1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 190Get this manual
HYDRAULIC DISC BRAKES Apply grease to the parking brake shaft, position the shaft so that the punch mark is within the index marks on the parking brake base and thread the shaft into the parking brake base{1PUNCH MARK
Parkinq brake shaft has left hand threads
Screw the parking brake shaft in fully, back it about 18 turn and make sure that the punch mark on the shaft is within the index marks on th baseInstall the boot over the shaft and base, making sure that the boot is seated in the groove in the shaft and base properly