Bobbin thread breaks

Bobbin is set incorrectly.

Reset the bobbin thread correctly.
Refer to How do I set the bobbin?
Bobbin thread is incorrectly wound.

Use a correctly wound bobbin.
Refer to How do I wind the bobbin?
There are scratches on the bobbin or it doesn’t rotate properly.

Replace the bobbin.
Refer to How do I set the bobbin?
Thread is twisted.

Use scissors, etc. to cut the twisted thread and remove it from the race, etc.
A bobbin designed specifically for this machine is not being used.

Incorrect bobbins will not work properly.
Only use a bobbin designed specifically for this machine.
Refer to How do I set the bobbin?

FAQs & Troubleshooting