Re: OMC small square fuel pump orientation

[DAN ANDERSON]

The way I remember it (long time ago) that pump was used in several different configurations. It could be put together with the outlet in different directions. The up mark on the tab was so you won’t put that section of the pump in upside down? That is how I understood it. I know we have people who have come up with good ideas of how to assemble those pumps. It helps a lot in putting them together.
The problem is I don’t like the little pumps! Back in the day there was no little pump. They knew something back then. Today’s fuels make it even harder for the little pump to do its job. Ethanol & oxgenated fuels vapor lock easier & the pump has to over come that. The bigger pumps have the ability to purge the air better. I try to avoid the small pump if at all possible. The big pumps are usually cheaper & do a better job. Sometimes you just have to get a little creative in finding the space you need for mounting. Thank goodness the hole spacing is the same!

Dan in TN