Yamaha YZF-R1 Series Service Manual page 326

1
b. Smaller pitch
4. Install:
• Valve cotters
TIP
Install the valve cotters by compressing the
valve spring with the valve spring compressor
"1" and the valve spring compressor attachment
"2".
Valve spring compressor
90890-04019
Valve spring compressor
YM-04019
Valve spring compressor attach-
ment (ø26)
90890-01243
Valve spring compressor adapt-
er (26 mm)
YM-01253-1
G088959
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.
VALVES AND VALVE SPRINGS
3
6
2
G088975
6. Lubricate:
• Valve pad
7. Install:
• Valve pad
TIP
Each valve pad must be reinstalled in its original
position.
5-43
(with the recommended lubricant)
Recommended lubricant
Molybdenum disulfide oil