Installing The Cylinder Head - Yamaha F150A Service Manual

POWR
2. Install the valve 2, valve spring 3, and
valve spring retainer 4 in the sequence
shown, and then attach the special ser-
vice tool.
NOTE:
The valve spring can be installed in any
direction.
Valve spring compressor 5:
90890-04019
Valve spring compressor
attachment 6:
90890-06320
3. Compress the valve spring, and then
install the valve cotter 7 using a thin
screwdriver with a small amount of
grease applied to it.
4. Lightly tap the valve spring retainer with
a plastic hammer to set the valve cotter
securely.
5-35
Power unit
NOTE:
Apply engine oil to the valve shims and valve
lifters before installation.

Installing the cylinder head

1. Install a new gasket and the cylinder
head, and then tighten the bolts to the
specified torques
shown.
9
G
E
5
C
1
A
B
4
D
F
8
J I H
CAUTION:
Do not reuse the cylinder head gasket,
always replace it with a new one.
S63P5210
in the sequence
0
E
6
2
3
7
a
90˚
S63P5220
63P3F11