Yamaha YZF-R125 Owners Manual: Front wheel

To remove the front wheel

WARNING
To avoid injury, securely support the vehicle so there is no danger of it falling over.

  1. Loosen the front wheel axle pinch bolt, then the wheel axle and the brake caliper bolts.


  1. Front wheel axle pinch bolt

  1. Lift the front wheel off the ground according to the procedure.
  2. Remove the speed sensor lead holder by removing the bolt.


  1. Speed sensor cable holder

  1. Remove the brake hose holder by removing the bolt.
  2. Remove the brake caliper by removing the bolts.


  1. Brake hose holder

  2. Brake caliper bolt

  3. Brake caliper

  4. Axle bolt

  1. Pull the wheel axle out, remove the speed sensor by pulling it out, and then remove the wheel. NOTICE: Do not apply the brake after the brake calipers have been removed, otherwise the brake pads will be forced shut.


  1. Speedometer gear unit

To install the front wheel

  1. Lift the wheel up between the fork legs.
  2. Install the speed sensor at the wheel hub.

TIP
Make sure that the projections on the speed sensor rotor are aligned with the notches in the wheel hub and that the slot in the speed sensor fits over the retainer on the fork leg.

  1. Insert the wheel axle.
  2. Lower the front wheel so that it is on the ground.
  3. Push down hard on the handlebar several times to check for proper fork operation.
  4. Install the brake caliper by installing the bolts.

TIP
Make sure that there is enough space between the brake pads before installing the brake caliper onto the brake disc.

  1. Install the brake hose holder by installing the bolt.
  2. Install the speed sensor lead holder by installing the bolt.
  3. Tighten the wheel axle, front wheel axle pinch bolt and brake caliper bolts to the specified torques.
Tightening torques:

Wheel axle:

59 Nm (5.9 m.kgf, 43 ft.lbf)

Front wheel axle pinch bolt:

14 Nm (1.4 m.kgf, 10 ft.lbf)

Brake caliper bolt:

30 Nm (3.0 m.kgf, 22 ft.lbf)

    Supporting the motorcycle
    Since this model is not equipped with a centerstand, follow these precautions when removing the front and rear wheel or performing other maintenance requiring the motorcycle to stand upright. ...

    Rear wheel
    To remove the rear wheel WARNING To avoid injury, securely support the vehicle so there is no danger of it falling over. Loosen the axle nut. Axle nut Drive chain slack adjust ...

    Other materials:

    Checking the transmission
    1. Measure: Main axle runout (with a centering device and dial gauge "1") Out of specification Replace the main axle. 2. Measure: Drive axle runout (with a centering device and dial gauge "1") Out of specification Replace the drive axle. 3. Check: Transmiss ...

    Checking the valve seats
    The following procedure applies to all of the valves and valve seats. 1. Eliminate: Carbon deposits (from the valve face and valve seat) 2. Check: Valve seat Pitting/wear Replace the cylinder head. 3. Measure: Valve seat width C "a" Out of specification Replace the ...

    Checking and replacing the rear wheel sprocket
    1. Check: Rear wheel sprocket More than 1/4 tooth "a" wear Replace the rear wheel sprocket. Bent teeth Replace the rear wheel sprocket. b. Correct 1. Drive chain roller 2. Rear wheel sprocket 2. Replace: Rear wheel sprocket a. Remove the self-locking nuts and the ...

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