2004-2006 Honda FourTrax Rancher TRX350TE/TM/FE/FM Service Manual, Page 273Get this manual
BRAKE SYSTEM FMFf models:
Remove the fol lowing: two rum bolts brake drum
SHOES AND DRUM INSPECTION
BRAKE SHOE Measure the li ning thick nessSERVICE UMIT: 1.0 mm 10.04 in )
BRAKE DRUM Measure he drum I.DSERVICE UMIT: 161.0 mm (6.34 in) For waterproof seal and brake panel inspect ion, see page 1511