Honda CRF125F 2022 Owner's Manual page 37

Adjust by turning the rear brake adjusting nut a
half-turn at a time. Make sure the cut-out on
the adjusting nut is seated on the brake arm pin
(5) after making final freeplay adjustment.
4. Apply the brake several times and check for
free wheel rotation after the brake pedal is
released.
If proper adjustment cannot be obtained by this
method, see your dealer.
After adjustment, push the brake arm (6) to
confirm that there is a gap between the rear
brake adjusting nut and the brake arm pin.
(4)
(4) Rear brake adjusting nut
(5) Brake arm pin
After adjustment, confirm the freeplay of the
rear brake pedal.
Other Checks:
Make sure the brake rod, brake arm, spring and
fasteners are in good condition.
(5)
(6)
(6)Brake arm
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