ADJUSTING THREAD TENSION
Normal upper thread tension: 3– 5
Inside of fabric
Upper thread
Tension is too tight
The needle thread shows through on the topside
of the fabric and it will feel bumpy.
Turn the dial to a lower number to loosen the
needle thread tension.
Tension is too loose
The needle thread shows through on the
underside of the fabric and it will feel bumpy.
Turn the dial to a higher number to tighten the
needle thread tension.
Upper thread tension may be
adjusted by turning the thread tension
dial.
Lower thread tension can be increased by
turning the screw of the bobbin case slightly
to the right (clockwise). Turning it to the left
(counter -clockwise) decreases tension.
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