- Sun Mar 26, 2023 6:59 pm #16194
So I got a 9420 T from a thrift store and put the needle to hook back in time. I have a problem where sometimes is sews great and most of the time I get a bobbin jam. What happens is as the hook is pulling the thread around the bobbin case it pulls the bobbin case forward[/img] and out of position where the thread tangled on the case next time around. It is a top load bobbin with a plastic case. The bobbin is threaded as per directions as well as the machine. I tried a couple new needles and new bobbin cases. The cases do help until you get a jam and it scratches the case then you get tons of jams again. I’m not buying anymore bobbin cases so I’m checking if anyone has come across this before and was able to fix it. I attached a couple pictures of how it looks and then how it looks after it pulls the bobbin case forward. I think this is a god awful bobbin design but it’s what I got for the time being. Any thoughts? It is threaded correctly and the tension has been adjusted to every possible choice with no change in the problem.