46
125
-
160 cc
C
WORKSHOP MANUAL
CYLINDER HEAD, VALVES, CYLINDER, PISTON
Use a 45° stone to grind contact area to required depth.
Check valve seating area again.
If contact area is wider, grind first with a 32° stone and then bring it to the
required size with a 45° stone.
If contact area is narrower, grind first with a 60° stone and then bring it to
the required size with a 45° stone.
A
High seating line
B
Low seating line
C
Original contact area
A
B
C
C
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