Question about Singer 1120 Mechanical Sewing Machine

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Singer 6217C Bobbin Thread bunching

My machine has started bunching up tons of thread from the bobbin while sewing a straight seam. I have tried several different bobbins, same result. Not sure how to adjust bobbin tension on this machine. HELP!

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  • Anonymous May 24, 2009

    I've tried adjusting the bobbin tension, and it didn't help. I have re-threaded the upper thread and changed the thread tension. no luck. :(

  • Anonymous Mar 12, 2014

    how to change bobbin and thread machine

  • Anonymous Mar 15, 2014

    bobbin thread is bunching up

  • Anonymous Mar 22, 2014

    machine is not sewing the stitch properly, and the thread is bunching and not moving straight

  • Anonymous Mar 23, 2014

    Tendon adjustment

  • Anonymous Mar 24, 2014

    My machine sews fine for a little while then the bottom thread starts to look loopy. I've tried adjusting the tension but that doesn't help. Help

  • Anonymous Mar 29, 2014

    I am using light cotton fabric, cut into a 4 inch by 43-46 inch strip, I iron on heavy pellon 1 inch wide strip down the center and add a 1 inch wide strip of felt like batting about 1/16th inch thick, I then fold each edge in half and fold over the pellon and batting and then I try to sew several (5) lines on the purse strap for stability. This has been done on past straps successfully so I am having a hard time understanding how to fix this problem. I have tried to set the feed dog but this model has up or darning nothing for different thicknesses of fabric. Somemone, please help if you can. Thanks, Frankie

  • lisa harvey
    lisa harvey Sep 10, 2014

    make sure there are no threads wound around underneath

  • Jimmie Sill Feb 19, 2015

    Pull on your upper thread with your hand when the pressure foot is down. There should be some resistance. The tension on the upper thread is too low. Check the thread to ensure it is between the tension washers. The best tension adjustment to start at is four. The other thing to check is that you have your stitch distance above zero.

  • Jimmie Sill Feb 26, 2015

    1. Make sure the bobbin case is in place properly. It has to be loose enough to allow the top thread to be pulled on top and around the carrier.

  • Jimmie Sill Feb 26, 2015

    1. Thread the top thread and allow two inches of thread to hang from the bobbin. 2. Turn the hand wheel and watch the thread from the needle when it is under the plate. 3. If the needle thread doesn't flow across the top of the bobbin case without sticking. 3. If it is sticking-loosen the bobbin case holders to allow the thread to flow. 4. Make sure you have the bobbin case at about an equal risistance as the top tension when set to four.(This is approximate) 5. A good rule of thumb when threading the top is do it with the foot up. Give little tugs along the way. If there are snags they have to be fixed. 6. Once threaded without snags and flowing smoothly put the foot down. Pull to see if it is excess or too little. Adjust as needed.


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Posted on Oct 26, 2008

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Remove the fabric, unplug the machine... get into the bobbin area, remove the bobbin, and if necessary clean threads caught up in the bobbin race/shuttle. reassemble and replace the bobbin... turn on the machine. Try again.

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The thread on the bottom bunches up all down at the bottom than bunches up

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1. Make sure you are threading the machine correctly.
2. Check your tension.
3. Check the bobbin, make sure it's wound properly and that you don't have the bobbin in upside down.
4. Check for bits of fluff and thread in the bobbin race area.
5. Change your needle, they wear out, get bent, dull... etc. You should have several different types on hand at all times.
6. Grasp both the threads gently and pull slightly backwards when you begin a seam. this will assure that your bobbin thread doesn't get all bunched up under the fabric.
7. Always test tension, needles etc., on a scrap piece of fabric before you begin sewing your project.

:o) Smile... sewing is fun... remember?

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Suggest taking the machine back to where you bought it and have them try to help if you are doing something wrong, or replace the machine if it has an internal problem. Good luck!

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There is something wrong with the bobbin. When I sew it catches somewhere and bunches thread up underneath

Does this only happen when you begin sewing????? Make sure your upper and lower threads are long enough for you to hold them.......lower your pressure foot and don't release the threads until you have sewn several stitches into the seam. If you don't hold the threads when starting a seam...both threads often get pulled down into the bobbin area and cause a big tangled mess. Hope this helps.

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Thread bunchingup on bottom of material on singer

Here are some solutions to try.

* Re-thread your machine
It may be threaded incorrectly.

* Raise your feed dogs If your machine has this feature.

* When you start to sew a seam, hold the upper and bobbin thread tails back and out of the way as you sew your first couple of stitches. This will keep them from getting caught in your machine.

I hope this helps.

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First try stripping the bobbin or wind a fresh one with new thread double check tension settings and fit in the bobbin case

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