Question about Singer Sewing Machines

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Bottom thread is still loose even if i try to balance the tension, how do i balance the thread tension?

Bottom thread is still too loose after adjusting thread tensioner

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  • Singer Expert
  • 631 Answers

You bobbin tension CAN be adjusted. First, thread your machine with different colors in the top and bobbin, set your top tension at its default, and run a line of straight, and then a line of zigzag stitches, and compare the results at the top and bottom. You will be adjusting your bobbin to your top tension. If the top tension looks like a straight line instead of stitching and the zigzag looks like "chicken tracks" instead of a zigzag, but the bottom looks like a zigzag, your bobbin tension is too loose.

Remove the bobbin case, and locate the straight-slot screw. There are generally two; one is a Phillips and one is straight--you want the straight one. Leave the other alone.

The rule is "lefty-loosy, righty-tighty." If your stitching displays the above symptoms, it needs to be tightened, so turn 1/4 turn to the right--no more--then test again. You will need patience, but don't turn more than that. It is easy to do, but if you don't do it systematically, you can make things worse, and very slight adjustments can alter the stitching significantly.

Posted on May 11, 2015

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: sudden knotting under fabric

I have an Elna 2005 machine and had a similar but opposite problem whereby the tension up top was too tight - thread wouldn't pull smoothly. I found adjusting the feed dog lever slightly helped the stitches a lot, even though the needle tension up top is no better. Hope that helps! :-s

Posted on Oct 29, 2007

SOURCE: Yet another stitch tension problem...

Thank you, thank you! I just tightened the screw on my bobbin case and that instantly fixed my thread tension problem. How on earth are you supposed to know about the little screw?! I thank you so much for the tip!

Posted on Dec 14, 2007

safenude
  • 124 Answers

SOURCE: euro-pro 464xc bottom tension loose

Welcome to FixYa!

Loose bottom stitches come from the top, not the bottom. Seems weird, but that's the way sewing machines work.

The dial tension should be set at the mid range and make absolutely sure that you have the machine threaded correctly. Both things will cause a sloppy bottom stitch.

Thanks!

If you find my solution helpful, I'd appreciate a FixYa rating....

Posted on Feb 01, 2009

  • 97 Answers

SOURCE: thread or bobbin tension

Thread tension. Beware of adjusting the bobbin screw. Pfaffs maintain their tensions just fine without adjusting the bobbin tension, unless you're using some crazy thick or fine thread. If you must change your bobbin tension, you would be well-advised to buy an extra bobbin case, because re-calibrating your tensions after changing them can be less than fun.

Increase your top tension, and your looping should cease. I normally keep my tension around 4.5. Also make sure you're using a good quality thread, and that there's nothing in the upper tension assemblies. Sometimes a tiny piece of debris can keep the top tension from applying enough tension, so turning the machine off and blowing some canned air in there can help as well.

Good luck,

-R

Posted on Mar 11, 2009

  • 26 Answers

SOURCE: bottom tension to tight

There's hardly any way to significantly adjust the bottom, or bobbin tension. There's just a small, flat spring attached to the side of the bobbin case, under which the thread runs. There's adjustment there. You need to adjust the top thread tension via the small thumbscrew that's against the plates on the top thread tension discs. Increase or decrease tension there until top and bottom threads are equally centered between layers of material.
You can adjust presser foot tension with the knurled nut at the top of the machine. I never had the kind of problem you mention though. I set my machine at about 6 stitches per inch or a little more (max is 5, recommended), and presser foot tension is only heavy enough to pull a single layer of material through.
Hope this helps.

Posted on Jul 13, 2009

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2 Answers

When using retro Singer sewing machine the bottom thread is lose. what shal I do


K McMurdo's answer is correct.
Further: you will need to balance the tension between the top and bottom thread. After LOOSENING (anticlockwise) the screw on the bobbin case with a good quality thread wound on the bobbin. pull it out to see that it is tightened slightly. Put the same thread on the machine and carefully thread up the machine. A very high proportion of bad stitching problems is caused with incorrect threading of the machine. Set the machine tension at a mid point and slowly pull both threads to approximate that the tension is approximately equal on both. Keep the presser foot up while doing this. If the bottom thread keep adjusting the screw on the bobbin case until you get the threads roughly even. You can then try sewing and adjust the top thread until you have the stitch loop bedding in the fabric. It is essential that you have a needle that is appropriate to the fabric and thread you are working with!

Best Wishes, Ray

Oct 24, 2017 | Singer Sewing Machines

2 Answers

Can't get tension adjusted. Top loose, botton thread comes up over top fabric


bottom thread is loose, tighten the tensioner in the bobbin, (you might have to loosen the top to balance.) make sure thread was properly routed.


threading of bobbin sewing machine pictures Google Search




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25906862-jibq41wz0sue1ymkd0te1x10-1-1.jpg

Oct 13, 2015 | Brother Sewing Machines

1 Answer

My top thread is picking and the bottom thread is fine i have tried rethreading and re did the bobbin even changed threads and tried the tension


If the top thread is too loose and the bottom is tight you can loosen the top tension and this should take care of the problem. You may need to adjust the bobbin by tightening if it is still not as pretty as you would like it. Look at my attachment on how to set tension.

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25877855-rwzo1c4hdrhv5nxha3mm1fdb-3-1.jpg

Sep 23, 2015 | Singer Sewing Machines

4 Answers

The bottom thread shows on the top, and the top thread shows on the bottom evenly. Have rethreaded and changed needles. ???


