Yamaha YZF-R125 Service Manual: Checking the bearings and oil seal

Yamaha YZF-R125 Service Manual / Engine / Crankcase / Checking the bearings and oil seal

1. Check:

  • Bearings

Clean and lubricate the bearings, and then rotate the inner race with your finger.

Rough movement Replace.


  • Oil seal

Damage/wear Replace.


    Checking the timing chain and timing chain guide
    1. Check: Timing chain Damage/stiffness Replace the timing chain and camshaft sprocket as a set. 2. Check: Timing chain guide (intake side) Damage/wear Replace. Checking the oil stra ...

    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 ...

    Other materials:

    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 ...

    Shifting
    Shifting Shift pedal Neutral position Shifting gears lets you control the amount of engine power available for starting off, accelerating, climbing hills, etc. The gear positions are shown in the illustration. TIP To shift the transmission into the neutral position, press the ...

    Introduction
    Welcome to the Yamaha world of motorcycling! As the owner of the YZF-R125, you are benefiting from Yamaha's vast experience and newest technology regarding the design and manufacture of high-quality products, which have earned Yamaha a reputation for dependability. Please take the time to re ...

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