1981-1984 Official Honda ATC250R Shop Manual, Page 141Get this manual

BRAKE MECHANISM (FRONT DISC BRAKE) Remove the reservoir from the master cylinderClean the master cylinder and reservoir in clean brake fluid

DIAPHRAGM

SNAP RING

"MASTER PISTON

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives