1995-2000 Honda FourTrax 300 300FW TRX300 TRX300FW TRX service manual., Page 216Get this manual
BRAKES DISASSEMBLY (TRX300FW)
I'Iemove the 1oIDw1ng
SERVICE LIMIT: III "'''' (1.3 III)
RemoYthe 1oIowing'
For IronI br
r.ub .1Id O-ring by rfIfI'IOYing the r.ub bolts