How do I Change a pump in a 240 efi mercury marine sportjet?

To change the fuel pump in a 240 EFI Mercury Marine Sportjet, first, ensure the engine is off and disconnect the battery. Remove the fuel lines connected to the pump, taking note of their arrangement for reinstallation. Unscrew the old pump from its mounting, replace it with the new pump, and reattach the fuel lines securely. Finally, reconnect the battery and test the system for leaks before starting the engine.