That shifter doesn't look that bad, as long as there is not water sitting in the bottom of the sump.
I think, if there is another nub on the other side of the tower, you turn the top "disc" that the lever comes through counter clockwise looking from the top. It should turn about 45 degrees and come off with a spring pushing from below. It should turn with not a lot of force, you might have to push down on it a bit while turning.
Last edited by sweepleader; 06/28/2019 10:58 PM.
