Here is a PDF for the 6913 lathe. Hope you find it useful. I almost bought a very used on for $800 at the beginning of the Great Recession and I was sorry I passed on it later.
http://igor.chudov.com/projects/Clausing-6913-Lathe/Clausing-6913-Lathe-Manual.pdf
Igor rebuilt a 6913 so take a look at his website.
http://igor.chudov.com/projects/Clausing-6913-Lathe/
http://igor.chudov.com/projects/Clausing-6913-Lathe/Clausing-6913-Lathe-Manual.pdf
Igor rebuilt a 6913 so take a look at his website.
http://igor.chudov.com/projects/Clausing-6913-Lathe/