Question about Singer Sewing Machines

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When using my Singer overlocker 14t554s the lower looper thread seems to tighten and "jam"after about 10cms. Re threading and stating again the same thing continues to happen. Any solution?

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  • wendy_parson Sep 01, 2010

    Hi, thanks for replying so quickly, I plan to set up my serger this evening and spend some time with it. I had a look at the Singer site and as you say it is not very helpful. I am in Melbourne Australia and I found your site after Googling Singer sergers. Thanks, Wendy

  • Anonymous Mar 27, 2014

    Do you have a video demonstration for threading the lower looper on this machine

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Here is a link to Singer,however it doesn't seem very helpful.I saw a couple of your problem under the FAQ section.On my wife's machine which was a Brother,you could adjust the bobbin tension by sliding a plate on the bobbin metal jacket/casing where the thread ends up coming out.The hole/slot size could be adjusted and required very little movement and may not have a wide range of motion.Play with it and see if you can get it to do that or look and see what you find.I do not really know how to describe it but I was always doing the maintenance on it and she showed me stuff like that.Here is the link.If you do not get anything out of either,just comment back to this post and I will get an auto link.Good luck! Greg cms...Are you in Canada or Europe or something?
http://www.singerco.com/resources/

Posted on Sep 01, 2010

  • Greg McCarthy Sep 01, 2010

    Now that I think about it,there was a small screw to adjust the bobbin opening.The screwdriver was a Phillips and is also small.They are called jewelers screwdrivers.I was in Perth a long time ago.I thought Australia was very nice,clean and beautiful.I also bought a small flag about 2 feet by 1 foot.

    Your welcome,Greg

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1 Answer

Singer 14T967dc serger runs but does not stitch


Hello Laura

Make sure that the lower looper thread is in front of and over the upper looper thread when threading the serger; when threading for overlocking.

Please let me know how this worked out for you
Happy serging

Feb 24, 2017 | Singer Sewing Machines

1 Answer

Bernina 335 serger won't sew/overlock. carefully rethreaded the serger but that hasn't helped.


The 335 has a two thread chain stitch (stitch type 401), and the overlock side (right needle side), is a three thread plain overlock. If you are describing the plain overlock as the problem, I would first suggest the following in re-threading:

1. Thread the upper looper
2. Thread the lower looper
3. Thread the needle last (important)

If the needle threaded, you cannot re-thread the lower looper without breaking the thread.
In order to thread the lower looper, the lower looper must pass by the needle thus picking up the needle thread. So, instead of threading the lower looper thread underneath the needle thread, the looper would be threaded on top and cannot sew without breaking the thread.
Make sure that the threads are bedded between the tension disks. Check this by stretching the thread fore and aft of the tension disks as well as visually noting that the threads are not accidentally threaded behind the disks. You can also loosen the tension disks when threading so as to allow the threads to bed deeply between the disks.
Please reply with your observations.

Sep 27, 2015 | Bernina Sewing Machines

3 Answers

Thread lower looper on Elna 624 DSE. I have manual, still can't do it.


are you using a wire threader or tweezers to thread up? also some overlockers have a slide mechanisim on the looper so you can get to the eyelet, not familiar with this model but your manual should show the threading method. I usually turn the flywheel so the lower looper is all the way to the left and thread up the lower thread carrier, then turn flywheel again to move it to the right, then using the wire threader, I hook the thread from the left and bring it over to the right side, then thread up the looper eye. Hope that makes sense to you

Feb 21, 2015 | Elna Sewing Machines

1 Answer

Thread breaking at loupers on overlock machine singer


If it's the lower looper thread breaking, the cure is to unthread the eye of the needle(s), rethread the lower looper, then rethread the needles. Sergers have very specific internal crossings that are easiest to do if the various parts are threaded in a particular order. Typically, you thread the upper looper, then lower looper, then the needles. If you try to deviate from that without knowing exactly what you're doing, it tends not to work well.

In general, most serger troubles, especially for beginners, trace to minor misthreadings. It's easier, in my opinion, to rethread the entire machine from scratch than look for the minor error that's catching you up. And you learn the threading pattern well as a special bonus. <g>
If it's not cureable by rethreading a couple of times from scratch, the next thing to do is put in new needles, right way around, and rethread again.

Feb 08, 2014 | Singer Sewing Machines

1 Answer

What setting are the three threads set on for a rolled hem on a singer ultralock l4sh654 and what is the lever by the plate for?


