What is the correct tension for a Brother sewing machine?

What should my tension be on my Brother sewing machine?

a. The tension dial should be set between 2 to 6. b. When the upper thread is just visible on the back of the fabric, the thred tension is correct.

How do I adjust the tension on my Brother sewing machine?

Turn the thread tension dial to a lower number (toward the left). (Loosen the thread tension.) When the upper thread is visible from the lower side of the fabric. Turn the thread tension dial to a higher number (toward the right).

Why is my thread bunching underneath?

A: Looping on the underside, or back of the fabric, means the top tension is too loose compared to the bobbin tension, so the bobbin thread is pulling too much top thread underneath. By tightening the top tension, the loops will stop, but the added tension may cause breakage, especially with sensitive threads.

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