Hello,
Here are several solutions to try. I realize you have tried some of these but it may be worth a second try.
* Re-thread your machine, an incorrectly threaded machine can cause thread to break.
* Decrease the tension on your machine. The tension may be too tight for your thread.
* Reposition the spool of thread on the spindle. You know that little nick in the edge of a spool that’s used to hold the loose end of the thread? Your thread may be catching on this nick as you sew. Place your spool so that this nick rests against the bottom of the spindle.
* Reinsert your needle and make sure it goes all the way into the holder and that it’s positioned correctly, usually with the flat side away from the bobbin, but consult your machine’s manual to be sure.
* Change your needle.Your needle may be bent or dull. The eye of your needle may have a nick in it that’s cutting the thread as you sew. Or your needle may be too small for the thread you’re using, in which case, change to a larger needle. And make sure your needle is appropriate for the weight and type of your fabric.
* Change your thread
Your thread may be weak. Or your thread may be fuzzy and irregular, causing it to catch in the
eye of your needle as you sew. Cheap thread tends to be weak and fuzzy, so make sure to
use a quality, brand name thread. And if you’ve been sewing with an older cotton thread, which
can dry out and become brittle with age, try a newer thread.
* Check your presser foot for damage to the needle hole
A burr in your presser foot’s needle hole may be cutting your thread. Gently smooth any rough
spot you find with an emery cloth.
* There may be a burr in one of your thread guides, in which case, you may need to have your
machine professionally serviced to have the part replaced.
I hope this helps.
How to disengage bobbin winder form a 530-2 Bernina
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