High-pitched sound while sewing

Needle is turned, bent or the point is dull.

Replace the needle.
Refer to How do I change the needle?
Dust or lint is caught in the feed dogs.

Remove the dust or lint.
Refer to How do I clean the race?
Pieces of thread are caught in the race.

Clean the race.
Refer to How do I clean the race?
Upper threading is incorrect.

Check the steps for threading the machine and rethread the machine.
Refer to How do I thread my machine ?
A bobbin designed specifically for this machine is not used.

Incorrect bobbins will not work properly.
Only use a bobbin designed specifically for this machine.
Refer to How do I set the bobbin ?
There are needle holes or friction scratches in the bobbin case.

Replace the bobbin case, or consult your authorized Brother dealer.

FAQs & Troubleshooting