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Janome straight stitch loose

At first my top thread was bunching under the bobbin thread so I tightened the tension. Now my stithces are loose between the stitches and it looks terrible. I am using a straight stitch. I have rethreaded the machine, cleaned out the bobbin case, put in a new needle, changed the bobbin thread, and have oiled the machine. Does anyone have any suggestions for me?

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Re: janome straight stitch loose

I don't know if this is the right answer for any of you, but thought I'd put my 2 cents worth in. Often this can be the bobbin in backwards. It needs to unwind a certain way depending on the machine. I've heard a phrase for this: Mind your p's and q's which means some wind off to the right like a q, others to the left like a p. Mine has to unwind one way then be slipped backwards into a little slot or it does that loose bottom thread looping and bunching someone here mentioned. It seems everytime I get that problem I rethread the top thread 100 times before it clicks again and I remember it could be the bobbin thread. Either your manual will tell you the correct way, or you could experiment and try one or the other. Once you figure out whether you're a p or a q, mark it on your machien somewhere to remind yourself.

Good Luck and Happy Sewing!

Posted on Apr 04, 2009

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Re: janome straight stitch loose

Your bobbin on that machine should look like a letter P thread coming off the top to the left when you put it in. Make sure your top tension is at 3 and when you thread the top of the machine make sure that your foot that you put the fabric under is up before you start

Posted on Jan 21, 2010

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Nov 26, 2015 | Janome Sewing Machines

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When i run a straight stitch, the top of the fabric looks well sewn; the thread on the bottom of the fabric, however, bunches up-it looks nothing like the top stitch.

Is it really the bobbin thread that is bunching under the fabric, or is it really the top thread that is creating loops and "bird nests" under the fabric???

Rethread your upper thread. BEFORE you thread the upper thread, be sure to RAISE the presser foot. This releases the upper thread tension disks so the thread is firmly seated in the tension disk.

If it continues to be a problem, then the upper tension needs to be tightened. Adjust slightly, then test. Repeat until the upper and lower threads meet in the middle of the fabric.


Sep 24, 2015 | Sewing Machines

1 Answer

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

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.

Apr 15, 2015 | Singer Sewing Machines

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

1 Answer

How to controle loose stich

Check he tension on thread and on the bobbin. If you can see THE KNOT ON THE FACE OF MATERIAL then try loosening thread tension on top or tighten bobbin tension so stitch meets in the middle. May take a couple of tries to get it straight.

Mar 07, 2014 | Janome Sewist 525S Mechanical Sewing...

1 Answer

What kind of oil do use on my Janome DC3018 sewing machine? How often should this be done? The thread bunches up under the plate and the bobom Please answer ASAP. My email address is

Hi. Use only sewing machine oil on your sewing machine. You can get it at Jo-ann's, Hancocks, or other fabric/quilting shops--or order it online. Try has an excellent website. NEVER use WD-40 or 3-n-1 oil.

How often you need to oil your machine depends on how much you use it, but generally you'll need to do it for every 8 to 10 hours sewing time.

Check your manual for your machine's oiling ports, but the general rule of thumb is one drop of oil every place metal moves against metal. Don't use oil on any gears you find--use sewing machine grease instead. You can get it wherever sewing machine oil is found.

The most likely reason your thread is bunching up under the fabric is because your top tension is too loose. Here's how to adjust it:

1. Use a different color thread in the top and in the bobbin.
2. Use good-quality thread and a size 12 needle.
3. Hold the tails of the threads out behind the machine as you start sewing. Let go after a few stitches.
4. Sew a few inches and check your stitch. With the different colors, it's easy to see the loose top thread.
5. Tighten the upper tension just a bit.
6. Repeat--recheck--repeat--recheck
7. The tension is right when you don't see any (or very little) of the bobbin thread on top and you don't see any (or see very little) top thread on the underside.

Hope this helps!


Aug 12, 2010 | Janome 2049LX Mechanical Sewing Machine

1 Answer


Hi Lou! This sounds like a tension problem--the tension on the top thread is too loose. Try using different color threads on the top and bobbin, then carefully rethread everything. Stitch a couple of inches and check the underside. If the top stitches look fine and the bottom ones are loose and loopy, and with the pressure foot down, tighten the tension. Move the knob or dial (whichever you have) just a little bit. Sew a couple of inches more, and recheck. Continue to sew and recheck, gradually tightening the tension, until you see little if any bobbin thread on the top or top thread on the underside of the fabric.

Let me know if this helps, ok?


Jan 27, 2010 | Singer Sewing Machines

2 Answers

Wont sew thread bunches up


I think you are threading the top of the machine incorrectly. Make sure that what I'm saying is correct, use two color threads to sew with- and you will see that it is in fact the top thread that is bunching.

This might be a tension problem. Could be the bobbin is not threaded in the case right. First, check the threading of the bobbin and then check the stitch.

Next, adjust the tension on the bobbin case. There is usually a small screw on the case that can be tightened or loosened. I think you may need to adjust it a bit or adjust the top tension knob, just a small bit at a time. It the top does not change the stitch, then go to the bobbin case and adjust the screw to tighten the stitch a little bit more.

Please do rate this solution as FixYa and revert for further assistance.


Jun 19, 2009 | Kenmore Sewing Machines

1 Answer

Bobbin thread bunching

tension is tooooo loose.
slowly tighten
also the pressure gauge at the top should be for accurate fabric thickness

May 30, 2009 | Janome Memory Craft 3000

3 Answers

Won't stitch properly

ever tried adjusting the thread tension control? clean if possible
tighen it more, loose tension adjustment causes loose stitch and tangling of the thread.

Jun 25, 2008 | Janome D'cor Excel 5018

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