Yamaha JT1 Series User Manual

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-~-tr::c';:}';.;·· .. :''= · • YAMAHA
JT1---JT2
SERIES · . · ·
. SERVICE -
MANUAL·

Yamaha JT1 Series Specifications

General

Fuel System	Carburetor
Final Drive	Chain
Front Suspension	Telescopic fork
Rear Suspension	Swingarm
Front Brake	Drum
Rear Brake	Drum
Starting System	Kick
Engine Type	2-stroke, single cylinder

Summary

Chapter 1 General

1-3 Specifications & Performance JT2

Lists detailed specifications and performance data for the JT2 model.

Chapter 2 Yamaha Autolube System

2-3 Handling the Oil Pump

Provides guidance on handling, checking, and adjusting the oil pump assembly.

2-3-1 Checking Minimum Pump Stroke

Details the procedure for checking the minimum stroke of the oil pump.

Chapter 3 Engine

3-1 Engine Removal

Provides a step-by-step guide for removing the engine from the motorcycle frame.

3-2 Cylinder Head

Details the removal, inspection, and cleaning of the cylinder head.

3-3 Cylinder

Covers cylinder removal, wear checking, and reconditioning procedures.

3-5 Piston Ring

3-6 Piston

3-9 Clutch

3-17 Crankshaft

Covers the crankshaft's precision nature, removal, installation, and inspection.

Chapter 4 Chassis

4-1 Front Wheel

4-2 Rear Wheel

4-5 Front Fork Removal

Chapter 5 Electrical System

5-3 Ignition System-Function and Service

5-4 Ignition Timing

5-7 Charging System

Appendix III: Lubrication Intervals

Appendix IV: Pre-Operation Check Chart

Torque Specifications

Wiring Diagram (JT2)