Originally Posted by DonFitz
What's the trick? I'm replacing a window and need to remove the arm to repalce the window. I've searched the forum and have looked for a set screw but I don't see any. It looks as though there is a thin washer on the outside up against the flange but it doesn't budge. Any thoughts?
That "washer" is what is holding the arm onto the window.
You must remove it.
Use a screw driver to pry it off.
Sometimes they will break, sometimes not.