Yamaha 2004 YP400 Service Manual page 242

2
3
1
2
VALVES AND VALVE SPRINGS
NOTE:
_
Install the valve spring with the larger pitch a
facing up.
b Smaller pitch
4. Install:
NOTE:
_
Install the valve cotters by compressing the
valve spring with the valve spring compressor
2 and the valve spring compressor attach-
ment 3.
5. To secure the valve cotters onto the valve
_
Hitting the valve tip with excessive force
could damage the valve.
6. Install:
NOTE:
_
• Lubricate the valve lifter and valve pad with
• The valve lifter must move smoothly when
• Each valve lifter and valve pad must be rein-
1
5 - 29
• valve cotters 1
Valve spring compressor
90890-04019, YM-04019
Valve spring compressor attach-
ment
90890-01243, YM-01253-1
stem, lightly tap the valve tip with a soft-face
hammer.
CAUTION:
• valve pad 1
• valve lifter 2
molybdenum disulfide oil.
rotated with a finger.
stalled in its original position.
ENG