Yamaha YZF-R6RC Automobile User Manual


 
5-23
VALVES AND VALVE SPRINGS
ENG
NOTE:
NOTE:
NOTE:
NOTE:
EAS00238
REMOVING THE VALVES
The following procedure applies to all of the
valves and related components.
Before removing the internal parts of the cylin-
der head (e.g., valves, valve springs, valve
seats), make sure the valves properly seal.
1. Remove:
Svalve lifter
1
Svalve pad
2
Make a note of the position of each valve lifter
and valve pad so that they can be reinstalled in
their original place.
2. Check:
Svalve sealing
Leakage at the valve seat ! Check the valve
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
.
3. Remove:
Svalve cotters
1
Remove the valve cotters by compressing the
valve springs with the valve spring compressor
2
and the valve spring compressor attachment
3
.