Periodic Checks And Adjustments - Yamaha YZ250FX 2021 Owner's Manual

PERIODIC CHECKS AND ADJUSTMENTS

MAINTENANCE INTERVALS ...........................................................................3-1
MAINTENANCE INTERVALS.....................................................................3-1
PRE-OPERATION INSPECTION AND MAINTENANCE .................................3-5
GENERAL INSPECTION AND MAINTENANCE ........................................3-5
ENGINE.............................................................................................................3-6
ADJUSTING THE VALVE CLEARANCE....................................................3-6
CHECKING THE ENGINE IDLING SPEED................................................3-7
CHECKING THE THROTTLE GRIP ...........................................................3-7
CHECKING THE SPARK PLUG.................................................................3-8
CHECKING THE ENGINE OIL LEVEL .......................................................3-9
CHANGING THE ENGINE OIL...................................................................3-9
ADJUSTING THE CLUTCH LEVER FREE PLAY ....................................3-11
ADJUSTING THE CLUTCH LEVER POSITION.......................................3-12
CLEANING THE AIR FILTER ELEMENT .................................................3-12
CHECKING THE THROTTLE BODY JOINT ............................................3-13
CHECKING THE FUEL LINE ...................................................................3-14
CHECKING THE CYLINDER HEAD BREATHER HOSE.........................3-14
CHECKING THE EXHAUST SYSTEM .....................................................3-14
CHECKING THE COOLANT LEVEL ........................................................3-16
CHECKING THE COOLING SYSTEM .....................................................3-17
CHANGING THE COOLANT ....................................................................3-17
CHASSIS ........................................................................................................3-19
ADJUSTING THE FRONT DISC BRAKE .................................................3-19
ADJUSTING THE REAR DISC BRAKE ...................................................3-19
CHECKING THE BRAKE FLUID LEVEL ..................................................3-20
CHECKING THE FRONT BRAKE PADS .................................................3-20
CHECKING THE REAR BRAKE PADS....................................................3-20
CHECKING THE FRONT BRAKE HOSE .................................................3-20
CHECKING THE REAR BRAKE HOSE ...................................................3-21
CHECKING THE BRAKE OPERATION ...................................................3-21
BLEEDING THE HYDRAULIC BRAKE SYSTEM.....................................3-21
DRIVE CHAIN SLACK ..............................................................................3-22
LUBRICATING THE DRIVE CHAIN .........................................................3-23
CHECKING AND ADJUSTING THE STEERING HEAD ..........................3-23
LUBRICATING THE STEERING HEAD ...................................................3-24
CHECKING THE FRONT FORK LEGS....................................................3-24
ADJUSTING THE FRONT FORK LEGS ..................................................3-25
CHECKING THE REAR SHOCK ABSORBER ASSEMBLY.....................3-26
ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY ...................3-26
CHECKING THE SWINGARM OPERATION ...........................................3-28
LUBRICATING THE SWINGARM PIVOT ................................................3-28
CHECKING THE TIRES ...........................................................................3-28
CHECKING AND TIGHTENING THE SPOKES .......................................3-29
CHECKING THE WHEELS ......................................................................3-29
CHECKING THE CHASSIS FASTENERS ...............................................3-29
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