Hercules — To Install the Fuel Pump
Repair & overhaul
From a Hercules owner's manual — check it applies to your exact model before use.
Procedure
- Place a new gasket on the fuel pump.
- Insert the rocker arm in the hole in the crankcase keeping the flange of the fuel pump in correct position while the two cap screws are started.
- A slight pressure will be exerted by the rocker arm springs while the screws are pulled tight.
- If pressure is excessive, remove the pump, turn the engine over one turn and install again.
- Connect the fuel lines.
Source: Hercules owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.