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Yamaha YZ450FY 2009 User Manual

Yamaha YZ450FY 2009
278 pages
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LIT-11626-22-57
PRINTED IN JAPAN
2008.05-3.8×1 CR
(E)
PRINTED ON RECYCLED PAPER
YZ450FY
YAMAHA MOTOR CO., LTD.
2500 SHINGAI IWATA SHIZUOKA JAPAN
YZ450FY
34P-28199-10
OWNER’S SERVICE MANUAL
Read this manual carefully before operating this vehicle.
2009
2009
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Yamaha YZ450FY 2009 Specifications

General IconGeneral
BrandYamaha
ModelYZ450FY 2009
CategoryMotorcycle
LanguageEnglish

Summary

INTRODUCTION

IMPORTANT MANUAL INFORMATION

Distinguishes important information notations like WARNING, NOTICE, and TIP.

SAFETY INFORMATION

YAMAHA MOTOR CORPORATION, U.S.A. YZ MOTORCYCLE LIMITED WARRANTY

F.I.M. MACHINE WEIGHTS

HOW TO USE THIS MANUAL

MANUAL FORMAT

Describes the sequential, step-by-step format of the manual's procedures.

HOW TO READ PARTS DESCRIPTIONS

ILLUSTRATED SYMBOLS

CHAPTER 1 GENERAL INFORMATION

IMPORTANT INFORMATION

Provides crucial details on preparation for disassembly, replacement parts, and seals.

SPECIAL TOOLS

Lists specific tools required for tune-up and assembly with their part numbers.

CHAPTER 2 SPECIFICATIONS

GENERAL SPECIFICATIONS

Provides overall dimensions, engine type, displacement, and other general specs.

TIGHTENING TORQUES

Specifies torque values for various engine and chassis fasteners.

CHAPTER 3 REGULAR INSPECTION AND ADJUSTMENTS

MAINTENANCE INTERVALS

Provides a schedule for inspection and maintenance based on usage intervals.

PRE-OPERATION INSPECTION AND MAINTENANCE

Lists essential checks before riding for break-in, practice, or racing.

ENGINE

Details procedures for checking and changing engine coolant and related components.

CHASSIS

Covers bleeding the hydraulic brake system and adjusting brake lever/pedal positions.

ELECTRICAL

Covers electrical system components, wiring diagrams, and troubleshooting.

CHAPTER 4 ENGINE

CARBURETOR

Explains carburetor removal, disassembly, inspection, and adjustment procedures.

CAMSHAFTS

Details camshaft removal, inspection, and installation, including valve clearance adjustment.

CYLINDER AND PISTON

Covers cylinder and piston removal, inspection, and installation.

CLUTCH

Details clutch removal, inspection, and installation procedures.

ENGINE REMOVAL

Provides step-by-step instructions for removing the entire engine assembly.

CRANKCASE AND CRANKSHAFT

Covers crankcase disassembly, crankshaft installation, and bearing checks.

TRANSMISSION, SHIFT CAM AND SHIFT FORK

Details transmission removal, inspection, and installation of gears, cams, and forks.

CHAPTER 5 CHASSIS

FRONT WHEEL AND REAR WHEEL

Details removal, inspection, and installation of front and rear wheels.

FRONT BRAKE AND REAR BRAKE

Covers brake system removal, disassembly, and installation of calipers and master cylinders.

FRONT FORK

Details front fork removal, disassembly, assembly, and setting procedures.

STEERING

Details steering system removal, inspection, and installation of stem and bearings.

SWINGARM

Covers swingarm removal, inspection, and installation of bearings and suspension linkage.

REAR SHOCK ABSORBER

Details rear shock absorber removal, inspection, and installation procedures.

CHAPTER 6 ELECTRICAL

IGNITION SYSTEM

Details inspection steps for ignition system failure and spark plug checks.

THROTTLE POSITION SENSOR SYSTEM

Guides through inspection and troubleshooting of the throttle position sensor.

CHAPTER 7 TUNING

ENGINE

Covers carburetor settings, atmospheric conditions, and effects of parts on throttle response.

CHASSIS

Discusses selection of secondary reduction ratio and suspension settings.

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