Yamaha YZ125X 2023, Owner'S Manual

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PERIODIC CHECKS AND ADJUSTMENTS
MAINTENANCE INTERVALS
...........................................................................3-1
MAINTENANCE INTERVALS ....................................................................3-1
PRE-OPERATION INSPECTION AND MAINTENANCE
.................................3-4
GENERAL INSPECTION AND MAINTENANCE........................................3-4
ENGINE
............................................................................................................3-5
ADJUSTING THE PILOT AIR SCREW ......................................................3-5
CHECKING THE ENGINE IDLING SPEED ...............................................3-5
CHECKING THE THROTTLE GRIP...........................................................3-5
CHECKING THE SPARK PLUG ................................................................3-5
CHECKING THE TRANSMISSION OIL LEVEL .........................................3-6
CHANGING THE TRANSMISSION OIL.....................................................3-6
ADJUSTING THE CLUTCH LEVER FREE PLAY......................................3-7
ADJUSTING THE CLUTCH LEVER POSITION ........................................3-8
CLEANING THE AIR FILTER ELEMENT...................................................3-8
CHECKING THE CARBURETOR JOINT...................................................3-9
CHECKING THE CARBURETOR HOSES.................................................3-9
CHECKING THE EXHAUST SYSTEM.....................................................3-10
CHECKING THE COOLANT LEVEL........................................................3-10
CHECKING THE COOLING SYSTEM .....................................................3-11
CHANGING THE COOLANT....................................................................3-11
CHASSIS
........................................................................................................3-13
ADJUSTING THE FRONT DISC BRAKE.................................................3-13
ADJUSTING THE REAR DISC BRAKE ...................................................3-13
CHECKING THE BRAKE FLUID LEVEL..................................................3-14
CHECKING THE FRONT BRAKE PADS .................................................3-14
CHECKING THE REAR BRAKE PADS ...................................................3-14
CHECKING THE FRONT BRAKE HOSE.................................................3-14
CHECKING THE REAR BRAKE HOSE ...................................................3-15
CHECKING THE BRAKE OPERATION ...................................................3-15
BLEEDING THE HYDRAULIC BRAKE SYSTEM ....................................3-15
DRIVE CHAIN SLACK..............................................................................3-16
LUBRICATING THE DRIVE CHAIN .........................................................3-17
CHECKING AND ADJUSTING THE STEERING HEAD ..........................3-17
LUBRICATING THE STEERING HEAD...................................................3-18
CHECKING THE FRONT FORK LEGS ...................................................3-18
ADJUSTING THE FRONT FORK LEGS ..................................................3-19
CHECKING THE REAR SHOCK ABSORBER ASSEMBLY ....................3-20
ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY...................3-20
CHECKING THE SWINGARM OPERATION ...........................................3-22
LUBRICATING THE SWINGARM PIVOT ................................................3-22
CHECKING THE TIRES...........................................................................3-22
CHECKING AND TIGHTENING THE SPOKES.......................................3-23
CHECKING THE WHEELS ......................................................................3-23
CHECKING THE CHASSIS FASTENERS ...............................................3-23
CHECKING AND LUBRICATING THE CABLES .....................................3-23