How do you replace the fuel pump on a 1994 Subaru legacy wagon?

To replace the fuel pump on a 1994 Subaru Legacy wagon, first, disconnect the negative battery terminal and relieve fuel system pressure by removing the fuel cap and using a fuel pressure gauge. Then, access the fuel pump by removing the rear seat cushion and the cover for the fuel pump in the trunk. Disconnect the electrical connector and fuel lines from the pump, then unbolt and remove the old pump. Install the new pump by reversing the steps, ensuring all connections are secure before reinstalling the cover and seat.