Honda XL200 2001 Shop Manual page 85

CYLINDER HEAD/VALVES
Using 60 degree cutter, remove the bottom 1/4 of the oil seat.
Remove the cutter and inspect the area you have just removed.
Install a 45 degree finish cutter and cut the seat to proper width.
Make sure that all pitting and irregularities are removed.
Refinish if necessary.
STANDARD SEAT WIDTH: 1.1 - 1.3 mm (0.04-0.05 in)
Apply thin coat of Prussian Blue to the valve seat.
Press the valve through the valve guide and onto the seat to
make a clear pattern.
NOTE
• The location of the valve seat in relation to the valve face is
very important for good sealing.
If the contact area is too high on the valve, the seat must be
lowered using a 32 degree flat cutter.
If the contact area is too low on the valve, the seat must be
raised using a 60 degree inner cutter.
6 -1 2
XL2 0 0