Simplicity Pioneer II SA200 Mechanical Sewing Machine "8192" Questions

I am looking for pfaff hobbylock 786 serger manual do you know where I can get one? ISBN 0-8019-8192-1(hc)? or ISBN 0-8019-8191-3(pb) by Naomi Baker & Tammy Young - "Know Your Pfaff Hobbylock" ...