Valve Seat Inspection/Refacing - Honda XL200 2001 Shop Manual

CYLINDER HEAD/VALVES
After driving in the valve guide, ream it with a valve guide
reamer.
NOTE
• Use cutting oil on the reamer during this operation.
• Always rotate the reamer clockwise, never
counterclockwise.
Clean the cylinder head thoroughly to remove any metal particles.
Reface the valve seat.

VALVE SEAT INSPECTION/REFACING

VALVE SEAT INSPECTION
Clean the intake and exhaust valves thoroughly to remove the
carbon deposits.
Apply light coating if Prussian Blue to the valve seats.
Lap the valves and seats using a rubber hose or other hand
lapping tool.
Remove the tool and inspect the width of each valve seat.
STANDARD: 1.1 - 1.3mm (0.04 - 0.05 in)
SERVICE LIMIT: 1.5 mm (0.06 in)
If the valve seat is too wide, too narrow or has low spots, the seat
must be ground.
h
• The valve cannot be ground. If a valve face is burned or
badly worn or it contact the seat unevenly, replace the valve.
6 -1 0
XL2 0 0
VALVE GUIDE REAMER
(1) SEAT WIDTH