1981-1984 Official Honda ATC250R Shop Manual, Page 192Get this manual
'82 ATC250R ADDENDUM REAR BRAKE BRAKE PEDAL FREE PLAY Measure the brake pedal free play
ATC 2S0R
FREE PLAY: 5-15 mm (316-58 in)
BRAKE FLUID INSPECTION
Check that the brake fluid reservoir is filled to the upper level markIf the level is lower than the upper level mark, fill the reservoir with DOT-3 BRAKE FLUID up to the level markCheck the entire system for leaks if the level is lowCAUTION:
UPPER LEVEL MARK