The thread is breaking

Thread breaks or shreds while sewing

Possible Causes and Solutions:

Cause: The needle is not inserted correctly in the machine.
Solution: Remove the needle and install it according to the instruction manual or support video. Make sure the needle grooves are facing the proper direction, and that the needle is inserted fully up into the needle bar.

Cause: The needle is not threaded correctly.
Solution: Thread the needle so that the thread passes through the eye of the needle from the long groove to the short groove of the needle.

Cause: The tension of the upper thread is too tight.
Solution: Loosen the tension of the upper thread by turning the tension nut counter-clockwise.

Cause: The machine is not threaded correctly.
Solution: Check whether the upper thread runs correctly from the spool of thread to the needle.

Cause: The upper thread is of poor quality. The thread may be too weak or it may be rotten due to improper storage and does not withstand the tension imposed on it. The thread may also be too hard and not possess the necessary elasticity.
Solution: Loosen the tension of the upper thread by turning the tension nut counter-clockwise. If possible, replace the inferior thread with one of good quality

Cause: The upper thread is of irregular thickness and has small knots which cannot pass through the eye of the needle.
Solution: Replace the inferior thread with one of good quality.

Cause: The upper thread has wrapped itself around the spool pin on top of the machine.
Solution: Unwind the thread from the spool pin. Eventually, place a felt washer underneath the spool of thread. If necessary, remove some of the thread from the full spool.

Cause: The upper thread is held back somewhere on its way from the spool of thread to the needle.
Solution: Examine the string of thread from the spool to the needle and eliminate any interference with the free motion of the thread.

Cause: The eye of the needle is rough or sharp, or the grooves in the needle are too shallow.
Solution: Insert a new needle.

Cause: The needle is bent.
Solution: Insert a new needle.

Cause: The needle is too fine for the upper thread and for the material being sewn.
Solution: Consult the needle and thread chart and insert a needle of the correct size.

Cause: The upper thread is too large for the size of needle that is being used.
Solution: Consult the needle and thread chart and select a thread of the correct thickness.

Cause: The wrong type of needle or wrong needle system is inserted.
Solution: Consult the instruction manual and replace needle with the one recommended for the machine.

Cause: The operator pulls the material in the direction of sewing.
Solution: The fabric must not be pulled during sewing. The machine alone must feed the fabric.