My serger will only sew a few inches, then the thread on the lower looper breaks. I have checked threading, rethreaded many times.

Remove all the threads.
Replace the needle.
ALWAYS RAISE the presser foot and rethread from the beginning.
Verify each thread is in the correct thread path.
ALWAYS THREAD each in the order specified or you will continue to have problems--for a lot of machines, the order is Upper Looper, Lower Looper, then needles.
Check the tension on that particular thread--too tight, it will break.

Breaking thread after about an inch usually indicates it is mis-threaded--a guide has been skipped or threaded out of order or the thread may be wrapped around something.


Serger needle thread breaking sewing discussion topic PatternReview com

http://www.amitymama.com/threads/anyone-have-an-idea-why-my-serger-needle-thread-keeps-breaking.280524

Sew What Up View thread Help Needle thread keeps breaking

probably need a adjustment, you may have to have the looper checked

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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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.

rethread machine, make sure u thread all steps

Please re thread machine from scratch threading upper looper first then lower looper then needles also be sure needles are in with the flat back to the back of machine sequence of threading is imperative

Really difficult to say without seeing it. Generally, breaking thread indicates a mis-threading issue. When I've had this problem, it usually requires unthreading the entire machine. ALWAYS RAISE the presser foot and rethread from the beginning. Be sure to thread EACH THREAD IN THE ORDER specified (upper looper, lower looper, then needles). Also, when threading each thread, give each thread an extra little tug where it goes through the tension disk to make sure it is seated fully.


serger breaking thread Google Search

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.

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

I have found with any serger I have used that you have to cut the looper (bottom) threads before re threading the needle threads. You then rethread the loopers.
If you don't do this, the needle threads keep breaking. Hope this helps.