The only access i know of is behind the sofa, not a lot of room. I replaced all the fittings and added a drain. Found the easiest way was to take off the sofa back
I saw the same but could not find the hatch. Pulling carpet out so will also keep everyone in loop.. thanksAlthough I cannot confirm this, the drawings show a hatch in the mid cabin. I don’t have a hatch so I am assuming it’s under the carpet. When I replace the flooring I will post it but I’m just not sure if it’s actually there.