Originally Posted by Ford Idaho
Clean out is a nozzle in the black tank that sprays the inside to wash any gunk to the bottom of the tank and then flush it out.
You may have a separate connection for the water hose near the fresh/city hook up.
Yes, I understand what the black tank flush is, I was just stumped by the use of the term "clean out" as in plumbing terms, that would represent an opening to access a waste line to....clean it out.
Maybe larryhobby would like to expand on his question - why are you needing to know exactly where the "clean out" (spray nozzle inside the tank) is located?