Table des Matières
Publicité
POWR
CAMSHAFT AND VALVES
Å
ı
All manuals and user guides at all-guides.com
Valve seat refacing
NOTE:
After refacing the valve seat or replacing
the valve and valve guide, lap the valve seat
and valve face.
To prevent chatter marks, turn the valve
seat cutter while applying an even, down-
ward pressure (4 ~ 5 kg).
Valve seat cutting guidelines
Å The valve seat is centered on the valve face,
ı The valve seat is in the middle of the valve
5-28
CAUTION:
Valve seat cutter set:
90890-06803
Refer to the following chart to deter-
mine the appropriate valve seat cut-
ter.
Valve seat area
A
B
C
but is too wide.
Valve seat cutter set
First:
Use
90˚ cutter
To reduce the
lightly
Second:
valve seat width.
30˚ cutter
face, but is too narrow.
Valve seat cutter set
To achieve a
Use
45˚ cutter
uniform valve seat
width.
E
Valve seat cutter
90˚
45˚
30˚
Desired result
Desired result
Publicité
Table des Matières
