DAELIM Daystar VL125E Service Manual page 131

Cylinder Head / Valve
Valve Seat Amendment
If the Seat part is damaged or rough, cut them
using 45 cutter.
CAUTION
!
After replacing the valve guide, cut the seat
part.
Amend the flat using a 35 cutter side by side.
Amend the inside using a 60 cutter side by
side.
Amend the seat part with a standard width
using a 45 cutter.
9-10
Damaged or Rough
Valve
Seat
45
Cut The Seat Part
35
Seat Width Before Cutting
60
0.7~0.9mm
(0.028~0.035 in)
45