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Home and Garden > Repair > Machines > Sewing Machines on July 30, 2011

Adjusting the Tension on Your Sewing Machine

Repair person sewing on a machine.You just finished sewing a seam only to find loopy loose stitches instead of a nice neat line of tight stitches. Does your thread constantly break? The problem is probably with the machine's tension. This is a guide about adjusting the tension on your sewing machine.
     

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Adjusting Sewing Machine Tension

I have a problem with my sewing machines. I have 2 different brands, different ages, but the same problem with both so I'm sure it's me and not the machine.

Here's my problem. The tension keeps being so tight it breaks the thread. Also, the thread keeps getting all tangled up in the bobbin area. Can anybody tell me what I'm doing wrong?

Since I'm sure it's me and not the machine I refuse to buy a 3rd one. Plus I took both of them in last year for repair and the first time I went to use them I had the same problem. So, it's got to be me.

By Cricket from Parkton, NC

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Most Recent Answer

By kfogeltanz 03/13/2010

It definitely sounds like you have your machine threaded incorrectly. I do some sewing, and my parents own an upholstery business. This sounds like improper threading vs tension.

Using Upholstery Thread in a Bobbin

Can you use upholstery thread in the bobbin? I did and the underside of material is loopy. I tried adjusting the tension, but it didn't get any better. I have a Brother sewing machine, model XL-3022.

By Julie R.

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By frugalsunnie 03/05/2012

Most domestic sewing machines are not designed to handle the heavier upholstery threads in either upper or lower parts of the machine. Check your manual and the manufacturer website to see if your machine can sew with the heavier threads, and on the heavier weight fabrics.

If your manual and manufacturer indicate your model should be able to handle the tough stuff, you may need to use a different needle (find the information on which needle size to use on which fabrics in the manual), and you may need to put less thread on the bobbin than you would if using a lighter weight thread.

You may also need to adjust not only the upper tension, but the tension on the bobbin case. That info will also be in the manual.

Another thing you might try is a thread designed for heavy duty work on a domestic machine. Look for the words 'heavy duty' that aren't combined with the additional word 'upholstery'. If you are lucky enough to have a sewing centre near by, ask one of the staff for advice.

Be sure to use thread that is the same content as your fabric-for example cotton thread on cotton fabric, polyester on synthetics. Using the wrong content can cause tension (pun intended:) problems, and can also cause the stitching to break if using cotton thread through synthetic fabrics. If using polyester on cotton fabrics, the thread can cut through the fabric leaving behind a rather neat scissored look to the tear.

Adjusting the Tension on a Serger Sewing Machine

I have a Babyloc Imagine serger that needs a bit of adjustment. The overlock is folding over the fabric and the tension is too tight. Does anyone know how to adjust the tension on this serger? I have tried everything and hate bringing it to a center; they charge so much.

By Rose from Malvern, PA

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Adjusting the Tension on a Janome Sewing Machine

I have a Janome 423s. The bobbin thread runs along the bottom of the material. What is causing this? I have tried fixing it but with no luck.

By karen65ae from UAE

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By phyllisbarton 09/22/2010

The top tension is too loose. It may not be working correctly. Also check to see if the machine is threaded correctly. Sometimes the thread is not properly seated in the groove between the two disks.

Adjusting the Bottom Tension on Brother Sewing Machine

I have a Brother XL 3022 sewing machine. The tension on the bottom is loopy. Someone mentioned bobbin tension, but I don't know where on the machine it is.

By Lesley

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By frugalsunnie 03/08/2013

First of all, download a free copy of your sewing machine manual here:
http://www.brother-usa.com/ModelDoc ... Users%20Manual/UM_XL_3010_EN_239.PDF

Now, look on page 2 to locate the tension adjustment knob on your machine-it's that wheel looking thing sticking out of the top of the machine a little-see it over there on the left of your machine near where the thread feeds down to the machine needle? That's your tension knob (the manual calls it a dial, the terms are pretty much interchangeable).

Next, look on page 19 of that manual for complete step-by-step directions for adjusting your sewing machine tension correctly including a diagram showing how to decide what is wrong and how to correct it.

Finally, based on what you are describing in your posted question, it sounds as though you are seeing loops of thread around the line of bottom thread stitching (better known as the bobbin thread, btw).

I notice that the Brother manual describes stitches as 'locks' which can be a little confusing but if you stare at those pictures and read the text several times you'll see that your problem is that your tension is too loose.

Note: The illustration for correct tension appearance is on page 20. It's a lot confusing because between the directions for increase/decrease and the illustration there is the bit about bobbin tension adjustment.

So you'll need to dial that tension knob to a higher number. Doing that will increase the tension on the threads as they pass through the tension discs inside the machine.

If the loops were showing on the top you would need to loosen (or 'decrease') the tension by dialing to a lower number.

