2001-2003 Honda TRX500FA Factory Service Manual, Page 141Get this manual
CYLINDER HEADVALVE If he con tact area is oo high on th alve, he seat
m ust be low red usin 32" flat cutt rIf the contact area is too low on he alve, he seat must be raised using 60 in terior curter,
CONTACT TOO HIG H
Us ing 45" seat curte r, remov any roughness irregularities from the seat TOOLS :
Valve seal cutter, 35 mm (lNl Valve seat cutter33 mm IEXI Cutter holder5.5 mm
077800010400 07780-0010800 07781-0010101
or equivalent commercially available in U.S .A
Using 32" lat cu tterrem ov 14 of the existing valve