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Yamaha YZ250F User Manual

Yamaha YZ250F
356 pages
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1
GENERAL INFORMATION
LOCATION OF IMPORTANT LABELS............................................................1-1
DESCRIPTION..................................................................................................1-4
IDENTIFICATION .............................................................................................1-5
VEHICLE IDENTIFICATION NUMBER ......................................................1-5
ENGINE SERIAL NUMBER .......................................................................1-5
MODEL LABEL...........................................................................................1-5
FEATURES.......................................................................................................1-6
OUTLINE OF THE FI SYSTEM..................................................................1-6
FI SYSTEM.................................................................................................1-7
INCLUDED PARTS ..........................................................................................1-8
SIDESTAND ...............................................................................................1-8
SPARK PLUG WRENCH ...........................................................................1-8
NIPPLE WRENCH......................................................................................1-8
HANDLEBAR PROTECTOR ......................................................................1-8
FUEL HOSE JOINT COVER ......................................................................1-8
COUPLER FOR CONNECTING OPTIONAL PART...................................1-8
IMPORTANT INFORMATION ........................................................................1-10
PREPARATION FOR REMOVAL AND DISASSEMBLY..........................1-10
REPLACEMENT PARTS..........................................................................1-10
GASKETS, OIL SEALS AND O-RINGS ...................................................1-11
LOCK WASHERS/PLATES AND COTTER PINS ....................................1-11
BEARINGS AND OIL SEALS ...................................................................1-11
CIRCLIPS .................................................................................................1-11
BASIC SERVICE INFORMATION..................................................................1-12
ELECTRICAL SYSTEM............................................................................1-12
SPECIAL TOOLS ...........................................................................................1-15
CONTROL FUNCTIONS ................................................................................1-20
ENGINE STOP SWITCH..........................................................................1-20
CLUTCH LEVER ......................................................................................1-20
SHIFT PEDAL ..........................................................................................1-20
KICKSTARTER LEVER............................................................................1-20
THROTTLE GRIP.....................................................................................1-20
FRONT BRAKE LEVER ...........................................................................1-20
REAR BRAKE PEDAL..............................................................................1-21
STARTER KNOB/IDLE ADJUSTING SCREW.........................................1-21
FUEL TANK CAP .....................................................................................1-21

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Yamaha YZ250F Specifications

General IconGeneral
Displacement250cc
Bore x Stroke77.0 mm x 53.6 mm
Final DriveChain
Suspension / RearKYB® single shock; fully adjustable, 12.5-in travel
Brakes / FrontHydraulic single disc brake, 270mm
Brakes / RearHydraulic single disc brake, 240mm
Fuel Capacity1.6 gal
Engine TypeLiquid-cooled, DOHC, 4-stroke
Fuel DeliveryFuel injection
IgnitionTCI
Transmission5-speed; multiplate wet clutch
Suspension / FrontKYB® Speed-Sensitive System inverted fork; fully adjustable, 12.2-in travel
Tires / Front80/100-21

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