2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 131Get this manual
CYLINDER HEADVALVE TOOLS Valve spring compressor 07757-0010000 Valve guide driver, 6.0 mm 07942-6570100 Valve guide reamer, 6.012 mm 07VMH-MBB0200
Valve seat cutter, 40 mm (IN 45 07780-0010500
Valve seat cutter, 33 mm (EX 45 07780-0010800
Flat cutter, 38.5 mm (IN 32 07780-0012400
or equivalent commercially available in U.S.AFlat cutter, 33 mm (EX 32 07780-0012900