Is there a part missing? Looks like a large diaphram thing at the bottom of the bowl. when you step on the pedal it opens and I can see a tank below filled with water.
is that the holding tank?
after letting go of the foot pedal the diaphram closes, but water still runs around it. I guess to seal the gases out?
i'm hoping there is nothing missing there. i think marine toilets could be costly.
thanks! and I'll try not to ask so many questions soon