Durcott

There we have it - cover gasket called up in Jabsco parts list. No cover gasket installed !

There is a fair bit of oil in the bilge, so that's a good call. Thanks for the insight.

Ahh - thankyou Bilgediver. That makes a lot of sense.

Good evening All - a quick sanity check if I may - I see there is a Jabsco 23680-4003 bilge pump unit in this boat I've recently...