2003 Honda ATV TRX650FA Rincon Factory Service Manual, Page 318Get this manual
BRAKE SYSTEM Chec the bra ke disc wa rpage
SERVICE LIMIT: 0.5 mm (0.02 in )
Replace the brake isc if the wa rpage exceeds th serv ice lim it
FRONT BRAKE MASTER CYLINDER
DISASSEMBLY
Dr ain th brake fluid from the front brake hyd raul ic sy stem (pag 16-6)Disconn ect he brake li ht itch co nnect ors and rake switc conn ect or sDisco nnect th br ake hose fr th master cy linde by rem oving he oil bo lt and seali ng was he rs