Yamaha YZ250FM 2021 Owner's Service Manual

12345678910GENERAL INFORMATIONSAFETY INFORMATION ..................................................................................1-1FOR SAFETY, BE SURE TO OBEY THE FOLLOWING:...........................1-1LOCATION OF IMPORTANT LABELS.............................................................1-4DESCRIPTION..................................................................................................1-5IDENTIFICATION ..............................................................................................1-6VEHICLE IDENTIFICATION NUMBER ......................................................1-6ENGINE SERIAL NUMBER........................................................................1-6INCLUDED PARTS ...........................................................................................1-7SIDESTAND ...............................................................................................1-7NIPPLE WRENCH ......................................................................................1-7HANDLEBAR PROTECTOR ......................................................................1-7FUEL HOSE JOINT COVER ......................................................................1-7POWER TUNER .........................................................................................1-7IMPORTANT INFORMATION ...........................................................................1-9PREPARATION FOR REMOVAL AND DISASSEMBLY ............................1-9REPLACEMENT PARTS ............................................................................1-9GASKETS, OIL SEALS AND O-RINGS .....................................................1-9LOCK WASHERS/PLATES AND COTTER PINS ....................................1-10BEARINGS AND OIL SEALS ...................................................................1-10CIRCLIPS .................................................................................................1-10BASIC SERVICE INFORMATION...................................................................1-11ELECTRICAL SYSTEM ............................................................................1-11SPECIAL TOOLS............................................................................................1-15INSTRUMENT AND CONTROL FUNCTIONS ...............................................1-22ENGINE STOP SWITCH ..........................................................................1-22START SWITCH .......................................................................................1-22MODE SWITCH ........................................................................................1-22SHIFT PEDAL...........................................................................................1-22FRONT BRAKE LEVER ...........................................................................1-22REAR BRAKE PEDAL..............................................................................1-23STARTER KNOB ......................................................................................1-23FUEL TANK CAP......................................................................................1-23STARTING AND BREAK-IN ...........................................................................1-24FUEL.........................................................................................................1-24STARTING A COLD ENGINE ..................................................................1-24STARTING A WARM ENGINE .................................................................1-25