Hi & welcome to the boards.
I have a Kenmore in my garage that my husband bought that looks a lot like the machine you are asking about. First chance I get I'll find it & see if it's your model & if I have the manual. If so, maybe I could scan it & email it to you to copy. I'll get back with you later.
Here's a diagram on how to thread the machine. I haven't located a free downloadable manual yet but am still looking.
http://www.sewusa.com/Threading_Diag...ng_diagram.htm