Rolled hemming on any overlocker is usually achived the following way. Right hand needle only.
Blade over to the right usually to cut wider than normal but you can vary this to suit the fabric and stitch width you want.
Thread in this needle and the upper and lower loopers. If you can source any, use woolly overlock thread in the upper looper, this fluffs out when not tensioned and covers the fabric to give the look of solid stitching. Change upper looper tension to about 2 and lower looper tension to about 6 or 7.

The lever by the plate is usually to control the little stitch finger where the stitches are formed, move it backwards and it should move back towards you?? If this happens, then you want it in the retracted (towards you) position for rolled hemming so the stitching is much smaller and the fabric can roll. Normally this stitch finger holds the fabric firm for the loopers to form the stitch over for your normal 3 or 4 thread overlock.

Now test stitch and see how it looks. Tighten the lower looper thread so it lays right beside the needle on the underside. You may need to then tighten or loosen more the upper looper, you want the upper thread to wrap all the way around to the underneath against the lower looper thread and needle.

The cut edge of fabric should roll to underneath inside your seam. Once you've got this happening, turn the stitch length down to 0.5 or so to close it right up tight. This uses heaps of thread so I usually test everything else, then close it up at the end to minimise waste.

Hope this makes sense, good luck.

Sep 22, 2011 | Singer 14SH654

1 Answer

I am trying to do a rolled hem using a singer ultralock 14sh654. Do I disengage the knife? The stitches are uneven and some are quite loose no matter how much I adjust the tension. I am positive I...


no, you need the blade in place and cutting to give an even cut fabric edge. Set up for a three thread using the right hand needle, take out the left hand needle. move blade over to the right so it is cutting wide. Most overlockers there is also a thread finger you need to change on the foot, or a little lever you flick to move this finger forward into the stitching area. Check this on your manual as each make is a bit different.
If you can source it, put wooly nylon thread into the upper looper (knot it onto existing thread and just chain it through, the knot should go through the looper eye fine). Now turn the tension on top looper down so it is looser and tighten up tension on bottom looper, so needle 5, top looper 2 and bottom looper about 7.

Now test serge, the fabric cut edge should be wider than the overlocking seam so the fabric rolls under inside the stitching. Adjust the two looper threads so that this is happening, you want the bottom looper thread to nest right up against the needle stitch and the top looper thread to wrap all the way around too.

Once you've got this happening, turn the stitch length down to 0.5, to close the stitching right up. On some fabrics you'll need to adjust the differential feed too if the fabric is "waving" a bit.

Uneven stitches or sometimes loose when serging could indicate that one of the tension devices is faulting, so if this machine is not new and its doing this, it could need a service. Can you get a regular smooth three or 4 thread seam out if it???

It is always good to just recheck the threading path, make sure the thread aerial is up and that a thread hasn't got caught back on the thread stand somewhere if you're getting something wonky happening, threads stream off overlocker cones through the machine so anything wrong in the thread path will throw off the stitching.

Jun 25, 2011 | Singer 14SH654

2 Answers

I have a bernina overlocker and whenever I use it the lower looper (marked in red) thread breaks. How can I fix this? It was serviced yesterday and when other people used it before me it worked fine!


Then it's one of two things. First try setting your lower looper tension on 3 and see if that works. If not set it back on 4 and cut ALL your threads and re-thread the machine STARTING with the UPPER looper, then the lower looper, then the right needle, last the left needle if you're sewing a 4 thread overlock stitch. Make sure the threads aren't twisted in the thread guide. Make sure the lower looper thread is OVER the elbow on the upper looper and over the upper looper thread. Let me know if this works. We'll work until we get it fixed!

Sep 14, 2010 | Sewing Machines

1 Answer

Singer Overlocker/Sergers require particular threading order. If that does not help you may as I did have to take it to an Authorised repairer. It has to be a Singer Authorised as they have done training...


Sergers thread upper looper first, lower looper second, right needle third and left needle last in that order. If your thread breaks, CUT ALL THREADS and start from scratch or you will not get a good stitch or your machine may jam. It's probably just a "user error."
Good luck.

Jun 17, 2010 | Singer 14SH654

1 Answer

Singer overlocker


Most likely is the left looper thread is trapping the needle threads.

Remove the threads and start over in this sequence....

Left looper - right looper - left needle - right needle.

If you thread the needles before the lower looper, the needle thread wrapped over the looper will be under the looper thread and will never be free to form a stitch, so the threading sequence is critical.

Jun 08, 2008 | Sewing Machines

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