PAY DIRT!!!!! IT'S FFFFFRRRRRRREEEEEEEEEEEEEEEEEEEEEEEEEE!!!
Here is a site with FREE SERVICE MANUALS!!!!! The 401 is page 124 of a very long pdf!!! It is the same thing I got for $10 or $12 some where on line There are manuals of all kinds. I'm book marking this page for myself!
http://sewing-machines.blogspot.com/...e-manuals.html