CF MOTO CF125T-19 2003, Service Manual

Page: 124 / 241

8-17
8 Cylinder cover Cylinder head Cylinder body valving system
8
Check again the valve-seat face.
In case the valve-seat face is higher, grinds and pares
with 32
o
。
milling
cutter first, and then correct to the specified width
with 45
o
。
milling cutter.
In case the valve-seat face is lower, grinds and pares
with 60
o
。
milling cutter, and then correct to the specified width
with 45
o
。
milling cutter.
After correction, apply grinding paste evenly on the
valve seat and use a hammer to adjust the valve.
Note
• Slightly strike the hammer while adjusting. Do
not over press or turn to avoid damage to the
valve seat.
· Turn the valve slightly while adjusting. Do not
adjust at the same position to avoid deflected
wear.
• Keep the grinding paste from entering into the
clearance between valve guide and stem.
After adjusting, clean up cylinder head and valve.
After correction, check again the contact of the valve
seat.
Assembly of cylinder head