Step 6: Fixing the margin release
The margin release key is designed to let you temporarily go past the right hand margin. Photo 1 (taken from the rear of the machine) shows the margin stop (box noted on the left) and the margin release lever (box noted on the right). When you press the margin release key, the margin release lever should move rearward enough to let the margin stop pass so the carriage will continue to move (shown in Photo 2). On this typewriter the margin release lever didn't move far enough out of the way to let the stop pass.
I removed the right side panel (Photo 3) in hopes of finding some sort of a cam type of adjustment to remedy this, but there was none. What I did find, however, was a part of the linkage connecting the margin release key to the margin release lever had a dog-leg bend in it. You can see this in Photo 4. Using a pair of pliers, I adjusted this piece of linkage by bending it to slightly shorten it. After three attempts at adjustment, the margin release worked!