Yamaha F30B 2018 Service Manual page 190

2. Install:
• Valve guide New
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a. Install a new valve guide "1" to the speci-
fied installation height "a" from the cam-
shaft side.
a
Valve guide remover/installer "2"
90890-06801
Valve guide remover "2"
YB-06801
Valve guide installer "3"
90890-06810
Valve guide installer "3"
YB-06810
Installation height
16.30–16.70
0.6575 in)
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2
3
1
mm (0.6417–
7-35
3. Ream:
• Valve guide "1"
TIP:
• To ream the valve guide, turn the valve guide
reamer clockwise.
• When removing the valve guide reamer, do
not turn it counterclockwise.
• After reaming the valve guide, make sure to
clean it.
1
Valve guide reamer "2"
90890-06804
Valve guide reamer "2"
YB-06804
4. Measure:
• Inside diameter
Inside diameter IN
5.500–5.512
0.2170 in)
Inside diameter EX
5.500–5.512
0.2170 in)
Camshaft and valve
2
mm (0.2165–
mm (0.2165–