For threading, it is probably similar to
http://quiltville.blogspot.com/2013/...dventures.html Part of how I threaded my New National can be seen at
http://www.quiltingboard.com/vintage...e-t283436.html Maybe
http://needlebar.org/main/manuals/newhome/1index.html will help, too.
If I remember correctly I had some issues with the top tension, but by looking at the machine and the links I was able to get it to sew.
Janey - Neat people never make the exciting discoveries I do.