Question about Brother Lay-In Thread Serger Mechanical Sewing Machine

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Lower looper thread gets stuck in the clip and breaks

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Does this Serger have a moveable threading part on the lower looper and if so, is it in the correct position? It sounds like the clip is in the wrong place if it is catching the thread, so this could be the cause if so.

If not, then I would suggest that you recheck the threading, and thread in sequence, top looper, bottom looper, then needles, checking all thread loops are being used in the thread path, review carefully using the manual's threading diagram.

If you still can't resolve the issue, then take it in for a service, it is possible to knock the loopers out of time and if so, you'll need a technician to rectify.

Posted on May 23, 2011

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Toyota overlocker sl3000 ; 3rd thread keeps snapping. How do I stop this ?


Third thread--is that the upper looper? Remove all the threads from the machine. Clip them below the thread tree, RAISE the presser foot, and then pull all 4 threads down through the needle. (Never Pull Up!!)

ALWAYS RAISE the presser foot.
Rethread beginning with the Upper Looper, then Lower Looper, then the needles. Be sure to ALWAYS thread in this order!! (On most newer machines, when threading the Lower Looper, always finish with the Lower Looper "draped" over the top of the Upper Looper.)

If a thread breaks, remove the threads and start over from the beginning as trying to fish a thread through the existing threads very SELDOM works.

Verify each thread path is correct.

When threading each thread and to insure the threads are seated in the tensioners, give each thread an extra little tug when going through the tension disk.

Be sure to oil your machine frequently to keep it operating smoothly!

Make It Handmade Threading Your Serger or Overlocker

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May 03, 2017 | Toyota Sewing Machines

1 Answer

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.

...

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

1 Answer

Model 3434D. Why does lower looper thread keep breaking?


Usually thread breakage is due to incorrect threading or tension set too tight. When thread breaks, the Best Course of Action is to clip all the threads between the thread tree and the tension disks, Raise the presser foot, and pull all the threads down and out. (Never pull threads up through the tension disks.)

RAISE the presser foot, rethread each and every thread in the order specified in the manual and confirm that each thread path is correct. Grasp each thread between the thread tree and the tension disk with one hand and with the other hand grasp the thread below the tension disk and give a little tug to make sure each is seated firmly in the tension disk. Also on most machines, the lower looper thread must drape over the the upper looper before being pulled under the presser foot.

Lower the presser foot and set each tension guide to the midway point (the factory standard) and retest.

Usually, rethreading only the broken thread will fail. (For some reason, sergers are very finicky.) Just bite the bullet and rethread each and every thread.

Feb 22, 2016 | Janome 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

L5 serger overlocker. Why don't the threads make a chain?


rethread machine, make sure u thread all steps

Jul 14, 2015 | Elna 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

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1 Answer

Brother serger thread


The lower looper thread MUST be threaded before the needles are threaded. You must also be sure the lower looper thread is pushed and staying all the way to the left before it is threaded through the looper eye. Double check the threading diagram and count the number of guides the thread passes through. Count how many guides you have actually passed it through. It must be the same. The dealer you bought it from should be willing to show you if you can't figure it out.
sewman7

Jun 17, 2008 | Brother Lay-In Thread Serger Mechanical...

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