But I could not find it... I figured I had just overlooked it somehow. (hard to do when I can follow the fuel lines directly... )

Then I realized the system drawing I had was for both the Orion and the Mariah... perhaps the latter has the fuel tank located in a different spot. Also I am well aware that some Orions have fuel tanks located down in the bilge area, way below the engine, and further away.

I got to thinking about this and realized that perhaps the reason I couldn't find an electric fuel pump is that I don't have one.

My fuel tank is almost level with the engine, and a short distance away.