Did you run it dry when you put it up or did you put RV antifreeze in it. If you ran it dry (no RV antifreeze), the rollers in the pump are stuck (rusted) and you need to take the pump apart and free the rollers. I always park mine with RV antifreeze in the pump. Keeps the rollers from hanging up. I have the same pump as you, different manufacturer of tan\k and spray heads