Inspection Of Fuel Pump; Inspection Of Fuel Connector - TOHATSU MFS 25D Service Manual

3) Inspection of Fuel Pump

1. Remove the fuel hoses (2 pcs.) from the fuel pump.
2. Connect the vacuum/pressure gauge to the inlet of the fuel
pump.
3. Close the fuel pump outlet with your finger and apply the
specified pressure. Make sure there are no air leaks.
Vacuum/Pressure Gauge:
P/N. 3AC-99020-1
Specified Pressure:
0.05 MPa (7 psi) [0.5 kgf/cm
4. With the outlet closed, apply the specified vacuum
pressure to check that there are no air leaks.
Specified vacuum pressure:
5. Connect the vacuum/pressure gauge to the outlet of the
fuel pump.
6. Apply the specified pressure to make sure that there are
no air leaks. Replace if necessary.
The air-tightness of the fuel pump can be increased
by wetting the inside of the fuel pump with gasoline.
Specified Pressure:
0.05 MPa (7 psi) [0.5 kgf/cm

4) Inspection of Fuel Connector

1. Check fuel connector for crack and damage.
2. Connect vacuum/pressure gauge to outlet of fuel
connector.
3. Apply the specified pressure, and check if the pressure is
maintained for 10 seconds. Replace if necessary.
Vacuum/Pressure Gauge:
P/N. 3AC-99020-1
Specified Pressure:
0.029 MPa (4 psi) [0.3 kgf/cm
4st 25/30 2022
]
2
]
2
]
2
]
2
4
4-33