33 express aft bilge pump

After changing the front float switch on my 272, and looking at what it would take to change the aft, I called my local dealer and had them change the aft switch when they came to winterize. It was the best $50 labor I ever spent.

Good luck with yours. I can't imagine it is any easier to get at than mine.
 
I did it on my 01 330 standing on a five gallon bucket behind the boat it was a real chore I changed pump and switch good luck
 
I left the old one it in..Took a piece of aluminum flat stock..Mounted the new unit on the tip of the flat stock.. Lowered to the bilge ..screwed the flat stock to the transom area in the bige.Wahlaa..now its easy to service and test.. Wires are handy..
 
Not really on top..Just off to the side.. Then tighten down the aluminum straping... I even mounted my switch the same way on anither piece.