Yamaha YZF-R125 Service Manual: Assembling the crankcase

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

1. Thoroughly clean all the gasket mating surfaces and crankcase mating surfaces.

2. Apply:

  • Sealant (onto the crankcase mating surfaces)

NOTE:

Do not allow any sealant to come into contact with the oil gallery.

Assembling the crankcase


3. Install:

  • Right crankcase

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 installation.

Assembling the crankcase


4. Install:

  • Crankcase bolts

NOTE:

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

  • M6 × 70 mm : "7-9", "11"
  • M6 × 55 mm : "14", "15"
  • M6 × 45 mm : "1-5", "10"

Assembling the crankcase


A. Left crankcase

B. Right crankcase

    Installing the bearing retainer
    1. Install: Bearing retainer "1" NOTE: Install the bearing retainer "1" with its "OUT" mark "a" facing outward. Apply locking agent (LOCTITE) to the threads of the bearing retainer bo ...

    Crankshaft
    ...

    Other materials:

    Checking the diode
    1. Check: Diode Out of specification Replace. NOTE: The pocket tester or the analog pocket tester readings are shown in the following table. a. Disconnect the diode from the wire harness. b. Connect the pocket tester ( × 1) to the diode terminals as shown. c. Check the diod ...

    Checking and adjusting the steering head
    1. Stand the vehicle on a level surface WARNINGSecurely support the vehicle so that there is no danger of it falling over. NOTE: Place the vehicle on a suitable stand so that the front wheel is elevated. 2. Check: Steering head Grasp the bottom of the front fork legs an ...

    Checking the steering head
    1. Wash: Bearings Bearing races 2. Check: Bearings Bearing races Damage/pitting →Replace. 3. Replace: Bearings Bearing races a. Remove the bearing races from the steering head pipe with a long rod "1" and hammer. b. Remove the bearing race from the lower bracket ...

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