Yamaha YZFR6X(C) 2008 Service Manual page 234

5. To secure the valve cotters onto the valve
stem, lightly tap the valve tip with a soft-
face hammer.
ECA13800
CAUTION:
Hitting the valve tip with excessive force
could damage the valve.
6. Lubricate:
• Valve lifter
(with the recommended lubricant)
Recommended lubricant
Engine oil
7. Install:
• Valve pad
• Valve lifter
NOTE:
• The valve lifter must move smoothly when
rotated with a finger.
• Each valve lifter and valve pad must be rein-
stalled in its original position.
VALVES AND VALVE SPRINGS
5-25