Yamaha XSR MTM690 2016 Service Manual page 275

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4. Install:
• Valve spring seat "1"
(into the cylinder head)
• Valve stem seal "2"
• Valve "3"
• Valve spring "4"
• Valve spring retainer "5"
TIP
• Make sure each valve is installed in its original
place.
• Install the valve springs with the larger pitch "a"
facing up.
3
b. Smaller pitch
5. 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".
S
New
5
New
2
4
1
VALVES AND VALVE SPRINGS
Valve spring compressor
90890-04019
Valve spring compressor
YM-04019
Valve spring compressor attach-
ment
90890-01243
Valve spring compressor adapt-
er (26 mm)
YM-01253-1
6. 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.
7. Lubricate:
• Valve lifter
(with the recommended lubricant)
Recommended lubricant
Engine oil
8. Install:
• Valve pad
• Valve lifter
TIP
• The valve lifter must move smoothly when ro-
tated with a finger.
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