Today I managed to remove the throttle lever and rod from the assembly. There is no nut (that holds the wheel on) visible at this point.
When I tried to press in and rotate counter-clockwise to remove the horn ring - it would not budge under moderate force. Before I break this thing .. thought I'd ask around to confirm that this procedure will work with the wheel this photo.
From Jim (last post):
Maybe I'm just looking for reassurance before putting more pressure on it. I sure can't see anything else to loosen or any other way to do this.That is not a Shellar wheel.
Dis-Connect the linkage and horn wire as said before.
Pull the throttle lever out.
>>>>>> Rotate the horn ring counter clockwise and remove. <<<<<<<<<<<<<<
Take photos.
Remove the 3 screws holding the horn parts in.
Loosen the nut in the center.
Say a prayer.
Try to remove the wheel. Chances are it is stuck. Search old posts for methods to remove the wheel.