Because machine is computerised unable to move bobbin wheel
Take the needle out of the needle holder
remove the needle plate, be careful not to damage the screws
take the bobbin out and use a small brush or a can of computer air to clean dust, use a pair of tweezers to pull the thread of the bobbin area if needed
SOURCE: Bernina 1130 not catching bobbin thread
there will be a adjustment in that you should select the stiching
mode and in that give the straight mode the problem will be solved
SOURCE: Bobbin Case
I'm having a similar problem today. I took out the bobbin case and when I went to put it back in, the whole system locks up. I've tired cleaning, changing needle taking the metal plate and piece that holds bobbin case out and put it all back in after cleaning. Nothing. My symptom is I can't get a complete stitch, the needle goes down, the whole deal acts like it will work and as soon as the arm of the bobbin case gets to 8 o' clock on the gears, It jams and won't hardly move. I cannot pull the bobbin case out easily after this. Perhaps there is someone out there that can help us!
SOURCE: while sewing the bobbin case moves, wheel locks up, needle locks
Im not sure if this will help but thought I would pass it along. My Pfaff 6122 tells me to check bobbin for thread unrolling clockwise before you place it back in the machine. I had mine turned to un roll counter clockwise, this is wrong, the bobbin will fall out when you pull on the thread while you are holding it in your hand. You may just keep putting it in backwards. Hope this works for you. J.R.
SOURCE: Machine not working after bobbin installation
Hi, it may be possible that you put the bobbin in the case upside down and its turning the wrong way. Flip it over and try it. When looking at the bobbin in the case from the back and you pull the thread, it should turn clockwise.
Hope this helped as anything else may take a tech to diagnose.
Rick
SOURCE: My bobbin case came out
I just had this same problem and although i could not find the answer online, I managed to fix it.
If you look at the bobbin case there are 3 different tabs sticking out.
First you need to have tab #1 under the main part of the machine, and #3 over top of the small twisted metal piece below the bottom fabric gripper.
The hard part is to get the second tab into the proper spot. I circled the piece that you need to move in red. If you move the little piece by pushing it with a flat screw driver, you can line up the bobbin case so that tab #2 is under the metal piece and the bobbin case will be properly set.
Don't give up! It wasn't easy to get it back but I did it, I'm sure you can too!
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