REMOVAL & INSTALLATION
See Figure 1
- Disconnect the inlet and outlet fuel lines, as well as 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. Reattach the vacuum lines.
See Figure 2
- 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 (16 oz.) 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 inches.
- 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. Fuel pressure should be 3.00-5.00 psi (21-34 kPa) at idle.