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My bobbin thread breaks too much. How do I fix it.

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R.A. Ellis

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  • Sewing Machines Master
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Be sure you are using the correct bobbin for your machine. Even though it appears to fit the bobbin case, if it is the wrong bobbin, it could cause major headaches.

Try a different bobbin. Try different thread.

Also check that the bobbin thread is wound smoothly and turning the correct direction in the bobbin case. Make sure the thread is threaded through the bobbin tension properly.

AVOID old and inexpensive, bargain bin thread!

There could be a nick or burr somewhere that is catching the bobbin thread and breaking it.

Try loosening the bobbin tension a bit. It could be too tight, especially if the bobbin thread is pulling the upper thread down to the underside of the fabric.

There could also be something wrong with the bobbin case itself that may be resolved by trying a new bobbin case (or borrow one from a friend, etc.)


Dealing with Lower Thread Breaking Sewing

Bobbin Thread Breaking How to Loosen Bobbin Tension

Posted on Nov 11, 2016

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1 Answer

Thread jams and breaks on my Husqvarna #1 machine. Thread looping around bobbin case


This likely is related to thread tension. You might increase that adjustment a bit higher than the book settings. If that does not fix the problem, here are some additional considerations?

https://www.thesprucecrafts.com/fixing-bobbin-thread-bunching-looping-tangling-2978069

Thread Breaking Bunching Looping and Tangling All Problems ONE SOLUTION...

Sep 08, 2018 | Husqvarna Sewing Machines

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Buttonhole


The needle thread breaks
1. The needle thread is not threaded properly
2. The needle thread tension is too tight
3.the needle is bent or blunt
4. The needle is incorrectly inserted into the needle holder
5. The needle thread and the bobbin thread are not set under the presser foot when starting sewing
6. The threads were not drawn to the rear after sewing
7. The thread is either too heavy or too fine for the needle
Bobbin thread breaks
1. The bobbin thread is not threaded properly in the bobbin holder
2. Lint has collected in the bobbin holder
3. The bobbin is damaged and doesn't turn smoothly

Mar 13, 2015 | Sewing Machines

1 Answer

How to adjust bobbin case for proper movement.


  1. Using a doubled piece of fabric similar to what you have in mind for your project, sew a seam on the diagonal-pulling the fabric on the diagonal to break the threads. (Ideal tension would either break neither thread or break both threads. So, a single breaking thread signals that the tension needs adjusting.)
  2. Snap out the faceplate to remove it & to gain access the bobbin area below the sewing needle.
  3. Remove the bobbin case & bobbin-lifting the hinged latch that you would to wind a new bobbin-leaving the bobbin in the case. (You need it in there to feel the tension as you adjust it.)
  4. Using a small screwdriver, very slightly turn the screw on the side of the bobbin case clockwise to increase tension; counterclockwise to decrease tension.
  5. Pull the bobbin thread while you hold the bobbin in its case & feel the thread's tension. Too tight of tension would prevent the thread from dispensing (& possibly break), but too loose of tension would allow the bobbin to fall out of its case.
  6. Return the bobbin case to the sewing machine & close the faceplate.
  7. Repeat this whole routine from Step One on the doubled fabric. Stitching should run along both the top & the bottom in the same way-locking in the center. A diagonal pull of the fabric should show which thread(s) break(s). Repeat Steps Two through Four to only adjust the screw aside the bobbin case in order to allow the threads to lock in the center of the fabric with both threads having the same break or no-break result.
25300611-iv4burzhkawezvl2jbah1xae-1-1.jpg

Nov 29, 2014 | Singer 2732 Mechanical Sewing Machine

1 Answer

I have a hyundai 8 stitch sewign machine been working brillant but last night it kept missing the tread and the thread breaking or jabbing . today looking at it i see when it jabs the Bobbin Case Inner...


The top thread breaks

1. the needle thread is not threaded properly

2. The needle thread tension is to tight

3. The needle is bent or blunt

4. The needle is incorrectly inserted

5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew

6. the threads were not drawn to the rear after sewing

7. The thread is either to heavy or to fine for the needle

8. Try a different spool or cone of thread


Bobbin thread breaks


1. There is a right way & wrong way to insert the bobbin in the case --when you insert the bobbin in if it doesn't stitch correctly turn the bobbin over see if that helps or bobbin case is not inserted correctly


2. Lint has collected in the bobbin holder


3. The bobbin is damaged & doesn't turn smoothly


4. Lower thread tension is two tight

if the sewing machine has a top loading bobbin, you may have to have the sewing machine checked to see if there is something wrong with the bobbin case or the hook and hook race.
I suggest try a new needle--one for the fabric being sewed
also try another bobbin
rethread the sewing machine top and bobbin, using every thread guide.

Aug 21, 2013 | Sewing Machines

1 Answer

How do i fix my sewing machine underthread keeps breaking


Bobbin thread breaks
1. There is a right way & wrong way to insert the bobbin in the case --when you insert the bobbin in if it doesn't stitch correctly turn the bobbin over see if that helps or bobbin case is not inserted correctly
2. Lint has collected in the bobbin holder
3. The bobbin is damaged & doesn't turn smoothly
4. Lower thread tension is two tight

Nov 04, 2012 | Sewing Machines

1 Answer

Thread breaking


The needle thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle


Bobbin thread breaks

1. There is a right way & wrong way to insert the bobbin in the case --when you insert the bobbin in if it doesn't stitch correctly turn the bobbin over see if that helps or bobbin case is not inserted correctly

2. Lint has collected in the bobbin holder

3. The bobbin is damaged & doesn't turn smoothly

4. Lower thread tension is two tight

Aug 13, 2012 | Janome Sewing Machines

1 Answer

I just got the Brother LX3125 today and the bobbin thread keeps breaking during sewing? What can I try to fix this?


Make sure the thread on the bobbin is wound correctly. If it is incorrectly wound then it will cause the thread to break as well.

Oct 01, 2011 | Brother LX3125 Sewing Machine

1 Answer

Singer 15 thread breaks and doesn't sew


if the upper needle thread is breaking adjust the thread tensioner if the bobbin thread is breaking adjust the bobbin tension screw on the bobbin case

Feb 16, 2009 | Singer 3343 Mechanical Sewing Machine

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