Yamaha YZ450FX 2021 Owner's Service Manual page 11

GENERAL INFORMATION
SAFETY INFORMATION ..................................................................................1-1
FOR SAFETY, BE SURE TO OBEY THE FOLLOWING:...........................1-1
LOCATION OF IMPORTANT LABELS.............................................................1-4
DESCRIPTION..................................................................................................1-5
IDENTIFICATION ..............................................................................................1-6
VEHICLE IDENTIFICATION NUMBER ......................................................1-6
ENGINE SERIAL NUMBER........................................................................1-6
INCLUDED PARTS ...........................................................................................1-7
NIPPLE WRENCH ......................................................................................1-7
HANDLEBAR PROTECTOR ......................................................................1-7
FUEL HOSE JOINT COVER ......................................................................1-7
POWER TUNER .........................................................................................1-7
IMPORTANT INFORMATION ...........................................................................1-9
PREPARATION FOR REMOVAL AND DISASSEMBLY ............................1-9
REPLACEMENT PARTS ............................................................................1-9
GASKETS, OIL SEALS AND O-RINGS .....................................................1-9
LOCK WASHERS/PLATES AND COTTER PINS ....................................1-10
BEARINGS AND OIL SEALS ...................................................................1-10
CIRCLIPS .................................................................................................1-10
BASIC SERVICE INFORMATION...................................................................1-11
ELECTRICAL SYSTEM ............................................................................1-11
SPECIAL TOOLS............................................................................................1-15
INSTRUMENT AND CONTROL FUNCTIONS ...............................................1-21
WARNING LIGHTS ..................................................................................1-21
ENGINE STOP SWITCH ..........................................................................1-21
START SWITCH .......................................................................................1-21
MODE SWITCH ........................................................................................1-21
SHIFT PEDAL...........................................................................................1-22
FRONT BRAKE LEVER ...........................................................................1-22
REAR BRAKE PEDAL..............................................................................1-22
SIDESTAND .............................................................................................1-22
STARTER KNOB ......................................................................................1-22
FUEL TANK CAP......................................................................................1-23
STARTING AND BREAK-IN ...........................................................................1-24
FUEL.........................................................................................................1-24
STARTING A COLD ENGINE ..................................................................1-24
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