Honda 2006 TRX680FA Service Manual page 420

REAR BRAKE DISC INSPECTION
Visually inspect t he disc for damage or cracks.
M easur e the brak e disc thick ness at seve ral po ints.
SERVICELIMIT: 6 mm 10.2 in ]
Replace the brake disc if t he smallest measurement
is less t han t he service lim it.
Check the b rake d isc tor w arpag e.
SERV ICE LIMIT: 0.5 mm (0.02 in]
Replace the bra ke di sc if the wa rpage exceeds t he
service limit.
FRONT MASTER CYLINDER
DISASSEMBLY
Drain the b rake flu id fro m the l ro nt brake hy drau lic
syste m l pag e 17-7).
Disconnect t he br ake hose by rem ov ing t he oil belt
and seali ng was he rs.
Drscon nec tthe
f ro nt brake
sw itch connectors.
Remov e the ma ster cylinder hold er bol ls, ho lder
and m as ter cy li nde r.
BRAKE SYSTEM
MA STER CYLINDER
17-13