Authorized reproduction of the Pfaff dealers repair / adjusting and servicing manual which according to the table of contents is for the Pfaff models 785, 786, 787 and 788 which are named the hobbylock. There are lots of detailed diagrams and it even lists by part number the tools and gauges that would make servicing it easier. This is scanned from an original and I am sure that you will find it quite useful. The parts pages, with the diagrams, have been cut apart instead of left as foldouts. I have hand numbered them so I know that I scanned all of them. I hope that you will be able to get something slightly useful out of the parts information.