Question about Brother LS-1217 Mechanical Sewing Machine

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Thread knotting around bobbin case

When I try to sew, the upper spool thread gets knotted around the bobbin case and locks the machine up. How do I fix this problem?

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  • tabathagk1o1 Mar 13, 2008

    Same here. When I begin to sew, the top thread gets stuck around the bobbin wheel and my machine locks up. I have tried adjusting the tension, dusting the machine, changing needles, everything. I think my tension **** may be broken. When I adjust it, I don't notice any difference. Should there be a noticable difference in the tension when I pull on the thread after adjustment? HELP!

  • boaterchic Mar 21, 2008

    I have a ellageo machine and I to am having trouble with the top thread knotting up around the bobbin. I love my machine, how can I fix it?

  • gbasford Mar 27, 2009

    The needle thread gets knotted around my bobbin wheel too! i have absolutely no idea what to do?
    i need help!!!!

  • Anonymous Mar 14, 2014

    thread knotting around bobbin case in singer 5500

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Hello, I had the exact same problem and could not find the solution until i took my machine to my sewing sensei and i solved my tedious problem. It was actually not a tension problem at all but a threading problem. Make sure you have threaded your bobbin correctly and that when you pull on the bobbin thread that the bobbin turns the right way. (mine must spin anti clockwise to work)  Make sure that when you pull up the bobbin thread using the needle that it is not over the feed dogs connective bar but under it. A big problem when the thread gets caught around the bobbin case wheel is that the thread is looped around the feed dogs once and that causes the thread to get caught around the bobbin wheel. In conclusion, thread the bobbin correctly and read over your instruction book before spending the money to get it fixe in s shop.

Posted on Mar 31, 2009

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3 Answers

Thread bunches up into a knotted mess on bottom. Bobbin doesn't sit flat inside the bobbin case but spins with a tilt, lower on the left and higher on the right. Bobbin touches plastic cover plate.


Usually, thread bunching under the fabric is an upper tension issue. Be sure to ALWAYS RAISE the presser foot when threading the upper thread.

With the bobbin case operating at a tilt, there is something mechanically wrong with the machine. It may be best to take it for service.

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My machine is a singer 2259 tradition my machine is making knots, i can sew two points and then it s totally locked aqnd won t work any more because it's full of knots


Machine threaded incorrectly. Insufficient tension on upper thread. Bobbin case spring broken. Lint clogging thread path. Bobbin wound incorrectly.

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How to stop bobin thread from knotting


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The thread knots up under the feed dog on about the second stitch


hi! well, you can try to set up your thread accurately followed this
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casing.next set up your upper thread tension.on fig is just a sample.9cbc7d3.jpg follow the red thread set, try this on single straight sewing with dial stich set up to # 8 range to #17,Dial tension to # 3. use cotton/polyester foe sample sewing. try on hand maual sewing first several time before applying foot pedal to avoid needle breakage,

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Thread test
Test your thread quality to start, thread your machine and LIFT the presser foot (this opens the tension disks). Pull your top thread straight back. If you feel no tension no mater how much thread you pull, your thread is good. If that your machine passes that test, then let me know, we can go to step 2. If not, try different spool of thread, same test until you get a smooth pull (tip: always check your thread this way when you thread your machine)
Step 2:
Pull on your threaded bobbin thread while it’s in the machine. Does it pull smooth and even? If so, go to step 3. If not, try a new bobbin (bobbins get bent or distorted if wound too tight).
Clean thoroughly in the hook and bobbin case area and oil 1-2 drop is all.
Thread knotting on the bobbin can be a lot of things but here's some guidance:
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If the thread is loose on the bottom of the fabric, it's actually the top thread is too loose. Think of 2 little elves playing tug of war in your machine, one on toip and one underneath. If you have loops on bottom, the top needs to pull harder (tighten top tension)
Jamming bobbin case:
If it is damaged from turning out of place once, it could have rough spots on it that makes the thread hang on it, and keeps making it turn over and over. Use a finger nail board (fine sanding) and smoothall rough spots. Then reset the bobbin case taking care to put the notch in the bobbin case in alignment with the proper spot in the machine (basically 5 o’clock) when looking at the round area where the bobbin case goes.

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"Birdnesting" occurs when there is no tension on the needle thread to pull the bobbin thread. This is easily corrected by rethreading the machine, following the threading path carefully and making sure the thread is fully engaged in the tension mechanism.

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In 99% of all problems with "bird's nesting" or "knotting" it is an issue of the thread coming out of the take up lever (at threading guide #3) (from the spool; through the first thread guide at #1 down to #2 and up to # 3) when the thread comes out of the take up lever, the machine can not regulate the thread and it floods the machien with thread and wraps itself around the bobbin case. OR! Your tension is too loose. Raise it. Your machine should preform perfect at tension #4 unless you are using speciality threads or fabrics.

ALWAYS be in the habit of threading your machine with presser foot up so that while threading between paths 1 and 2 you are certain to have the thread pass throught the tension disks.

This will happen on a $50.00 machine or a $5,000 machine. The thread needs to be regulated.

USE GOOD THREAD!

Thanks,

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