
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Table of Contents
Troubleshooting
Troubleshooting: Symptoms Of The Front Forks
560
Troubleshooting: Symptoms Of The Rear Shock
562
Troubleshooting: Readjustment Of The Suspension
564
Troubleshooting: Front And Rear Compatibility
566
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This manual is also suitable for:
1994 yz250f/lc
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