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7. Cylinder Head / Valve
7-12
Rotate the valve seat cutter clockwise and
counterclockwise with 4 to 5 kg pressure in
order to fix the uneven part.
Caution
z Apply motor oil to the contact face while
grinding it.
Use the 45 degree valve seat cutter to remove
any roughness on the valve seat.
Caution
z Use the 45 degree valve seat cutter to
grind the seat after changing the valve
guide.
4~5kg
45°
Use the 32 degree cutter to remove the upper
1/4 part of the valve seat.
Old valve seat
width
32°
Use the 60 degree cutter to remove the
bottom 1/4 part of the seat and check the new
valve seat.
Old valve seat
width
60°
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