SANYANG INDUSTRY CO. XS125-K Service Manual page 47

5. CYLINDER HEAD/ VALVE
Using a 32 degree cutter, remove 1/4 of the existing
valve seat material.
Remove the bottom 1/4 of the old seat by using a 60
degree cutter.
Finish the seat to the proper width by using a 45
degree cutter.
o
32 CUTTER
VALVE SEAT
o
60 CUTTER
o
45 CUTTER
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