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Yamaha SR125 User Manual

Yamaha SR125
78 pages
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PRINTED IN JAPAN
2001 · 2 - 0.3 × 1 CR
(E)
PRINTED ON RECYCLED PAPER
YAMAHA MOTOR CO., LTD.
3MW-28199-E3
OWNER’S MANUAL
SR125

Table of Contents

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Yamaha SR125 Specifications

General IconGeneral
Engine TypeAir-cooled, 4-stroke, SOHC, 2-valve
Displacement124 cc
Compression Ratio10.0:1
Fuel SystemCarburetor
Ignition SystemCDI
Transmission5-speed
Final DriveChain
Front SuspensionTelescopic fork
Rear BrakeDrum
Front Tire2.75-18
Rear Tire3.00-18
Ground Clearance160 mm
Bore x Stroke54.0 mm x 54.0 mm
Maximum Torque9.5 Nm (0.97 kg-m) @ 8, 000 rpm
Rear SuspensionSwingarm
Front BrakeDisc

Summary

Riding Safety Guidelines

Motorcycle Description and Overview

Instrument and Control Functions

Pre-Operation Checks for Safe Riding

Brake System Pre-Checks

Ensuring front/rear brakes, fluid, and levers are in good condition.

Engine Oil and Drive Chain Inspection

Checking engine oil level and drive chain condition and slack.

Operation and Riding Points

Starting the Engine (Cold and Warm)

Step-by-step procedures for starting the engine under different conditions.

Periodic Maintenance and Minor Repair

Engine Component Servicing

Maintenance procedures for spark plug, engine oil, and air filter.

Chassis and Suspension Servicing

Maintenance for tires, wheels, front fork, and steering system.

Brake System Maintenance

Inspection and adjustment of brake pads, fluid, levers, and pedals.

Drive Chain and Clutch Adjustments

Procedures for adjusting drive chain slack and clutch lever free play.

Electrical System and Battery Care

Maintenance for battery, fuses, bulbs, and electrical connections.

Troubleshooting Common Issues

Diagnosing and resolving problems with fuel, compression, and ignition.

Motorcycle Care and Storage

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