Yamaha XT660R Service Manual page 270

VALVES AND VALVE SPRINGS
4. Install:
NOTE:
_
Install the valve cotters by compressing the
valve spring with the valve spring compressor
1 and the valve spring compressor attach-
ment 2.
5. To secure the valve cotters onto the valve
_
Hitting the valve tip with excessive force
can damage the valve.
5 - 31
• valve cotters
Valve spring compressor
98090-04019
Valve spring compressor attach-
ment
90890-01243
stem, lightly tap the valve tip with a soft-face
hammer.
CAUTION:
ENG