Inspection Of Fuel Pump - TOHATSU MFS 9.9 Owner's Manual

Clean and check filter 1 in the carburetor, and replace with
6.
new one if necessary.

4) Inspection of Fuel Pump

1. Remove fuel hoses (2) from fuel pump.
2. Connect vacuum/pressure gauge to inlet of fuel pump.
3. Close fuel pump outlet with a finger and apply specified
pressure. Check if no air leaks.
Vacuum/Pressure Gauge :
P/N. 3AC-99020-0
Specified Pressure :
0.049 MPa (7 psi) [0.5 kgf/cm
4. Apply specified vacuum pressure to check that no air leaks.
Specified Vacuum Pressure :
-0.029 MPa (-4 psi) [-0.3 kgf/cm
5. Connect vacuum/pressure gauge to outlet of fuel pump.
6. Apply specified pressure to check if no air leaks. Replace if
necessary.
Air-tightness of fuel pump can be increased by
making the interior wet with gasoline.
Specified Pressure :
0.029 MPa (4 psi) [0.3 kgf/cm
4st 9.9/15/20 2008
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