2004-2007 Honda Aquatrax ARX1200N3/T3/T3D Factory Service Manual, Page 316Get this manual
CYLINDER HEADVALVE REFACING Follow the refacing manufacturer's operating instructions
Valve seat cuttersgrinders or equivalent valve seat refacing equipment are recommended to correct worn valve seats45!
If the contact area is too high on the valve, the seat must be lowered using 32! flat cutterIf the contact area is too low on the valve, the seat must be raised using 60! interior cutter
CONTACT TOO HIGH
OLD SEAT WIDTH
32! CONTACT TOO LOW OLD SEAT WIDTH