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:

    Changing the coolant
    1. Remove: Lower side cowlings Refer to "GENERAL CHASSIS" on page 4-1. 2. Remove: Radiator cap "1" WARNINGA hot radiator is under pressure. Therefore, do not remove the radiator cap when the engine is hot. Scalding hot fluid and steam may be blown out, which c ...

    Checking the condition of the bulbs
    The following procedure applies to all of the bulbs. 1. Remove: Bulb WARNINGSince the headlight bulbs get extremely hot, keep flammable products and your hands away from them until they have cooled down. CAUTION: Be sure to hold the socket firmly when re ...

    Checking the camshaft
    1. Check: Camshaft lobes Blue discoloration/pitting/scratches  Replace the camshaft. 2. Measure: Camshaft lobe dimensions "a" and "b" Out of specification Replace the camshaft. 3. Check: Camshaft oil passage Obstruction Blow out with compressed air. ...

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