In the repair manual it shows the rubber O-ring for the fuel sending unit on the outside of the unit. In between the fuel sending unit and the lock ring. Is that right? It doesn't seem like it would seal, being put together like that. Any help? thank you.

The O ring goes against the round grove in the tank, the face of the sending unit goes on next and the clamp snugs the metal face against the O ring snugged up against the tank. Vaseline will hold it in place while you stick the float arm thru the O ring into the tank.

Edited November 11, 201311 yr by Diseazd

Guy described it exactly as I did it a couple of years ago & no leaks.

Thank you very much.