To pull the thread through the material the thread tension for the top and bottom is too tight.
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Apr 17, 2015 | Singer 3116 Simple

1 Answer

The bottom thread on my brother ls-2125 is too loose how do i fix it


The tension may be incorrect, or the upper tension mechanism might be worn or damaged. Have you tried it on all the tension settings ?

Things you should always try when there is a thread problem; make sure the bobbin case area is well cleaned out, lint can cause many problems; try putting in a new needle; try a new spool of thread. Try rethreading the whole thing, a few times if need be.

Check every thread guide to be sure none of them has a nick or rough spot on it that may be damaging thread as it passes by. Change needles often, they get dull and worn and can cause issues. Even a brand new needle may sometimes have a burr in the eye, which will abrade thread and cause a lot of problems. Always have a few new needles on hand to try.

If it's still bunching up underneath after trying all that, the upper tension setting might be too loose. Tighten it, one setting at a time and stitch, check to see if things improve. If there is no setting on the tension dial that will give you a nicely balanced stitch, then it may need a new tension mechanism.

Some machines can be really picky about thread, so using very cheap thread can cause a lot of problems. If you've bought cheap thread, it's not worth the money saved.. buy good thread instead. The cheap stuff might do for hand basting maybe.

Brother has an excellent service department, one of the best I've ever come across, if all else fails.

Aug 09, 2014 | Brother LS-2125 Mechanical Sewing Machine

1 Answer

How to adjust tension on lervia sewing machine


Tension is a balancing act between the upper tension and the bobbin tension. Balanced tension (which is not always necessary) is when the two threads meet between the layers of fabric. Not all unbalanced stitches are a tension problem. You can have loops under the fabric from a failed take up lever, improper clearance between the positioning finger or even a burr or lint. First I check the upper tension. If you can not make the upper tension normal pinching the thread after it comes off the spool will act as a tension device. If this solves your problem then start with cleaning.

You may have lint between the tension discs at the top next to the take up lever. Clean this out with the presser foot up. Next install a new needle size 80 and thread the machine. When you lower the presser foot and pull the thread the spring steel the needle is made of should bend 1/8 of an inch at normal tension. Between 3-5. If this does not happen turn to a larger number on the tension assembly. If this does not deflect the needle as you pull the thread to the left rear of the machine your tension assembly needs repair or replacement.

The bobbin tension is controlled by a spring on the bobbin case or bobbin basket (depends on the sewing machine). This spring can also get lint under it. The lint can hold the tension discs open causing no tension. This may be the problem if you see the lower thread pulling up to the top of the fabric. Normal tension on the lower thread is usually 150-200 grains. That may not mean much to you and you may not have a scale to measure that. One simple trick is to take a wooden clothes pin and glue 3 pennies to it. I then use this as a weight to set the bobbin tension. I clip the clothes pin to the thread and set it on the work bench. Next raise the bobbin case or bobbin basket without touching the thread or bobbin. Then tighten the tension screw on the bobbin case until the clothes pin lifts off the work bench.

This gives you a good place to start on balancing the tensions. Set up a straight stitch at the mid range of 2-3mm long and sew. Turn the upper tension dial to the mid range 3-5 and observe the stitch. If the bottom of the fabric shows too much top thread tighten the upper tension. If the top of the fabric shows too much lower thread loosen the upper tension. I recommend playing with your tensions to learn what too loose and too tight a tension look like. Sometimes we want the upper tension really loose to do a basting stitch. If you want to pucker (gather) you can create a long stitch and play with the tensions. A tight upper tension will pucker thin fabric. You can also gather fabric manually by using a long stitch and a loose upper tension then bunch the fabric together on the loose threads.

After all that it may be easier to take this to your local dealer and ask for advice.
Have a great day and keep on sewing.

Jun 22, 2014 | Sewing Machines

3 Answers

Loose bobbin tension


the bobbin tension is set by that small spring plate that you pull the thread under after you put the bobbin back in the carrier / holder
a very small turn of that screw makes a big difference ob the tension unlike the needle thread tension
mostly the problem ( you never bothered to mention the symptom ) is bird nesting under the fabric which is the needle thread tension not tight enough

Jul 06, 2017 | Brother SE-270D Computerized Sewing...

1 Answer

How to thread the bobbin on a brother vx-810


The sewing on the bottom is loose because you don't have enough tension on the TOP thread. First, make absolutely sure you are threading the machine correctly. Next, while using 2 different colours of thread, tighten the top tension dial one number at a time and then checking the stitching, continue tightening the top tension until the sewing is even on the top and bottom of your cloth.

Apr 02, 2013 | Brother Sewing Machines

1 Answer

I have a Singer 3140, and I have misplaced the book. I need to adjust the tension so that the threads are balanced, but have forgotten the correct procedure.


Get some scrap of the fabric you'll use.

Remember this phrase. Loops on bottom top tension too loose. Loops on top... top tension too tight. (or bobbin tension too loose)

In your case you need to loosen the top tension until you start to see loops on the bottom... then tighten it slightly.


Here's a manual for future reference
http://www.singerco.com/uploads/download/652_288-974-972-244-2405-588-875-1195-3130-3140.pdf

Jul 19, 2012 | Brother SE-270D Computerized Sewing...

1 Answer

Sewing machine


The top tension pulls the top thread up. The bobbin tension pulls the bottom thread down. A balanced tension is an an even knot between the stitches.

If the thread is messy on the bottom, the top tension is non-existent or is too low. The top thread tension dial should be on 4 or 5. Pull the thread out and re-thread the machine with the presser foot up. If it is still messy, perhaps there is a burr on the bobbin case snagging the thread.

Jun 19, 2009 | Singer Drop-In Bobbin 758B-28BH Mechanical...

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