Periodic checks and adjustments
Adjusting the rear disc brake
In this manual: Periodic checks and adjustments
~1min read
1. Check:
- Brake pedal position (distance "a" from the center of the rider footrest to the center of the brake pedal) Out of specification
Adjust.

2. Adjust:
- Brake pedal position
a. Loosen the locknut "1".
b. Remove the cotter pin "2", washer "3", and pin "4".
c. Turn the adjusting nut "5" in direction "a" or "b" until the specified brake pedal position is obtained.

d. Tighten the locknut "1" to specification.
WARNING
A soft or spongy feeling in the brake pedal can indicate the presence of air in the brake system. Before the vehicle is operated, the air must be removed by bleeding the brake system. Air in the brake system will considerably reduce braking performance.
CAUTION:After adjusting the brake pedal position, make sure there is no brake drag.
e. Install the pin, washer, and cotter pin.
WARNING Always use a new cotter pin.
Test yourself
A quick Yamaha YZF-R125 quiz: every answer comes with an explanation and a link to the manual page.
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