DAELIM NS125DLX Service Manual page 94

Cylinder Head/Valve
● Use a 55 ◦
cutter to make minor repairs on the
inside.
● Use a 45 ◦
cutter to make adjustment within the
level of prescribed width.
● Apply a light coating of prussian blue to the
valve seat. Gently strike the valve with a valve
guide reamer to check the status of contact,
without turning the valve.
● If the contact surface is too high, grind the
◦
surface with a 37
prescribed width with a 45
● If the contact surface is too low, grind the surface
◦
with a 55 cutter, and finish to the prescribed
◦
width with a 45 cutter.
9-10
cutter, and finish to the
◦
cutter.
Too high
Too low
○
55
Seat width
○
45
○
37
○
55