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Yamaha YZ250F(Y) User Manual

Yamaha YZ250F(Y)
190 pages
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PRINTED ON RECYCLED PAPER
YAMAHA MOTOR CO., LTD.
2500 SHINGAI IWATA SHIZUOKA JAPAN
2009
5XC-28199-35
YZ250F(Y)
OWNER’S SERVICE MANUAL
MANUEL D’ATELIER DU
PROPRIETAIRE
FAHRER- UND
WARTUNGSHANDBUCH
MANUALE DI SERVIZIO DEL
PROPRIETARIO
PRINTED IN JAPAN
2008.05-4.2×1 CR
(E,F,G,H)
YZ250F(Y)
2009
Il convient de lire attentivement ce manuel avant la première utilisation du véhicule.
Read this manual carefully before operating this vehicle.
Bitte lesen Sie diese Bedienungsanleitung sorgfältig durch, bevor Sie das Fahrzeug in Betrieb nehmen.
Leggere attentamente questo manuale prima di utilizzare questo veicolo.

Table of Contents

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Yamaha YZ250F(Y) Specifications

General IconGeneral
Displacement250cc
Fuel SystemFuel Injection
IgnitionTCI
Final DriveChain
Front BrakeHydraulic single disc brake, 270mm
Fuel Capacity1.6 gal
Width32.5 in
Engine Type4-stroke, liquid-cooled, DOHC, 4-valve
Bore x Stroke77.0mm x 53.6mm
TransmissionConstant-mesh 5-speed; multiplate wet clutch
Front SuspensionKYB® Speed-Sensitive System, inverted fork; fully adjustable, 12.2-in travel
Rear SuspensionKYB® single shock; fully adjustable, 12.5-in travel
Front Tire80/100-21

Summary

GENERAL INFORMATION

STARTING AND BREAK-IN PROCEDURES

Details procedures for starting cold/warm engines and crucial break-in guidelines.

TORQUE-CHECK POINTS

Lists critical fasteners and components that require regular torque checks.

SPECIFICATIONS

TIGHTENING TORQUES

Provides specific torque values for various engine and chassis fasteners.

REGULAR INSPECTION AND ADJUSTMENTS

MAINTENANCE INTERVALS

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

PRE-OPERATION INSPECTION AND MAINTENANCE

Lists daily checks and maintenance items to ensure the machine is in good operating condition.

ENGINE INSPECTION AND ADJUSTMENTS

Details procedures for checking and adjusting engine components like coolant, clutch, and throttle.

ENGINE

CYLINDER HEAD AND PISTON

Details procedures for removing, inspecting, and installing the cylinder head and piston.

ENGINE REMOVAL

Step-by-step guide for removing the entire engine from the motorcycle frame.

CHASSIS

FRONT AND REAR BRAKES

Details procedures for removing, inspecting, and servicing brake systems.

ELECTRICAL SYSTEM

IGNITION SYSTEM

Details inspection steps for spark gap, ignition coil, CDI magneto, and switches.

TUNING

ENGINE TUNING (CARBURETOR SETTINGS)

Explains how atmospheric conditions affect the air-fuel mixture and how to adjust the carburetor.

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