Yamaha F150A Service Manual page 99

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13. Remove the camshafts.
14. Remove the valve shim 7 from the valve
lifter 8 using compressed air.
NOTE:
Do not mix the valve train parts. Keep them
organized in their proper groups.
15. Measure the valve shim thickness using
a micrometer, and then note the mea-
surement.
16. Select the necessary valve shim by cal-
culating its thickness using the following
formula.
Necessary valve shim thickness =
Removed valve shim thickness +
Measured valve clearance – Specified
valve clearance
Example:
If the "Removed valve shim thickness" is 2.10
mm, the "Measured valve clearance" is 0.30
mm and the "Specified valve clearance" is
0.20 mm, then the "Necessary valve shim
thickness" = 2.10 + 0.30 – 0.20 = 2.20 mm
63P3F11
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S63P5100
17. Install the necessary valve shim into the
valve lifter.
18. Install the camshafts into the cylinder
head with new oil seals.
E
63P EX
NOTE:
Install the camshafts so that the dowels are
facing inward and that they are aligned with
the mating surface of the cylinder head.
Power unit
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63P IN
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S63P5110
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S63P5C70
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