Fuel Pump: Service and Repair

REMOVAL

1. Loosen the threaded fuel line connections and tighten snugly. DO NOT remove lines at this time.
2. Loosen mounting bolts one to two turns. Apply force to loosen fuel pump if gasket is stuck. Rotate the engine, by nudging the starter, until the fuel pump cam lobe is near its low position. The tension on the fuel pump will be greatly reduced at the low cam position.
NOTE: The outlet line is pressurized. Disconnect the fuel pump inlet, outlet and fuel vapor return line, if equipped. Use care to prevent combustion of spilled fuel.
3. Remove the attaching bolts on the fuel pump and remove the pump and gasket.

INSTALLATION

1. Remove all the fuel pump gasket material from engine and fuel pump if installing the pump.
2. Install the attaching bolts into the fuel pump and install a new gasket on the bolts. Position the fuel pump to the mounting pad. Turn the attaching bolts alternately and evenly and tighten. Refer to SPECIFICATIONS/MECHANICAL for tightening torques.
3. Install fuel outlet line. If it is a threaded connection, start fitting by hand to avoid cross threading. Tighten.
4. Install the inlet line and fuel vapor return line, if so equipped. Install hose clamp(s).
NOTE: Replace rubber hoses with new fuel line type hoses if cracked, hardened or frayed.
5. Start the engine and inspect for fuel leaks for two minutes.
6. Stop engine and check all fuel pump fuel line connections for fuel leaks by running a finger under the connections. Check for oil leaks at the fuel pump mounting pad.