I believe I have an original (1979 vintage) single lever trottle/shifter control on my J-30. I want to remove it to service it - the neutral shifter knob is very hard to move in and out. I removed the center knob and loosened the set screw and removed the shifter lever. Now how do you remove the outer flange. There is what looks like a "nut" with four notches in it around the shifter shaft. Does this screw off? What kind of wrench fits it. Does anyone have any knowledge of this and how to remove it?
Thanks for the help.
