Checking The Diaphragm And Valves; Assembling A Fuel Pump - Yamaha F150A Service Manual

2. Push down on the plunger and the dia-
phragm, turn fuel pump body 1 1
approximately 90° to a position where the
pin 2 can be removed easily, and then
remove the pin.
3. Slowly let up on the plunger and dia-
phragm, and then remove them.

Checking the diaphragm and valves

1. Check the diaphragm 1 for tears and the
valves 2 for cracks. Replace if neces-
sary.
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63P3F11
Fuel filter, fuel pump, and intake silencer

Assembling a fuel pump

NOTE:
Clean the parts and soak the valves and the
diaphragm in gasoline before assembly to
obtain prompt operation of the fuel pumps
when starting the engine.
1. Align the plunger and diaphragm installa-
2. Push down on the plunger and the dia-
3. Turn fuel pump body 1 2 approximately
2
NOTE:
Make sure that the gasket and diaphragm are
kept in place through the assembly process.
S60C4090
tion holes a, and then install the plunger
into the diaphragm.
phragm, and then install the pin 1.
90°, and then push down on the plunger
several times to make sure that the pin
does not come out.
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