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Sounds like your tensions, both upper and lower are out of whack. Easily fixed if so...google a vidyfor your make/model machine on adjusting both upper and lower tensions.

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

make sure to keep long thread tail for the top & bobbin
of 4 to 6 inches & pulled behind the needle

take up lever--try putting some tape on it to see if that will stop the thread from coming off.
also change the needle--make sure is the correct one for the fabric

Most likely it is either your tension on thay thread being too high, or the needle is too big for the project you are working. Lower that tension, use the next size up needle, and thay should fix it. Also, I STRONGLY suggest only using maxi-locks thread. They are more expensive than other serger threads, but they are always half-price at hancock... Any other thread I have tried using causes breakage, especially on the the lower looper (the 4th thread). Although, of you keep the tension low-below 3 or so, you should be ok. If these tips don't help, I would also check your cutting width, if your machine has an adjustable one. If it is leaving too much gabric to the right of the needles, out is conceivable that this is putting too much pressure on the threads. Let me know if this helps!

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

Make sure you are threading the machine correctly and it has the proper tension. Also check the bobbin the thread has to go thru the little lash

Your threading is not right, totally remove your thread and rethread according to the manual directions and dvd. If, you still have problems call Singer at 1-800-4singer

Your needle should not come unthreaded in the middle of sewing.. if it does, it is because the thread breaks. this can be a simple tension problem or brittle thread.

if you are talking about at the beginning of sewing that the needle comes unthreaded, then you should just pull out 6-8 inches of thread through the needle before putting your fabric under and begin sewing.

i hop that helps.

It is impossible for a looper to come unthreaded if you are holding one end and the other is still feeding off the spool. Somewhere a thread broke - must be either the upper looper or the needle. Try completely re-threading your machine. Many machines have an "order" they prefer to be threaded. Try starting from the right tension guide and work to the left.