Thanks for the feedback. I found the cable in the bilge, and it was still attached to the arm. I put the selector switch to auto and was able to pull back on the valve armature and expose the cable. I sprayed some silicone lubricant on it, and worked it back and forth a bit. The cable will move the armature when moved to empty, but will not move the armature when moving it back to automatic. I guess the valve must be too tight for the cable alone to move it. Does this sound like the valve is bad? In any event, I ordered a new valve and will change it over the weekend. What do you guys think?