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Yamaha YZ426F(M)/LC User Manual

Yamaha YZ426F(M)/LC
608 pages
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5JG-28199-80
YZ426F
(
M
)
/LC
OWNER’S SERVICE MANUAL
MANUEL D’ATELIER DU
ET PROPRIETAIRE
FAHRER- UND
WARTUNGS-HANDBUCH

Table of Contents

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Yamaha YZ426F(M)/LC Specifications

General IconGeneral
BrandYamaha
ModelYZ426F(M)/LC
CategoryMotorcycle
LanguageEnglish

Summary

INTRODUCTION

IMPORTANT NOTICE

TO THE NEW OWNER

F.I.M. MACHINE WEIGHTS

Specifies the minimum weights for motocross machines according to F.I.M. regulations.

HOW TO USE THIS MANUAL

FINDING THE REQUIRED PAGE

Explains how to locate specific information within the manual using the table of contents and chapter layout.

MANUAL FORMAT

HOW TO READ DESCRIPTIONS

Guides the user on interpreting exploded diagrams, numbered steps, and job instruction charts for disassembly and repair.

ILLUSTRATED SYMBOLS

INDEX

CHAPTER 1 GENERAL INFORMATION

DESCRIPTION

Provides a list and identification of major machine components and controls.

MACHINE IDENTIFICATION

Details on how to find the vehicle and engine serial numbers and the model label for identification.

IMPORTANT INFORMATION

Covers crucial details regarding preparation for disassembly, tool usage, part handling, and safety precautions.

CHAPTER 2 SPECIFICATIONS

GENERAL SPECIFICATIONS

Lists key dimensions, engine type, displacement, bore/stroke, and basic weights of the motorcycle.

MAINTENANCE SPECIFICATIONS ENGINE

Provides detailed technical specifications for engine components, including limits and standards.

MAINTENANCE SPECIFICATIONS CHASSIS

Lists technical specifications for chassis components, including suspension and steering.

MAINTENANCE SPECIFICATIONS ELECTRICAL

Details specifications for the electrical system, including ignition and CDI unit.

CHAPTER 3 REGULAR INSPECTION AND ADJUSTMENTS

MAINTENANCE INTERVALS

Provides a recommended schedule for regular maintenance tasks and lubrication based on usage.

PRE-OPERATION INSPECTION AND MAINTENANCE

Lists essential checks and maintenance tasks to perform before operating the machine.

CHAPTER 4 ENGINE

SEAT, FUEL TANK AND SIDE COVERS

Details the removal and installation procedures for the seat, fuel tank, and side covers.

CARBURETOR

Covers the removal, disassembly, inspection, and installation of the carburetor.

CYLINDER AND PISTON

Provides procedures for the removal, inspection, and installation of the cylinder and piston.

CLUTCH

Details the removal, inspection, and installation procedures for the clutch assembly.

CAMSHAFTS

Covers the removal, inspection, and installation procedures for the camshafts and related components.

CHAPTER 5 CHASSIS

FRONT WHEEL AND REAR WHEEL

Details the removal, inspection, and installation of the front and rear wheels and related parts.

FRONT FORK

Covers the removal, disassembly, inspection, and installation of the front fork assembly.

STEERING

Provides procedures for steering head inspection, adjustment, and related component removal.

REAR SHOCK ABSORBER

Details inspection, handling, and disposal notes for the rear shock absorber assembly.

SWINGARM

Covers the removal, inspection, and installation procedures for the swingarm and related components.

CHAPTER 6 ELECTRICAL

IGNITION SYSTEM

Provides inspection steps for the ignition system to diagnose and resolve engine performance issues.

TPS (THROTTLE POSITION SENSOR) SYSTEM

Guides the user through inspection steps for the TPS to diagnose and resolve operational issues.

CHAPTER 7 TUNING

ENGINE

Provides guidance on carburetor settings based on atmospheric conditions and engine symptoms.

FRONT FORK SETTING

Explains how to adjust front fork settings for air spring, spring preload, and damping force.

REAR SUSPENSION SETTING

Details how to adjust rear suspension settings, including spring preload and damping force.

CHECKING OF CONNECTION

SPECIAL TOOLS

LUBRICATION

CABLE ROUTING DIAGRAM

STEERING HEAD INSPECTION AND ADJUSTMENT

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