Yamaha YZF-R125 Service Manual: Separating the crankcase

Yamaha YZF-R125 Service Manual / Engine / Crankcase / Separating the crankcase

1. Remove:

  • Crankcase bolts

NOTE:

Loosen each bolt 1/4 of a turn at a time, in stages and in the proper sequence as shown.

Separating the crankcase


A. Right crankcase

B. Left crankcase

2. Turn:

  • Shift drum segment

NOTE:

Turn the shift drum segment "1" to the position shown in the illustration. In this position, the shift drum segment teeth will not contact the crankcase during crankcase separation.

Separating the crankcase


3. Remove:

  • Right crankcase
CAUTION:

Tap on one side of the crankcase with a softface hammer. Tap only on reinforced portions of the crankcase, not on the crankcase mating surfaces. Work slowly and carefully and make sure the crankcase halves separate evenly.

    Crankcase
    ...

    Checking the crankcase
    1. Thoroughly wash the crankcase halves in a mild solvent. 2. Thoroughly clean all the gasket surfaces and crankcase mating surfaces. 3. Check: Crankcase Cracks/damage Replace. Oil de ...

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    1. Set the main switch to "OFF" and the engine stop switch to " ". 2. Disconnect the self-diagnosis signal connector "1", and then connect the FI diagnostic tool "2" as shown. 3. Disconnect the fuel pump coupler. 4. While pressing the "MODE" button, set the main switch to "ON". NOTE: ...

    Parking
    When parking, stop the engine, and then remove the key from the main switch. WARNING Since the engine and exhaust system can become very hot, park in a place where pedestrians or children are not likely to touch them and be burned. Do not park on a slope or on soft ground, ...

    Checking the drive chain
    1. Measure: 15-link section "a" of the drive chain Out of specification Replace the drive chain. a. Measure the length "a" between the inner sides of the pins and the length "b" between the outer sides of the pins on a 15-link section of the drive chain as shown in the illustration. ...

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