Question about Janome 4623 Mechanical Sewing Machine

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Thread is knotting up on bottom of fabric causing it to stop

I have a Janome 360 Embroidery Machine. The thread keeps knotting up on the underneath side of the material causing my machine to stop. It was just serviced.

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2 Answers

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  • Janome Master
  • 7,365 Answers

1.check the needle & see if it's bent--if so replace
2.lay the needle on a flat surface & roll the needle over if it doesn't roll true replace
3.check for blunt needle-if needle makes a popping sound when needle penetrates fabric
4.needle is not all way up in holder
on my mechanical sewing machine sometimes the threads come off the take up lever, that causes the thread to bunch up under something I'm working on
also check thread in bobbin

Posted on Jul 29, 2010

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  • Contributor
  • 25 Answers

Always bring your thread to the top and hold before starting. Or make sure that your top thread is threaded properly as it sometimes jumps out, this causes bird nests underneath.

Posted on Apr 01, 2015

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Related Questions:

1 Answer

I have mc9900 janome when trying to embroidery on t-shirt material threads bunch up in back and I end up with holes in shirt


Are you using a fabric stabilizer to prevent the t-shirt fabric from stretching?

Also, be sure to Always Raise the presser foot when threading the top thread. Knots could be bird nests.

May 08, 2017 | Janome Sewing Machines

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Machine will not look stitchesw also bundles up bottom thread


increase the needle thread tension as it indicates that the tension is not tight enough

Feb 26, 2017 | Sewing Machines

1 Answer

Why doesn't the bobbin thread low message show (although setting on 2) and machine doesn't stop when no bobbin thread?


Um, why would the technician only do half the job???

Could be that the bobbin sensor is dirty. Most likely covered with lint or loose thread.

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Oct 13, 2016 | Janome 11000 Memory Craft Special Edition...

2 Answers

What am I doing wrong when the stitching on top of the material is ok and straight and the backside is knotting?


wrong bobbin tension , but amazingly its actually easier to adjust the top threads tension to compensate for it , use your tension knob to slowly adjust , try an inch , slowly adjust try an inch , and so on to get a top and bottom thread tension to match , this will need to be adjusted for each major change in fabric (aka , knits to woven )

Aug 17, 2016 | Sewing Machines

2 Answers

Why does it knot up underneath?


If your machine is creating a mess of thread under the fabric, the upper thread tension is too loose and is causing what is called "thread nesting" or "bird nesting." Tighten the upper thread tension (righty-tighty) and test. Keep adjusting until the upper thread and bobbin thread meets in the middle of the fabric.

You might also try this method as some machines will create thread nests when the first stitches are made:
How and Why to Bring up the Bobbin Thread

https://www.youtube.com/watch?v=jZws5pT1Ics



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Aug 29, 2015 | Sewing Machines

2 Answers

Bobbin thread shows on embroidery pattern


The bobbin thread is being pulled too hard by the top thread. The idea is to get an even pull similar to a tug of war. When it is even the thread will form a knot in the middle of the fabric.
To fix this so the top thread isn't pulling too hard lower the tension of the top thread. This should fix it.

May 08, 2015 | Janome Memory Craft 10000

2 Answers

Having difficulty with free motion machine embroidery on my Janome Mystyle 16, top thread keeps breaking. What can I do to stop the thread from breaking? Plus the stitching is very erratic,any ideas?


1. Set up for regular sewing (not embroidery).
2. Adjust the tension of the bobbin and the top thread so that you have a nice straight stitch.
3. Check your thread quality. Is it fuzzy or have small trails sticking out. No Walmart thread allowed. Only top notch embroidery thread allowed.
4. When you've been successful with the thread and tension go ahead and set up for free arm.
5. Sew free arm but remember machine has to keep up with you. If you go too fast you will be pulling the thread and probably will break the thread.
6. Your erratic stitch is caused by the speed at which you are moving the hoop. Going fast; then slow is going to make a long stitch and then a short stitch, etc.

Apr 03, 2015 | Janome Sewing Machines

1 Answer

Why is bobbin thread showing through on pattern


you need to loosen the top tension. if you notice the tension is too loose on top and bottom at the same time then go ahead and tighten the bobbin tension a small amount. then you can adjust the tension of the top. if the top thread tension is too tight the thread from the bobbin will penetrate through. the opposite is true. if the top is too loose then too much of the top thread will penetrate the fabric underneath. remember to get the tensions between the top tension and bobbin tension equal so the knot will end in the middle of the fabric.

Nov 14, 2014 | Janome Memory Craft 9000 Computerized...

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