Make sure you're using the correct size needle for the fabric you're sewing.
Delicate / Very light weight.... china silk, fine lace, organza....size 8 or 9 .....Light weight taffeta, lining fabric, thin velvet, synthetic sheers size 9, 10 or 11.... Medium weight cotton nylon, crepe, knits, flannel, spandex, linen, poplin, wool, muslin size 12 or 14..... Heavy weight fleece denim, leather, vinyl upholstery fabric size 14 or 16....Very heavy weight ; heavy canvas ; thick leather size 16 or 18
SOURCE: Thread breaking.
Rethread the machine following these directions:
all machines thread the same. TTN tension, take up,
needle.
Beginning with the spool, guide the
thread through the thread guides to the tension assembly. Pull the thread
through the tension assembly and test it to make sure the tension is working
correctly.
(To do this test, adjust your tension setting to normal or medium or 5 or
something in the middle. Raise the presser foot and pull the thread through the
tension. It should pull easily!! Lower the presser foot and pull the thread. It
should pull noticeably harder.) If it passes this test, continue up through the
take up lever,then down through the thread guides to the needle. Make sure your
needle is fully inserted and turned the correct way.( If you load your bobbin
case from the left side,the needle rule is normally FLAT to the RIGHT is RIGHT.
There are some exceptions. If you have a newer style drop in bobbin or your
bobbin case loads in the front then the rule is FLAT to the BACK.
Remove the bobbin case and bobbin. Pull on the bobbin thread to make sure it doesn't pull too hard. It should have some tension on it but not a lot. Insert the bobbin and bobbin case into the hook assembly and pull on the bobbin thread again.The tension should still be about the same. If it is tight, you need to look at the bottom of the pin that the bobbin case sits on and see if there are any threads looped around it. If there are , you need to remove them.
Hold the top thread , turn the hand wheel and see if the thread is catching someplace around the hook assembly. If it pulls the thread up easily, put some fabric in it and see how it works.
Make sure the thread is through the take up lever.
sewman7
Sewman7
SOURCE: needle keeps breaking the top thread...
In general, there are three main causes for this...
wrong needles (Singer), low quality thread (dual duty or all purpose), incorrect threading. Be sure to thread the needle from front to back.
SOURCE: consew 230 sewing machine...will not pick up bobber thread
needle should be 16x257 Industrial machine needle with no flat side.
It does have a long groove on one side and a scallop just above the eye of the needle on the other side. On this machine the needle is inserted so that the long groove goes to the left and it threads left to right.
The thread breakage may be caused by a rough place on the hook. You need to turn the machine on it's back and look and feel all the way around the hook assembly. If you find a rough spot it can be removed with an emery stick. If it's not a rough spot, then the machine is probably out of time.
sewman7
SOURCE: thread keeps breaking on sewing machine
Probably just the needle. Try turning it 180 degrees
SOURCE: free download of singer overlocker manual
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