2004-2006 Honda FourTrax Rancher TRX350TE/TM/FE/FM Service Manual, Page 282Get this manual
BRAKE SYSTEM O-ring brake drum
INSPECTION
M easure th rake dru IDSERVICE UMIT: 161.0 mm (6.34 in )
Check the dust seals in the wheel hu and drum cove fo wea dam age
DUST SEA LS