Loops appear on the surface of the fabric when embroidering.
Check the following points or issues.
The upper thread tension is low.
The thread tension does not correspond to the amount that the thread tension knob or the upper thread guide pretension knob was tightened.
If the thread tension cannot be adjusted, thread wax and dust may have collected in the upper or middle thread guide plates, causing the thread tension guide plates to rise. Clean the thread tension guide plates.
Thread is not correctly threaded around upper thread tension discs.
Clean upper thread tension disc. Rethread and make sure tension disc rotates when pulling on thread.
The thread quality is poor.
Try sewing with different thread.
If the problem no longer occurs after the thread is changed, the thread quality is the problem. Replace the thread with one of good quality.
PR1050X, PR1055X, PR670E / PR670EC, PR680W / PR680WC
If you need further assistance, please contact Brother customer service:
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