Question about Brother Lay-In Thread Serger Mechanical Sewing Machine

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Lower looper thread is breaking - Brother Lay-In Thread Serger Mechanical Sewing Machine

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Is the thread looped around anything?make sure thread is flowing free from spool and is not wrapped around anything 'twice".

Posted on Jun 01, 2010

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One of the threads tears?the second one from the right.


Assuming this is a serger. The second thread from the right would be the lower looper. Nine times out of ten, when the looper thread breaks, it's because it is threaded incorrectly or the tension is set too high.

It is generally recommended that when a thread (especially a looper thread) breaks on a serger, you should remove all the threads and start over from the beginning (yep, that sounds painful but it is better to just bite the bullet and just do it rather than fighting it and never getting it threaded right). Make sure the presser foot is raised throughout the threading process, give each thread an extra tug when going through the tension disk to insure it is seated in the disk properly, follow the threading order (usually upper looper first, then lower looper) and the thread pathway is correct for each thread (no guides are skipped and thread is not wrapped around something). The last step of the lower looper threading is to make sure the lower looper thread drapes over the upper looper before being pulled under the presser foot and toward the back of the machine.

Set the tensions to the midway point between high & low numbers before testing.

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Apr 10, 2016 | Sewing Machines

1 Answer

Overlocker is not sewing. How can I thread the lower looper without it breaking?


Thread breakage is usually an indication that the machine is not threaded correctly or the tension is set too tight.

As a reminder, if a thread breaks, save yourself some (lots!) frustration and rethread every thread From The Beginning. Rethreading only the broken thread will usually just lead to it breaking again. Sergers are finicky and must be threaded in the correct order. Also, Always raise the presser foot while threading. Your thread breakage is occurring with the lower looper. Be sure that you are threading every guide and give it a little tug going through the tension disk. Usually, the last step is to drape the lower looper thread over the top of the upper looper before it is pulled back and under the presser foot. Be sure to initially set the tension at the midway point between the high & low numbers.

My serger is still not working properly trhread still breaking lower and...


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Apr 07, 2016 | Sewing Machines

2 Answers

Upper looper thread keeps breaking


try a new needles
check for burrs
make sure the thread is not caught anywhere

Feb 04, 2016 | Sewing Machines

1 Answer

Just bought Juki MO1000. Have threaded and re-threaded several times (easy enough) because the lower looper thread (position 1) thread breaks after sewing 4-5 inches. Any ideas?


Yep, 9 times out of 10 when thread breaks, something is not threaded correctly. Also, whenever thread breaks or becomes unthreaded, best policy is to unthread everything and start over from the beginning. Simply re-threading the broken thread will usually not work.

Remove all the thread from the machine. RAISE the presser foot (important to ALWAYS do this so the threads will seat properly in the tension disks).

Rethread totally from the beginning making sure to follow the threading instructions for each thread and that the threads are threaded in the ORDER (ie upper looper, then lower looper, then needles) per the manual. If the threads are not threaded in proper order, the machine will most likely never work.

When threading the lower looper, as the last step, be sure to pull the thread tail over the top of the upper looper mechanism before pulling the thread tails under the presser foot.

If the thread continues to break, make sure the tension for that disk is not set too tight. Loosen it up and see if that makes a difference. Most factory standard thread tensions are around the midway point between the high and low numbers. Then slight adjustments can be made from that setting to tweak the tension result.

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Jan 29, 2016 | Juki 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

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

The lower looper keeps breaking thread


Hi,...if the lower looper thread is breaking before you sew six inches or more then I suspect a threading problem.When the lower looper thread breaks, You MUST unthread the needles before you thread the lower looper. Thread the looper and then rethread the needles.

Hope that helps,
Doug

Aug 05, 2010 | Simplicity Serge Pro SW432 Mechanical...

2 Answers

Thread continually breaking in lower looper needle


I was having this very same problem with my lower looper . I had been using the one needle stitching all afternoon and I was doing quite nice stitching. then I decided to put the right needle back in and do some overlock stitching and guess what I spent the next two hours fighting the looper problem. I had completely re-thread this machine at least 20 times now. I decided to take the needle out and re-insert it and re-thread it one more time (right lower looper- then upper looper- right needle- then left needle) was careful to pull all threads to the back and under the presser foot for about 6 inches.
Held on to the thread, lowered presser foot and did the chaining stitch. BINGO it didn't break, tried it with a piece of cloth and Perfect stitches. I have a Babylock BL402 and used tension settings left to right
4-3-3-3 and default settings for the rest.
Hope this helps someone someday.
Jo Griffith

Oct 20, 2008 | Toyota TL-432DE Mechanical Sewing Machine

4 Answers

Brother 1034D


I had the same problem with the blue thread- it would sew and inch then pop- mine worked wihtout breaking after I re threaded in this order: green, blue, red then yellow

Jun 08, 2008 | Brother 1034D Mechanical Sewing Machine

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