Yamaha F150B, Service Manual

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Intake manifold
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Checking the intake manifold
1. Check the intake manifold. Replace the
intake manifold if cracked or deformed.
Checking the air pressure sensor
1. Check the air pressure sensor exterior.
Replace if cracked.
2. Check the air pressure sensor electrical
performance. See “Checking the air pres-
sure sensor” (5-32).
Checking the ISC
1. Check the ISC exterior. Replace if
cracked.
2. Check the ISC electrical performance.
See “Checking the ISC” (5-17).
Installing the intake manifold
1. Install new gaskets onto the intake mani-
fold. Make sure that tab on the gaskets is
properly and firmly fitted into the groove
on the intake manifold.
2. Install the pins
a
.
3. Align the positions
a
with the pins
a
when installing the intake manifold
b
.
a
a
a
a
a
a
b