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Locked up sewing machine

I have a singer 20u33 commerical machine . I was just sewing and it locked up . I can't get it to move either way . I took the bobbin case out , it seems fine It's done this before but I don't know what I did to unstick , Seems like it finally just did .

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  • sksskygram Nov 25, 2008

    I had pulled out visible thread before I emailed you with my problem . After your reply I thought there must be a thread I can't see . I loosened the bobbin case and found more thread . After I put back togather I had a hard time setting the timing of the needle . Is there a easier way to set that ? It's working now


  • hgrunenwald Dec 23, 2008


    I was using my 2662 model to sew fancy stitching on some denim squares when my machine jammed / locked up. I removed the cover over the bobbin and noticed that a lot of fuzz from the denim had built up, so I cleaned it out with my brush. 

    After it was still jammed, I even unscrewed and removed the cover over the needle area and re-cleaned the bobbin area several times. 

    The last thing I thought of was re-oiling the machine per a suggestion in the user guide. When I turn it on, it just hums and remains jammed. 

    Any suggestions? It's quite expensive to repair! Thank you!



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Posted on Jan 02, 2017

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SOURCE: singer quantum cxl sewing machine needle hitting metal

Your needle is probably to long or you need to open it more

Posted on Apr 08, 2009

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SOURCE: needle hitting bobbin case model 750

This is a timing problem the hook timing needs adjustment, and possible the needle timing also

Posted on Oct 13, 2009

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SOURCE: How to replace the bobbin case in a singer sewing

If you go here and search for 9005, you can find a free downloadable instruction manual.

Posted on Jul 22, 2010

  • 1 Answer

SOURCE: Singer 4562 t bobbin case won't fit properly, what am I doing wro

Make sure the bobbin case sets sort of on top and not under the ridge of the metal ring. There is a small latch on the upper left of the bobbin case. It is metal. rotate the latch to cover the bobbin case and this should stabilize the case without making it immobile

Posted on Aug 01, 2010

  • 1788 Answers

SOURCE: The bobbin case on my Singer CE-150 embroidery

It must not be inserted right, check your manual and if you do not have it handy, go to and download one for free. You can cause real damage if it is loose, so be careful that something isn't broken and not letting it seat right.

Posted on Sep 11, 2010

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