Hi all, I have a ’54 Merc Monterey. The original 256 is history and has been replaced with a (I believe) 312. It’s being fed by an electric fuel pump and the mechanical pump has been bypassed. I would prefer to stay with the mechanical pump but I spent the afternoon reversing things (bypassed the electric pump and hooked up the mechanical one) and the mechanical pump doesn’t seem to work. The tag on the mechanical pump reads “5042” and there is no clue as to manufacturer. I searched for rebuild kits or a rebuilt pump but can’t find any reference to a “5042” fuel pump. Do I have the correct pump? Where can I get a rebuilt pump or rebuild kit?

In the meantime, back to the electric pump.

Thanks, Ed