It looks like I have a replacement fiberglass water tank as described in the Archive (#4526).IMG_0597.HEICDownload HEIC • 2.12MBIMG_0732.HEICDownload HEIC • 3.13MB
My whole staircase lifts right out.
I don't have a good photo of it.
With it out I have good access to some fuel valves and the water tank outlet.