Originally Posted by
Stitchnripper
Have you tried a different bobbin?
Thanks for the reply. I haven't because it doesn't seem that it's hanging up on the bobbin itself - it's definitely "outside" of the bobbin and where it slips into the machine. When it jams, the bobbin still moves freely as does the lower thread.
We've been able to get the machine running again by even deeper cleaning (under the dogs) which came up in one of our searches as something to look at. The machine is getting a few hours of use on a daily basis, but I am surprised at just how few days of use like this it takes to get dirty enough to cause it to jam up...