Yamaha YZF-R125 Service Manual: Checking the friction plates

Yamaha YZF-R125 Service Manual / Engine / Clutch / Checking the friction plates

The following procedure applies to all of the friction plates.

1. Check:

  • Friction plate Damage/wear Replace the
    friction plates as a set.

2. Measure:

  • Friction plate thickness Out of specification Replace
    the friction plates as a set.

NOTE:

Measure the friction plate at four places.


Checking the friction plates


A. Friction plate 1

B. Friction plate 2

C. Friction plate 3 (Green)

a. Green paint

    Removing the clutch
    1. Straighten the lock washer tab. 2. Loosen: Clutch boss nut "1" NOTE: While holding the clutch boss "2" with the universal clutch holder "3", loosen the clutch boss nut. ...

    Checking the clutch plates
    The following procedure applies to all of the clutch plates. 1. Check: Clutch plate Damage Replace the clutch plates as a set. 2. Measure: Clutch plate warpage (with a surface p ...

    Other materials:

    Checking the drive sprocket
    1. Check: Drive sprocket More than 1/4 tooth "a" wear Replace the drive chain sprockets as a set. Bent teeth Replace the drive chain sprockets as a set. b. Correct 1. Drive chain roller 2. Drive chain sprocket Checking the rear wheel sprocket Refer to "CHECKING AND R ...

    Checking the piston rings
    1. Measure: Piston ring side clearance Out of specification Replace the piston and piston rings as a set. NOTE: Before measuring the piston ring side clearance, eliminate any carbon deposits from the piston ring grooves and piston rings. 2. Install: Piston ring (into the cylind ...

    Checking the primary driven gear
    1. Check: Primary driven gear "1" Damage/wear Replace the primary drive gear and clutch housing as a set. Excessive noise during operation  Replace the primary drive gear and clutch housing as a set. ...

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