2005-2011 Honda Recon TRX250TE/TM service manual, Page 133Get this manual
CYLINDER HEAD VALVE If the contact area is too hig on the valve, the seat must be lowered usi ng flat cunerTOOLS: Flat cutter, 30 mm
IN) 077800012200
Flat cutter33 mm
EX) 077800012900
CONTACT TOO LOW OLD SEAT
or equiva lent commercially available in U.S .AIf the contact area is too low on the valve, the seat must be raised using 60 in terior cutterTOOL:
Interior cutter, 30 mm
077800014000
or equivalent commercially available in U.S .AUsing 450 seat cutter, remove any roughness- -irregularities from the seatROUG HNESS
TOOLSSeat cutter, 29 mm (45 INSeat cutter, 33 mm (45" EXCutter holder, 5.5 mm (IN)