1981-1984 Official Honda ATC250R Shop Manual, Page 132Get this manual
11 BRAKE MECHANISM(FRONT DISC BRAKE)
SERVICE INFORMATION TROUBLESHOOTING BRAKE FLUIDAIR BLEEDING BRAKE PADSDISC BRAKE CALIPER BRAKE MASTER CYLINDER
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SERVICE INFORMATION
GENERAL INSTRUCTIONS
The front brake pads can be replaced without disconnecting the brake hoseOnce the hydraulic system has been opened, or if the brake feels spongy, the system must be bledThe brake caliper should be disassembled before the master cylinder is disassembledDo not allow foreign material to enter the system when filling the reservoirAvoid spilling brake fluid on painted surfaces or instrument lenses, as severe damage will result
Special Snap Ring Pliers (Internal)