Removing The Valves - Yamaha XP500 Service Manual

VALVES AND VALVE SPRINGS
EAS00237

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. Remove:
NOTE:
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:
M
a. Pour a clean solvent a into the intake and
b. Check that the valves properly seal.
NOTE:
There should be no leakage at the valve seat
1.
L
3. Remove:
NOTE:
Remove the valve cotters by compressing the
valve spring with the valve spring compressor
2 and valve spring compressor attachment
3.
5 - 21
• valve lifter 1
• valve pad 2
• valve sealing
Leakage at the valve seat → Check the
valve face, valve seat, and valve seat width.
Refer to "CHECKING THE VALVE SEATS".
MMM M MMM M M MMM M M MMM
exhaust ports.
LLL L LLL L L LLL L L LLL
• valve cotters 1
Valve spring compressor
90890-04019, YM-04019
Valve spring compressor attach-
ment
90890-04114, YM-04114
ENG
M M MMM M M MMM M
L L LLL L L LLL L
MMM
LLL