I just bought a 1994 glassport In/Out all went well except for it ran for 3 or 4 seconds after I shut it off? But also the fuel guage does not work I checked the wire connections at the guage. I wanted to check the sending unit and I don't know where my tank is located? This is my first non Outboard so this tank in the floor is new to me is there a cover or something I lift to access to it?