Adjusting Needle Thread Tension
The standard upper thread tension should be 59 to 67 grams when the machine is set for
stitch No.1 and the tension dial is set at AUTO, measured with a #50 polyester thread being
pulled at approximately 110 mm/s in the direction of the arrow.
1. Turn the power switch on and select the stitch No. 1.
Press the needle up/down button twice.
2. Set the thread tension to 3.4 by pressing the ADJUST
key.
3. Lower the presser foot.
4. Open the face cover and adjust the thread tension.
(A) If the thread tension is less than 59 g, turn the screw
in the direction of “-”.
(B) If the thread tension is more than 67 g, turn the
screw in the direction of “+”.
(1)
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