Question about Janome Harmony 2039 Mechanical Sewing Machine

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The underside of the stitches are very loopy looks okay from the top side but the threads keeps catching underneath and jamming up the machine.

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Adjust thread tension--try just half-turn, test, and keep using small increments until you achieve desired proper stitch.
Try threading needle and/or bobbin.
Remember to check size of needle and weight of your fabric.
Make sure you insert new needle that may have become bent or dull, and that it is all the up as far as you can push it before tightening needle bar clamp.
Use correct presser foot for pattern selected.
Sometimes it's possible you need more pressure on the presser foot. To accomplish this, turn the regulator dial (some machines are designed for gentle push rather than a turn). Always try small increments...test..when you acquire desired results, write down your "fix" should you encounter same problem 6 months down the road.
Jimmy

Posted on Mar 31, 2012

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Looping thread underneath is a top thread tension issue...
I have written a 5 page illustrated Tutorial on overcoming this problem....HERE
http://www.fixya.com/marketplace/servicepage.aspx?srvid=17197&ctgid=164&brdid=0&prdid=0&smid=23884&mthid=1&mpsaugid=541e3da8-c9d3-4504-9da5-f8ed5ebb8fcf

Posted on Nov 28, 2011

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Sounds like the bobbin is in backwards. Usually the bobbin thread is supposed to come off the bobbin in a counter-clockwise position going under a tension bar of somesort

Posted on May 28, 2010

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2 Answers

Model 525B. Why is bottom stitch loopy and the hand wheel and needle jam?


try a new needle

try adjusting the top thread tension to see if that helps the bottom loopy stitch

Jan 10, 2016 | Janome Sewing Machines

1 Answer

What causes loose, loopy-looking stiching on the underside of the fabric?


Rethread the machine. Its almost always caused by poor quality threads or misthreading.

Aug 25, 2014 | Sewing Machines

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Singer 4411 sews fine forward and reverse in straight stitch, in zigzag top thread looks fine on top, but all loopy underneath and will only reverse stitch 1 or 2 zigs or zags


check that the bobbin underneath has the same thread as the upper bobbin and that you push all the way on the lever when sewing back and also, go full speed as this happened to me and that was my mistake. Hope this will help you :)

Aug 11, 2014 | Singer 4411 Sewing Machine

1 Answer

Janome 5900 sewing backwards!


Most likely, the bobbin thread is not in the bobbin tension. Rethread the bobbin and try again.

Loops on top of the fabric almost always mean too little tension on the bobbin thread; loops on the underside almost always mean too little tension on the top thread. Just backwards of most people's first guess. See http://www.picturetrail.com/sfx/album/view/22521551

Jan 18, 2014 | Janome Sewing Machines

1 Answer

My machine is a Singer Inspiration 4210. My stitch on top looks fine at first glance but it is birdnesting underneath. What should I do to correct this?


Check your top tension. It sounds like it may be too loose or the bobbin tension may be way too tight. Most likely it is the top tension that is incorrect though. The TOP tension effects the bottom side of the stitch and the bottom tension effects the top. If the top tension isn't tight enough it won't draw the thread up through the top side taunt enough and the excess underneath makes a big loopy mess.

Jul 29, 2011 | Singer Inspiration 4210 Mechanical Sewing...

1 Answer

The thread underneath when sewing is too loosed


Usually thread too loose on the bottom is caused by the upper tension being too loose. The top and bottom tensions work together with the top thread making the underside of the stitch seem too taunt or too loose and the bobbin thread causing the top side of the stitch to be loopy or too tight. Select a large zig zag stick and sew a couple of inches. Then examine the stitch. It should look identical on both sides. Look to see which side is drawn too tight, the zig zag being smaller on that side with threads from the bottom threads pulled through. Then adjust the two tensions so that they make a uniform, identical stitch.

Also, when the bobbin tension is right you can hold the bobbin dangling by the thread and it won't spool out to the floor but will let loose a bit with a slight flick of the wrist. Too loose it will just spool out. Too tight and it won't drop at all. When you get that set right then do the above zig zag test to see where the top tension should be set.

Mar 02, 2011 | Sewing Machines

1 Answer

Underside of seam big loose loopy stitches, top side thread breaks periodically


When you thread the machine always lift the presser foot first.

This opens the tension and allows the thread to properly enter and then guided according to the tension setting.

When you thread a sewing machine with the presser foot down, the tension is closed and the thread cannot be guided though this device as intended and the result is thread not being fed through to the needle as it should be.

It looks like a bobbin issue, but is usually not.

Open the needle plate and bobbin and clean this area and the feed dogs from time to time to remove lint, which also can cause improper stitching.

Feb 19, 2010 | Necchi Sewing Machines

1 Answer

THREAD GET BUNCHED UP UNDERNEATH THE FABRIC, THE STICHES SEEM TO BE INCOMPLETE THE TOP LOOKS GOOD THAN I TURN IT OVER AND THE THEAD IS BUNCHED AND LONG LOOPS OF THREAD ARE LEFT. THANKS LOU


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?


Robbie

Jan 27, 2010 | Singer Sewing Machines

1 Answer

The top thread is really loopy on the underside of the fabric, sometimes it misses a stitch, sometimes, the upper thread breaks, and it often gets so tangled underneath that the machine won't feed.


Your tension is way too loose on top or too tight on the bobbin. Try adjusting the top tension one number at a time until you get it right. (Only adjust the bobbin tension as a last resort). Also you could have different thickness of thread in the bobbin than on the top or are sewing a very heavy fabric. Try adjusting the tension with same thread in both bobbin and top and use a normal weight fabric until you find the right tension to get you back to a normal stitch before going to a heavier fabric or thread.

Nov 19, 2009 | Craft Master 4300 Mechanical Sewing...

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