Yamaha YZF-R125 Service Manual: Checking the front fork

1. Stand the vehicle on a level surface.

WARNING

Securely support the vehicle so that there is no danger of it falling over.

2. Check:

  • Inner tube Damage/scratches Replace.

  • Oil seal Oil leakage Replace.

3. Hold the vehicle upright and apply the front brake.

4. Check:

Front fork operation Push down hard on the handlebar several times and check if the front fork rebounds smoothly.

Rough movement Repair.


Refer to "FRONT FORK" on page 4-44.

Checking the front fork


    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 ...

    Checking the tires
    The following procedure applies to both of the tires. 1. Check: Tire pressure Out of specification Regulate. WARNING The tire pressure should only be checked and regulated whe ...

    Other materials:

    Intake air pressure sensor
    1. Check: Intake air pressure sensor output voltage Out of specification Replace the throttle body. a. Connect the pocket tester (DC 20 V) to the throttle body sensor assembly coupler as shown. Positive tester probe pink/white "1" Negative tester probe gray/black "2" ...

    Removing the valves
    The following procedure applies to all of the valves and related components. NOTE: Before removing the internal parts of the cylinder head (e.g., valves, valve springs, valve seats), make sure the valves properly seal. 1. Check: Valve sealing Leakage at the valve seat Check the valve ...

    Assembling the oil pump
    1. Lubricate: Oil pump inner rotor Oil pump outer rotor Oil pump driven gear (with the recommended lubricant) 2. Install: Oil pump outer rotor Oil pump inner rotor "1" Oil pump driven gear Pin "2" NOTE: When installing the inner rotor, align the pin "2" in the oil pump sh ...

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