Yamaha F100B - Disassembling the Fuel Pump; Checking the Diaphragm and Valves; Assembling the Fuel Pump

60C5D11
4-8
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2
3
4
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Disassembling the fuel pump
1. Disassemble the fuel pump as shown.
2. Push down on the plunger and the dia-
phragm, turn the 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.
Assembling the fuel pump
1. Align the plunger and diaphragm installa-
tion holes
a
, and then install the plunger
into the diaphragm.
2. Push down on the plunger and the dia-
phragm, and then install the pin
1
.
3. Turn the fuel pump body 1
2
approxi-
mately 90°, and then push down on the
plunger several times to make sure that
the pin does not come out.
S60C4060
S60C4090
Fuel pump