OK, probably a simple fix (I hope)
My pump handle on my standard marine toilet won't move up or down without a tremendous amount of force. I thinks something's blocked, creating pressure. I've opening the deck pump-out to see if that would relieve pressure...no go. I've also tried pumping to both the holding tank and pumping to the outside (nothing is in the holding tank), and I've cleaned the water strainer...no change. Any other ideas?