Yamaha XTZ 125K Owner's Manual page 66

ADVERTENCIA
WARNING:
After adjusting the pedal height adjust brake pedal free
play.
2. Freeplay.
The rear brake pedal free play should be adjusted to
20 ~ 30 mm (0.8 ~ 1.2 in) at the brake pedal end. Turn
the adjuster on the brake rod clockwise to reduce play
or counterclockwise to increase play.
WARNING:
ADVERTENCIA
Brake pedal free play should be checked whenever the
chain is adjusted or the rear wheel is removed and then
reinstalled.
If it is impossible to make proper adjustment, consult
a Yamaha dealer.
Check the operation of the brake light after adjusting
the rear brake.
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