Yamaha YZ125X1 2008 User Manual

PRINTED IN JAPAN
2007.6—1.1 × 1 !
(E, F, G, H)
YAMAHA MOTOR CO., LTD.
2500 SHINGAI IWATA SHIZUOKA JAPAN
PRINTED ON RECYCLED PAPER
OWNER’S SERVICE MANUAL
MANUEL D’ATELIER DU
PROPRIETAIRE
FAHRER- UND
WARTUNGSHANDBUCH
MANUALE DI SERVIZIO DEL
PROPRIETARI
O
YZ125
(
X
)
/X1
1C3-28199-33
2008
YZ125
(
X
)/X1
2008
1C3-9-33_cover 07.6.14 9:59 AM Page 1

Yamaha YZ125X1 2008 Specifications

General

Brand	Yamaha
Model	YZ125X1 2008
Category	Motorcycle
Language	English

Summary

FOREWORD AND INTRODUCTION

Important Safety and Operation Notices

Comprehensive Safety Guidelines

Crucial safety guidelines for operating the machine safely and responsibly.

SPECIAL TOOLS (Part 1: Engine Tools)

Crankcase, Flywheel, and Rotor Tools

Dial Gauge, Stand, and Crankshaft Installation Tools

Piston Pin Puller Set Usage

SPECIAL TOOLS (Part 2: System Tools)

Fuel Level Gauge and Radiator Tester Tools

Flywheel Puller and Steering Nut Wrench

Cap Bolt Wrenches for Valve and Damper

SPECIAL TOOLS (Part 3: Component Tools)

Fork Seal Driver and Clutch Handling Tools

Ignition System Testers and Sealant

STARTING AND BREAK-IN PROCEDURES

Warm Engine Start and Break-in Steps

Procedures for starting a warm engine and detailed break-in steps for optimal performance.

TORQUE-CHECK POINTS

Frame, Exhaust, and Engine Mounting Torques

Steering, Suspension, and Wheel Torques

Brake and Fuel System Torques

GENERAL SPECIFICATIONS

Model, Code, Dimensions, and Weight Data

Identification details: model name, code number, dimensions, and weight.

Engine, Lubrication, and Fuel System Specs

Engine type, displacement, bore, stroke, lubrication, fuel, and air filter specifications.

Carburetor, Spark Plug, and Clutch Type Specs

Specifications for carburetor, spark plug, and clutch type.

MAINTENANCE SPECIFICATIONS (Part 1)

Transmission, Chassis, and Tire Specifications

Specs for transmission, frame, caster, trail, and tire types and pressures.

Brake, Suspension, and Shock Absorber Details

Details on brake systems, front/rear suspension, and shock absorber types.

Engine Cylinder Maintenance Specs

Maintenance specifications for cylinder head and cylinder bore dimensions and limits.

MAINTENANCE SPECIFICATIONS (Part 2)

Piston, Ring, and Crankshaft Specifications

Maintenance specifications for piston size, clearance, ring dimensions, and crankshaft.

Clutch Plate Thickness and Quantity Details

MAINTENANCE SPECIFICATIONS (Part 3)

Clutch, Transmission, and Shifter Specifications

Carburetor, Reed Valve, and Cooling System Specs

MAINTENANCE SPECIFICATIONS (Part 4)

Water Pump and Steering System Specifications

Front and Rear Suspension and Swingarm Specs

MAINTENANCE SPECIFICATIONS (Part 5)

Wheel, Drive Chain, and Brake System Specifications

Ignition System and CDI Specifications

TIGHTENING TORQUES (ENGINE)

Engine Components: Spark Plug to Carburetor Joints

Torque specifications for engine parts like spark plug, cylinder head, and carburetor joints.

Engine Components: Air Filter to Reed Valve Fasteners

Torque values for air filter case, guide clamp, and reed valve fasteners.

TIGHTENING TORQUES (CHASSIS PART 1)

Chassis: Steering Stem and Handlebar Components Torques

Torque specifications for steering stem, handlebar holders, and steering ring nut.

Chassis: Front Fork and Damper Assembly Torques

Torque values for front fork assembly, adjuster, and damper components.

TIGHTENING TORQUES (CHASSIS PART 2)

Brake System Component Torque Values

Torque specifications for brake system bleeding, caliper, and lever mounting.

Wheel Axle and Engine Mounting Torque Values

Torque values for wheel axles, engine mounting, and frame connections.