Yamaha F150 Service Manual Page 113

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Page view 112
63P3F11
5-28
1
2
3
4
5
6
7
8
9
Removing the cylinder head
1. Remove the camshaft caps in the
sequence shown.
2. Remove the camshafts and cylinder
head bolts in the sequence shown.
CAUTION:
Do not scratch or damage the mating sur-
faces of the cylinder head and cylinder
block.
3. Remove the valve shim
1
from the valve
lifter
2
using compressed air.
NOTE:
Do not mix the valve train parts. Keep them
organized in their proper groups.
4. Remove the intake valve and exhaust
valves.
NOTE:
Be sure to keep the valves, springs, and
other parts in the order as they were
removed.
Checking the valve springs
1. Measure the valve spring free length
a
.
Replace if out of specification.
S63P5100
1
5
2
4
3
1
5
2
4
3
S63P5170
B
4
J
G
0
9
C
5
7
6
F
I
H
D
E
A
8
1
2
3
Valve spring compressor
3
:
90890-04019
Valve spring compressor
attachment
4
:
90890-06320
Valve spring free length
a
:
44.20 mm (1.7402 in)
Cylinder head
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