Yamaha YZF-R125 Service Manual: Replacing the front brake pads

Yamaha YZF-R125 Service Manual / Chassis / Front brake / Replacing the front brake pads

NOTE:

When replacing the brake pads, it is not necessary to disconnect the brake hose or disassemble the brake caliper.

1. Measure:

  • Brake pad wear limit "a" Out of specification Replace
    the brake pads as a set.


2. Install:

  • Brake pad support

  • Brake pad spring

  • Brake pads

NOTE:

Always install new brake pads, a new brake pad spring and a new brake pad support as a set.

a. Connect a clear plastic hose "1" tightly to the bleed screw "2". Put the other end of the hose into an open container.

Replacing the front brake pads


b. Loosen the bleed screw and push the brake caliper pistons into the brake caliper with your fingers.

c. Tighten the bleed screw.


d. Install new brake pad support, a new brake pad spring and new brake pads.

NOTE:

The arrow mark "a" on the brake pad spring must point in the direction of disc rotation.

Replacing the front brake pads


3. Install:

  • Brake pad pin
  • Brake pad clips
  • Front brake caliper

4. Check:

  • Brake fluid level Below the minimum level mark "a" → Add the recommended brake fluid to the proper level.

    Refer to "CHECKING THE BRAKE FLUID LEVEL" on page 3-18.

Replacing the front brake pads


5. Check:

  • Brake lever operation Soft or spongy feeling Bleed
    the brake system.

    Refer to "BLEEDING THE HYDRAULIC BRAKE SYSTEM" on page 3-20.

    Checking the front brake disc
    1. Remove: Front wheel Refer to "FRONT WHEEL" on page 4-6. 2. Check: Brake disc Damage/galling Replace. 3. Measure: Brake disc deflection Out of specification Correct the b ...

    Removing the front brake caliper
    NOTE: Before disassembling the brake caliper, drain the brake fluid from the entire brake system. 1. Remove: Brake hose union bolt "1" Copper washers "2" Brake hose "3" NOTE: Put the en ...

    Other materials:

    Checking the steering
    Worn or loose steering bearings may cause danger. Therefore, the operation of the steering must be checked as follows at the intervals specified in the periodic maintenance and lubrication chart. Place a stand under the engine to raise the front wheel off the ground. WARNING! To ...

    Cast wheels
    To maximize the performance, durability, and safe operation of your vehicle, note the following points regarding the specified wheels. The wheel rims should be checked for cracks, bends or warpage before each ride. If any damage is found, have a Yamaha dealer replace the wheel. ...

    Installing the front brake master cylinder
    1. Install: Brake master cylinder "1" Brake master cylinder holder "2" NOTE: Install the brake master cylinder holder with the arrow mark "a" pointing forward. Align the end of the brake master cylinder holder with the punch mark "b" on the handlebar. First, tighten the front bo ...

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