Thanks everyone. As near as I can tell most every thing else moves. The presser feet an the hand wheel, but only just the play. I have dowsed it with oil top to bottom.
Reverse buttons are a royal pain, Miriam, I just got through unsticking last week. And after that, I began work on a 500A that it appeared someone had sprayed with pam cooking oil. It was covered with this yellow oil. Tri-flow didn't do much, but WD40 did and after I got all the old gum out I oiled it again with tri flo and sewing machine oil. The presser foot bar on that one was gummed with that yellow stuff too. Took several days of WD to get it moving. Got it moving a bit, but it would take 30 seconds for it to drop under full presser. Now it plops down the way it should.
Thanks again everyone.
Ethel