Yamaha XT660R Service Manual page 269

VALVES AND VALVE SPRINGS
EAS00245
INSTALLING THE VALVES
The following procedure applies to all of the
valves and related components.
1. Deburr:
2. Lubricate:
3. Install:
NOTE:
_
• Install the valve spring with the larger pitch
• Install the valve spring with its painted end
b Smaller pitch
5 - 30
• valve stem end
(with an oil stone)
• valve stem 1
• valve stem seal 2
(with the recommended lubricant)
Recommended lubricant
Molybdenum disulfide oil
• valve 1
• valve spring seat 2
• valve stem seal 3
• valve spring 4
• valve spring retainer 5
(into the cylinder head)
a facing up.
facing up.
ENG