I use this method when you cannot fully rotate the handle.
Get the appropriate T-handle hex or torx driver, lift the handle
to disengage it and turn the handle mounting screw CCW.
The screw does not loosen from the body of the Kipp lever.? ?
--
Jerry P
Life is what happens to you when you're making other plans.
"You can observe a lot by watching."? Yogi Berra