I appreciate the responses. I'm looking forward to getting back on the boat (kept in dry storage for now) and digging around some more.
Brian, I downloaded the manuals here: http://www.wellcraft.com/index.cfm?#/21/
Both Aquasport and Wellcraft are there. For the Aquasport, Section 4 is the only one of any value at all.
BTW, looking at one of the drawings it indicates the waste water pumpout was optional. It's looking like my boat doesn't have it. Is there a quick way to tell for sure?