Carol, My DH was doing some research on the web and couldn't find a free 401A manual, but turns out the 431 is the same with the exception that it has a chain stitch option and a free arm. The PDF takes FOREVER to download, but here is the link to it:
http://www.ismacs.net/singer_sewing_...anuals/431.pdf
I have flipped through it and it seems very similar to my 401A manual with the differences I mentioned before. Hope it is of help to you. Remember to give the PDF time to download.