Pfaff hobbylock will not run

SOURCE: Pfaff serger stuck

your needle bar has been pushed up and is out of adjustment. You need to take off the side cover, there should be a screw on the back of your machine holding it on. Remove this screw, and remove the cover.You may have to remove the light assembly to reach the screw on the needle bar. Once you can see the needle bar, rotate the handwheel until you can see the screw on the needle bar. Loosen this screw SLIGHTLY until you can turn the needle bar. Hold and rotate the needle bar back and forth as you push down slightly. This will lower the bar.Lower it about 1/4 inch. Adjust the needles by turning the bar so that they are straight across. Tighten the needle bar screw so that the bar doesn't move. Turn the handwheel to see if the threads will be picked up. If not, adjust until they are. Tighten the needle bar screw tightly,reinstall the side cover ,and tighten the screw. Change your needles.Rethead and sew.
sewman7

SOURCE: pfaff hobbylock serger 784 786

I cannot make a roll hem on my Pfaff 784

SOURCE: Pfaff hobbylock 794

The needles are changed by inserted the hex wrench into what looks to be holes on the front and left side where the needles go into the machine.I'm not sure what size the hex wrench is but it's pretty small. From the manual,
"Removing Needle: Unplug the machine. Turn the handwheel counterclockwise to raise the needle bar to its highest position. Loosen the needle clamp with the allen wrench and pull the needle out." and
"Inserting needle: When the neddle bar is at the highest position, insert a new needle in the needle holder, making sure that the groove of the needle faces you. Push the needle as far up as it will go and tighten the needle clamp screw." "Removing Needle: Unplug the machine. Turn the handwheel counterclockwise to raise the needle bar to its highest position. Loosen the needle clamp with the allen wrench and pull the needle out."

The machine takes DB x 1, or 1738 needles, and a size 14 needle is recommended.

Hope this helps!

SOURCE: lost instruction manual

ebay

SOURCE: I am looking for pfaff hobbylock 786 serger manual

ISBN 0-8019-8192-1(hc)? or ISBN 0-8019-8191-3(pb) by Naomi Baker & Tammy Young - "Know Your Pfaff Hobbylock" covers Pfaff Hobbylock: 797, 786, 784, 783 - Great book. This book is more helpful since it has detailed info pics in color- 182 pgs, @$3.00. Lists parts, projects, etc. The 786 manual has errors, 35 pgs. not detailed as the book above. Good luck! Fairlyart