Yamaha YZF-R125 Service Manual: Checking the clutch boss

Yamaha YZF-R125 Service Manual / Engine / Clutch / Checking the clutch boss

1. Check:

Clutch boss splines Damage/pitting/wear Replace the
clutch boss.

NOTE:

Pitting on the clutch boss splines will cause erratic clutch operation.

Checking the clutch boss


Checking the pressure plate

1. Check:

Pressure plate Cracks/damage Replace.


Checking the clutch push lever and short clutch push rod

1. Check:

  • Clutch push lever
  • Short clutch push rod Damage/wear Replace the
    defective part(s).
    Checking the clutch housing
    1. Check: Clutch housing dogs "1" Damage/pitting/wear  Deburr the clutch housing dogs or replace the clutch housing. NOTE: Pitting on the clutch housing dogs will cause erratic cl ...

    Checking the primary drive gear
    1. Remove: Primary drive gear Refer to "BALANCER GEAR" on page 5-53. 2. Check: Primary drive gear Damage/wear  Replace the primary drive gear and clutch housing as a set. ...

    Other materials:

    Removing the piston
    1. Remove: Piston pin clips "1" Piston pin "2" Piston "3" CAUTION:Do not use a hammer to drive the piston pin out. NOTE: Before removing the piston pin clip, cover the crankcase opening with a clean rag to prevent the piston pin clip from falling in ...

    Rider seat
    To remove the rider seat Insert the key into the seat lock, and then turn it clockwise. Seat lock Open. Pull the rider seat off. To install the rider seat 1. Insert the projection on the front of the rider seat into the seat holder as shown. Projection ...

    Checking and lubricating the sidestand
    Checking and lubricating the sidestand The operation of the sidestand should be checked before each ride, and the sidestand pivot and metal-to-metal contact surfaces should be lubricated if necessary. WARNING If the sidestand does not move up and down smoothly, have a Yamaha deal ...

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