I have been having a heck of a time trying to get the bobbin shuttle threaded and working right on my family's sewing machine. No one knows how to use it. I used it a couple years ago making a liner for my sleeping bag, but its been so long since I ran it I can't figure it out.
The machine is a brother ls-1217 if it helps any.
Basically, the thread from the needle wraps itself up on the shuttle. It never completes the cycle and keeps wrapping up until it jams the machine.
One question I have after doing some research this evening, it appears the shuttle stays in place and the bobbin is what is removed to thread, but does the tail coming out of the bobbin go anywhere? Do you thread it back up through the table somehow? Do you put it in front? Do you get it behind somehow?