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Yamaha GT1 User Manual

Yamaha GT1
75 pages
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Yamaha GT1 Specifications

General IconGeneral
Fuel SystemFuel injection
Ignition SystemTCI
Lubrication SystemWet sump
Front SuspensionTelescopic fork
Displacement124 cm3
Starting SystemElectric starter
Engine Oil Capacity1.0 L
Front BrakeSingle disc
Rear BrakeDrum
Rear Tire90/90-14M/C 46P Tubeless

Summary

CHAPTER I. GENERAL

1-1. Profile

Overview of the GT1 model's appearance.

GTMX Profile

Overview of the GTMX model's appearance.

1-2. Features of Yamaha GT1-GTMX

Key characteristics and advantages of the GT1-GTMX motorcycle.

1-3. Specifications & Performance GT1-GTMX

Technical data and performance metrics for both models.

1-4. Performance Curves

Graphical representation of engine and driving performance.

1-5. Tools and Instruments for Shop Service

Listing of necessary tools for maintenance and repair.

CHAPTER 2. YAMAHA AUTOLUBE

2-1. What is YAMAHA Autolube?

Explanation of the automatic lubrication system.

2-2. Features of YAMAHA Autolube

Benefits and advantages of the Autolube system.

2-3. Handling the Oil Pump

Procedures for oil pump maintenance, checking, and adjustment.

2-3-B. Carburetor and Autolube Cable Adjustments

Steps for adjusting the carburetor and autolube cables.

2-3-C. Bleeding

Procedure for bleeding the autolube oil pump.

CHAPTER 3. WHAT IS THE TORQUE INDUCTION

3-1. Reed Valve-construction and Handling

Details on the reed valve's design and proper care.

3-2. Action of Piston in Torque Induction

Explanation of piston movement and its effect on torque induction.

CHAPTER 4. ENGINE

4-1. Engine Removal

Step-by-step guide to removing the engine from the chassis.

4-2. Reed Valve

Procedures for removing and inspecting the reed valve assembly.

4-3. Cylinder Head

Instructions for removing and installing the cylinder head.

4-4. Cylinder

Details on cylinder wear checking, reconditioning, and installation.

4-5. Piston Pin

Steps for removing and fitting the piston pin.

4-6. Piston Ring

Methods for installing, checking, and removing piston rings.

4-7. Piston

Guidance on checking piston clearance and installation direction.

4-8. Crankcase Cover (R.H.)

Procedures for removing and installing the right-hand crankcase cover.

4-9. Clutch

Detailed inspection and maintenance of the clutch assembly.

4-10. Primary Drive Gear

Steps for removing and inspecting the primary drive gear.

4-11. Kick Starter Mechanism

Explanation of the kick starter system and its components.

4-12. Shift Mechanism

Description of the gear shifting system and its operation.

4-13. Drive Sprocket

Instructions for removing and checking the drive sprocket.

4-14. Crankcase

Procedures for separating and reassembling the crankcase halves.

4-15. Transmission Assembly

Overview of the transmission gears, ratios, and layout.

CHAPTER 5. CHASSIS

5-1. Front Wheel

Detailed steps for removing and checking the front wheel assembly.

5-2. Rear Wheel

Procedures for removing and inspecting the rear wheel assembly.

5-3. Rear Sprocket

Instructions for removing, checking, and adjusting the rear sprocket.

5-4. Tires and Tubes

Information on recommended tire pressures for riding.

5-5. Front Forks

Steps for removing, disassembling, and assembling front forks.

5-6. Rear Shocks

Procedure for checking the condition of rear shock absorbers.

5-7. Gas Tank

Instructions for removing the fuel tank from the frame.

5-8. Rear Swing Arm

Steps for removing, checking, and replacing swing arm components.

5-9. Steering Head

Guidance on checking steering head bearings and balls for wear.

5-10. Oil Tank, Battery Box and Tool Box

Location and function of these chassis components.

5-11. Frame

Description of the frame's design, construction, and mounting points.

5-12. Handlebars

Information on the handlebars and meter bracket mounting.

5-13. Miscellaneous

Details on the footrest and engine guard construction.

CHAPTER 6. ELECTRICAL SYSTEM

6-1. Description

Overview of the ignition system's flywheel magneto.

6-2. Table of Component Parts

List of electrical components and their manufacturers.

6-3. Connection Diagram

Wiring diagrams for GT1 and GTMX electrical systems.

6-4. Ignition System-Function and Service

Explanation of how the ignition system generates spark.

6-5. Ignition Timing

Procedure for setting the ignition timing using a dial indicator.

6-6. Ignition Coil

Specifications and testing methods for the ignition coil.

6-7. Condenser

Function and testing procedures for the ignition condenser.

6-8. Charging System

Details on charging system components and capacity testing.

6-9. Battery (GTI)

Information on battery specifications, service life, and storage.

6-10. Checking the Main Switch (removed from the chassis)

Procedure for checking the main switch continuity.

6-11. Spark Plug

Guidance on spark plug inspection, cleaning, and replacement.

6-12. Lighting and Signal Systems (GTI)

Details on headlight, taillight, horn, and speedometer systems.

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