Honda CRF250F Owner's Manual Installation And Operation page 203

BRAKE PAD WEAR
Refer to the Safety Precautions on page 43.
Brake pad wear depends upon the severity
of usage, the type of riding, and road
conditions. (Generally, the pads will wear
faster on wet and dirty roads.)
Inspect the pads at each regular
maintenance interval (page 46).
Check the cutout (1) in each pad.
If either pad is worn to the cutout, replace
both pads as a set. See your dealer for this
service.
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<FRONT BRAKE>
<REAR BRAKE>
(1)
(1) Cutouts
(1)