Yamaha F40B - Assembling the Fuel Pump

67C3K11 4-6
1
2
3
4
5
6
7
8
9
Assembling the fuel pump
NOTE:
Clean the parts and soak the valves and the
diaphragms in gasoline before assembly.
1. Install the plunger 1 and diaphragm into
fuel pump body 1 2, and then install the
pin 3 to the plunger.
NOTE:
• Align the pin installation holes a with the
slot in fuel pump body 1 2, and then install
the pin 3 while pushing the plunger 1 and
diaphragm completely inward.
• Turn fuel pump body 1 2 until the pin 3 is
90° from the slot in the body.
• Make sure that the projection b on the dia-
phragm is toward the port side.
2. Assemble the fuel pump as shown.
NOTE:
• Moisten the inside of the fuel pump with
gasoline to ensure a good seal.
• Make sure that the diaphragms are kept in
place through the assembly process.
• After disassembling and assembling the
fuel pump, check it for air leaks. See
“Checking the fuel pump” (4-4).
S67C4013
3
a
1
2
S67C4014
2
b
90˚
S67C4015
Fuel pump, fuel filter, and fuel joint