Be sure you are using the right size needle, and run a test strip (or several) on the fabric you are trying to sew until you find the right tension for that fabric-needle-thread combination. Write that down on the pattern (if you are using one) so that you can restore those settings if you use my bonus tip below and therefore change the settings.

In addition to examining for loops and puckers, do the 'snap' test by holding the test strip in both hands and pulling the strip at both ends in a 'snap' motion. If the thread breaks it means your tension is too tight so you'll need to loosen (decrease) it.

Remember-to tighten (increase) you go up a number, to loosen (decrease) you go down a number:

Increase-up
Decrease-down

BONUS TIP-when sewing a zig-zag stitch, for example to finish a seam or when sewing knits on a machine without a specific knit stitch setting, LOOSEN THE TENSION one number down from whatever you are using for the straight stitching. Doing so means your seam finish won't pucker or break:)

OH! Never-ever-never try to adjust the tension anywhere but at the dial atop your machine. The bottom tension (better known as bobbin tension) is set at the factory and only in extremely rare situations does it require adjustment by removing the bobbin case and turning a screw - DO NOT attempt. It's just too easy to over-turn that tiny little screw and then too easy to forget to set it back to the original position for the next project. See the manual page 19 for more on bobbin tension.

Archives

Here are archived discussions related to this page.

Adjusting Sewing Machine Tension

I need some help with my new small sewing machine my mum bought me for Christmas. I'm having trouble with the tension in the bottom bobbin. How can I get the right tension when there is no guide for the thread to even out on the bobbin when you start a new one, I just use my finger?

As when I was sewing, the bottom of the material had small loops and the bobbin thread was not taking up in sections. I've tightened the tension guide for the top one but that doesn't seem to help. Can anyone help me please as I don't want to give it up and lose interest? I hope this makes sense.

Thanks,
Lambchop from Western Australia


RE: Adjusting Sewing Machine Tension

I used to know more details on how to do this but I'll give it a try. You could also call your local sewing machine retailer for help.

The thread in the bobbin makes loops on the bottom of the material. You do not want loops that stick up, that means you don't have enough tension. Nor do you want loops that pull too much, that means you have too much tension. You want loops that are firm and are flat on the material. If your bottom thread is breaking you might have too much tension in the bobbin. Release a little tension.

You might also be using cheap thread. I compared thread from the dollar store and from a sewing store. The sewing store thread was much thicker and stronger, and well worth the extra money (1.75 us for 1 spool). I could break the dollar store thread with my bare hands.

Likewise with the needle, it makes loops on top of the material. You want firm, but not puckering loops. (01/17/2007)

By bulrush

RE: Adjusting Sewing Machine Tension

It sounds to me like your bobbin tension is to loose. You need to tighten it. Did you get a manual with your machine? If so, look under "tightening bobbin tension". There's a little screw on the bobbin case, turn it to the right a little at a time. Sew a seam and check the stitches after each tightening.

I hope you understand this, maybe there is someone out there that can explain this to you better than I can. I hope I've helped. (01/17/2007)

By msettamae2

RE: Adjusting Sewing Machine Tension

I agree that you should check in the manual that came with the machine. If the machine was not purchased new and there was no manual, do a search online for the brand of machine that you have, and you might be able to find a manual to order, or one to download. The screw on the bobbin casing, as stated in the other post, is probably what you need to adjust, depending on the brand of machine. (01/17/2007)

By teachpad

RE: Adjusting Sewing Machine Tension

One thing I've discovered with my Bernina is that I can't usually use thread from the same spool on the top and in the bottom. I have tension problems - discovered the solution by accident. Give that a try and see what happens. (01/18/2007)

By Marlene

RE: Adjusting Sewing Machine Tension

Have you tried to load your bobbins with more even feeding, even if you have to use your fingers to help it out? Try to do it evenly, because it can cause unequal bobbin threading sometimes if unevenly tight on the bobbin.

Also, you just MIGHT have the bobbin in backwards. Try reversing it if you cannot find the manual or help otherwise. I've taken machines completely apart and replaced every single piece in cleaning and oiling, etc. but it's been over thirty years since I did it. The manual on a similar model might work, if all else fails. You might find one on the Internet. God bless you. : ) (01/20/2007)

By lyndagayle62

RE: Adjusting Sewing Machine Tension

Hello to everyone who helped me with your tips. I found out that the bobbin was the wrong way around and I didn't know there was a right and wrong way, but there is. I also found afterward I have to sew in short spurts as the top thread gets caught around the needle arm and gets tight to the point of stopping the machine and then it knots up on the back. It took me all this time to work it out and I nearly gave up and passed the machine to my partner to use as spare parts, that would have been a shame! So thank you once again to everyone who replied.:-) (01/30/2007)

By Lambchop Western Australia


Adjusting the Tension on a Serger Sewing Machine

I received a serging sewing machine for Mother's Day and I finally took it out to use. The tension is all goofed up and the instruction book's tips are not helping. The stitches are all loopy like is was crocheted instead of serged. Has anyone else found a solution to adjusting tension on a serger?

