Removing The Valves - Orion AGB-21G Service Manual

CAMSHAFT /VALVES AND VALVE SPRINGS
4 - 20

REMOVING THE VALVES

The following procedure applies to all of the
valves and related components.
NOTE:
Before removing the internal parts of the cylin-
der head (e.g., valves, valve springs, valve
seats), make sure that the valves properly seal.
1. Check:
valve sealing
Leakage at the valve seat
face, valve seat, and valve seat width.
Refer to "CHECKING THE VALVE SEATS".
a. Pour a clean solvent a into the intake and
exhaust ports.
b. Check that the valves properly seal.
There should be no leakage at the valve seat
1 .
2. Remove:
valve cotters 1
NOTE:
Remove the valve cotters by compressing the
valve springs with the valve spring compressor
2 and attachment 3 .
3. Remove:
upper spring seat 1
valve springs 2
oil seal 3
valve
4
NOTE:
Identify the position of each part very carefully
so that it can be reinstalled in its original place.
Check the valve