2006 Honda TRX680 Rincon Factory Service Manual, Page 413Get this manual
BRAKE SYSTEM
TROUBLESHOOTING
FRONT DISC BRAKE
Brake lever soft or spongy Air in hydraulic system Leaking hydraulic system Contaminated brake paddisc Worn caliper piston seal Worn master cylinder piston cups Worn brake paddisc Contaminated caliper Contaminated master cylinder Caliper not sliding properly Low brake fluid level Clogged fluid passage Warpeddeformed brake disc Stickingworn caliper piston Stickingworn master cylinder piston Bent brake lever Brake lever hard Cloggedrestricted brake system Stickingworn caliper piston Stickingworn master cylinder piston Caliper not sliding properly Bent brake lever Brake drags Contaminated brake paddisc Badly worn brake paddisc Warpeddeformed brake disc Caliper not sliding properly Cloggedrestricted fluid passage Sticking caliper piston