REMOVAL & INSTALLATION
See Figures 1 through 7
- Disconnect the inlet and outlet fuel lines, and any vacuum lines.
- Remove the two fuel pump body attaching nuts and lockwashers.
- Pull the pump and gasket, or O-ring, free of the engine. Make sure that the mating surfaces of the fuel pump and the engine are clean.
- Cement a new gasket to the mounting flange of the fuel pump.
- Position the fuel pump on the engine block so that the lever of the fuel pump rests on the fuel pump cam of the camshaft.
- Secure the fuel pump to the block with the two cap screws and lock washers.
- Connect the intake and outlet fuel lines to the fuel pump, and any vacuum lines.
TESTING - Volume Check
See Figure 8
Disconnect the fuel line from the carburetor. Place the open end in a suitable container. Start the engine and operate it at normal idle speed. The pump should deliver at least one pint in 30 seconds.
- Disconnect the fuel line at the carburetor.
- Disconnect the fuel return line from the fuel filter if so equipped, and plug the nipple on the filter.
- Install a T-fitting on the open end of the fuel line and refit the line to the carburetor.
- Plug a pressure gauge into the remaining opening of the T-fitting.
- The hose leading to the pressure gauge should not be any longer than 6 in. (152.5mm).
- Start the engine and let it run at idle speed.
- Bleed any air out of the hose between the gauge and the T-fitting.
- On pumps with a fuel return line, the line must be plugged.
- Start the engine. Fuel pressures are as follows:4-121 Engine: 4.00-6.00psi @ idle4-150 Engine: 4.00-5.00psi @ idle4-151 Engine: 6.50-8.00psi @ idle6-232 Engine: 3.00-5.00psi @ idle6-258 Engine: 3.00-5.00psi @ idle8-304 Engine: 4.00-6.00psi @ idle8-360 Engine: 4.00-6.00psi @ idle8-401 Engine: 4.00-6.00psi @ idle