2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 165Get this manual
CYLINDER HEADIVALVE Using interior culter, remove 14 of the existing valve seat materiaL
Interior cutter, 37.5 mm (60 IN) 077800014100 Interior cutter, 34 mm (60 EX) 077800014700
Cutter holder, 6.0 mm
07VMHMBB0100
OLD SEAT WIDTH