Yamaha F150B, Service Manual

Page: 188 / 458

6-11
FUEL
Fuel system
3. While holding the fuel pump body 1
a
in
place, insert a flathead screwdriver into
the hole
c
in the plunger
e
and rotate it
90°.
4. Remove the pin
f
.
5. Disassemble fuel pump body 1 assembly
a
.
Checking the diaphragm and valve
1. Check the diaphragm
a
. Replace the
diaphragm if torn.
2. Check the valves
b
. Replace the fuel
pump body 2
c
if deformed or worn.
Assembling the fuel pump
Before assemble the fuel pump, clean the
parts and soak the valves and diaphragm in
gasoline to obtain prompt operation of the
fuel pump.
1.
Assemble fuel pump body 1 assembly
a
.
2. Hold the fuel pump body 1 assembly
a
.
3. Make sure that the holes
c
in the
plunger
c
and diaphragm
d
are aligned.
a
a
c
c
90
e
e
f
General cylindrical tool
b
:
a
= 20.0 mm (0.79 in)
b
= 17.0 mm (0.67 in)
a
b
c
a
a
b
b
b
a