Yamaha F100D Service Manual

FUEL
Fuel system
4-5
6D93G11
Checking the fuel pump
1. Place a drain pan under the fuel hose
connections, and then disconnect the
fuel hoses from the fuel pump.
2. Connect the special service tool to the
fuel pump inlet.
3. Cover the fuel pump outlet with a finger,
and then apply the specified positive
pressure. Check that there is no air leak-
age.
4. Apply the specified negative pressure
and check that there is no air leakage.
5. Connect the special service tool to the
fuel pump outlet.
6. Apply the specified positive pressure and
check that there is no air leakage. Disas-
semble the fuel pump if necessary.
NOTE:
Assemble the fuel pump valve to the fuel
pump body, and moisten the inside of the fuel
pump with gasoline to ensure a good seal.
Disassembling the fuel pump
1. Disassemble the fuel pump.
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.
Vacuum/pressure pump gauge set:
90890-06756
Specified pressure:
50 kPa (0.5 kgf/cm
2
, 7.3 psi)
Specified pressure:
30 kPa (0.3 kgf/cm
2
, 4.4 psi)
S63P4090
S63P4100
Specified pressure:
50 kPa (0.5 kgf/cm
2
, 7.3 psi)
S63P4110

Yamaha F100D Specifications

General

Brand	Yamaha
Model	F100D
Category	Outboard Motor
Language	English