Periodic Checks And Adjustments - Yamaha WR450F Owner's Service Manual

PERIODIC CHECKS AND ADJUSTMENTS

PERIODIC MAINTENANCE .............................................................................3-1
INTRODUCTION ........................................................................................3-1
PERIODIC MAINTENANCE CHART FOR THE EMISSION
CONTROL SYSTEM .................................................................................3-1
GENERAL MAINTENANCE AND LUBRICATION CHART ........................3-2
MAINTENANCE INTERVALS FOR COMPETITION USE .........................3-4
PRE-OPERATION INSPECTION AND MAINTENANCE.................................3-9
GENERAL INSPECTION AND MAINTENANCE........................................3-9
ENGINE ..........................................................................................................3-10
CHECKING THE COOLANT LEVEL........................................................3-10
CHECKING THE COOLING SYSTEM .....................................................3-10
CHANGING THE COOLANT....................................................................3-10
CHECKING THE RADIATOR CAP ..........................................................3-11
CHECKING THE RADIATOR CAP VALVE OPENING PRESSURE .......3-11
CHECKING THE COOLANT CIRCULATORY SYSTEM FOR LEAKS ....3-12
ADJUSTING THE CLUTCH LEVER FREE PLAY....................................3-12
ADJUSTING THE THROTTLE GRIP FREE PLAY ..................................3-13
LUBRICATING THE THROTTLE CABLE ................................................3-14
CLEANING THE AIR FILTER ELEMENT.................................................3-14
CHECKING THE THROTTLE BODY JOINT............................................3-15
CHECKING THE BREATHER HOSES ....................................................3-15
CHECKING THE EXHAUST SYSTEM.....................................................3-15
CHECKING THE FUEL LINE ...................................................................3-16
CHECKING THE ENGINE OIL LEVEL.....................................................3-16
CHANGING THE ENGINE OIL ................................................................3-17
ADJUSTING THE ENGINE IDLING SPEED ............................................3-19
ADJUSTING THE VALVE CLEARANCE .................................................3-20
CLEANING THE SPARK ARRESTER .....................................................3-24
CHASSIS ........................................................................................................3-25
BLEEDING THE BRAKE SYSTEM ..........................................................3-25
CHECKING THE BRAKE HOSE ..............................................................3-26
ADJUSTING THE FRONT BRAKE ..........................................................3-26
ADJUSTING THE REAR BRAKE.............................................................3-27
CHECKING THE FRONT BRAKE PADS .................................................3-27
CHECKING THE REAR BRAKE PADS ...................................................3-29
CHECKING THE REAR BRAKE PAD INSULATOR ................................3-30
CHECKING THE BRAKE FLUID LEVEL..................................................3-30
ADJUSTING THE DRIVE CHAIN SLACK ................................................3-31
CHECKING THE FRONT FORK LEGS ...................................................3-31
CHECKING THE FRONT FORK PROTECTOR GUIDE ..........................3-32
CLEANING THE FRONT FORK OIL SEAL AND DUST SEAL ................3-32
AIR BLEEDING FROM FRONT FORK ....................................................3-32
ADJUSTING THE FRONT FORK LEGS ..................................................3-33
CHECKING THE SWINGARM OPERATION ...........................................3-34
CHECKING THE REAR SUSPENSION...................................................3-34
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