Yamaha 2009 XP500Y TMAX Service Manual page 214

5. To secure the valve cotters onto the valve
stem, lightly tap the valve tip with a soft-face
hammer.
ECA13800
NOTICE
Hitting the valve tip with excessive force
could damage the valve.
6. Lubricate:
• Valve pad
(with the recommended lubricant)
Recommended lubricant
Molybdenum disulfide oil
7. Lubricate:
• Valve lifter
(with the recommended lubricant)
Recommended lubricant
Engine oil
8. Install:
• Valve pad
• Valve lifter
ECA4B51016
NOTICE
After making sure that the valve pads are ful-
ly inserted, install the valve lifter taking care
so that the pads do not fall.
TIP
• The valve lifter must move smoothly when ro-
tated with a finger.
• Each valve lifter and valve pad must be rein-
stalled in its original position.
VALVES AND VALVE SPRINGS
5-25