Judy from Winfield, IL


RE: Adjusting the Tension on a Serger Sewing Machine

I suggest that you first go to the place you purchased it from and have them help you. My store gave free classes with the purchase of any new machine. If you have no luck you can always contact the Better Business Bureau.

Also there are other books on sergers, however your book that came with the machine should be all you need. Are you changing all the tensions or one at a time? The side that's loopy needs to be tightened. I hope this has helped some. Judy (09/12/2006)

By bjptl

RE: Adjusting the Tension on a Serger Sewing Machine

My serger is set on 4 all the way across. I hope that helps. (09/13/2006)

By June

RE: Adjusting the Tension on a Serger Sewing Machine

Look at all your threads, one by one. Check to see if each is totally in the disk at the top. Be sure all threads are threaded in their proper places. Is the needle new? Are all threads of the same weight? These are things you can try. I have 4 sergers and they all give me trouble from time to time. With lots of patience I am able to get them working.

Loopy stitches mean it's too loose. But the stitches will be loopy by themselves (no fabric). Is your machine new? Have you checked the FAQ in the book? On the website of the make of machine? There are lots of things you can try, but I understand your frustration. (09/13/2006)

By Cathy

RE: Adjusting the Tension on a Serger Sewing Machine

I've had to check the website of the serger's manufacturer for their online instruction manual. They are usually more complete than the manual that comes with the serger. I recently bought a 5 thread Singer serger and I was having a very difficult time threading it. The online manual was a life saver. (09/28/2008)

By Nicki


Adjusting Sewing Machine Tension

How do I go about adjusting bobbin tension on a Singer sewing machine?

By Lee542 from Easton, PA


RE: Adjusting Sewing Machine Tension

If you take out the bobbin case you will see a tiny screw on it where you pull the thread through, you simply turn that 1/4 a turn and try sewing again to see if the problem is fixed. Are you positive the top tension is right? Unless someone has messed with a machine the bobbin tension is usually not the problem.

I found a website to help explain it better than I can. Just remember that once you start messing with the bobbin tension it's possible to get things really messed up. If you do change the bobbin tension I would make a mark where it currently is on the racer (bobbin case) so it can be set back to where it was.

You don't mention what problem you are having, that can be important, as well. If the fabric isn't passing through smoothly it may have nothing at all to do with the tension. There is a "feed dog tensioner" on all machines that allows you to adjust the the amount of space between the feed dog and the plate and if that is too tight it can keep the fabric from passing through smoothly.

Here is a website I found that can explain the tension to you.

essortment.com (10/06/2009)

By wolfbytez

RE: Adjusting Sewing Machine Tension

I have a Singer sewing machine also, mine was given to me second hand with no manual. I Googled "Singer sewing machine manual" and found on their website a printable version. It works for almost anything that you need a missing manual for. There are several websites that do nothing but. All free by the way. Hope this helps. (10/07/2009)

By nooneshomeingotham


Adjusting the Tension on a Serger Sewing Machine

After many tries I cannot adjust the tension dials on my serger (new). On the underside, the loops are too big, any help?

By Deb2009 from Flowood, MS


RE: Adjusting the Tension on a Serger Sewing Machine

Increase the tension the for the bottom (underside) looper a little at a time until it is the correct tension (this decreases the slack on the bottom looper), and then lastly increase the top looper tension a little at at time until its perfect.

You can practice this by re-threading your machine with a different color thread for each looper to make it easy to see where you need to increase or decrease the tension until you get the hang of it. (10/30/2009)

By kimsukie

RE: Adjusting the Tension on a Serger Sewing Machine

I have found that after hours of frustration with this problem, sometimes my needle is the wrong size/kind for the material/thread, or I need to just change the weight of my thread. Call your local Singer store and get this stuff right first before you spend anymore time on tension knobs. (11/05/2009)

By @homew/2

RE: Adjusting the Tension on a Serger Sewing Machine

Check the manual. Here is why. I borrowed a serger from my school to use on a project and met with great frustration. I finally discovered that the manual (it is a Singer Serger) was wrong! The colors of two of the dials were mislabeled in the book so I was actually adjusting them contrary to the direction they should have been going.

I discovered this only by going to other sources to understand how a serger works. I spent hours. Once I discovered this, I crossed out the colors listed in the manual and changed them to the correct ones, and now the directions work perfectly. By the way, at the beginning of the manual, the colors were correct, it was only on the pages that described how to make certain stitches and in the troubleshooting pages where they were transposed. (11/07/2009)

By itsbarbara

RE: Adjusting the Tension on a Serger Sewing Machine

Well first you have to identify which thread on your fabric corresponds to what thread tension regulator. Then you can adjust the regulator based on the looseness of the thread.

Check out this video hope it helps.

http://www.sewingmachineryrepair.com/forums/index.php?topic=8.0 (01/06/2010)

By tizank

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