Well, I have three Kenmores that are similar to it. Your machine uses the large blue grey or green and orange cams ( same cams just depends on what color die they used in the plastic)
Lots of accessories available for it too.
Here is Sears parts page for the machine, they didn't show an owners manual though.
{
http://www.searspartsdirect.com/part...hdMod=15817030 }
This page shows it to be made in 1972:
{
http://www.searsarchives.com/history.../sewing_id.pdf }
And here is a manual for it. Relics manuals are not free, but they are high quality laser reprints. I've got several of them.
{
http://pages.sewing-machine-manuals....1834491/1.html }
Hints:
The motor will have oil ports on each end. Use sewing machine oil only and give it a drink. Every Kenmore with internal motors I've worked with have been dry.
Use Tri-Flow and oil everything that moves or looks like it will move. It will make a big difference.
Use Tri-Flow grease on the cam drive gears.
Watch ShopGoodwill.com for the blue-grey or orange and green top hat cams. They have lots of different patterns available.
Joe