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Pulling direction: (pulling speed 110 mm/sec.)
Mechanical adjustment
Upper thread tension
The standard upper thread tension should be 75 to 90 grams when pulling the thread (while polyester thread size 50)
at the speed of 110 mm/sec with the tension at "AUTO" (Be sure the presser foot is lowered).
1. Set the thread tension dial to "AUTO".
2. Open the face cover.
Adjust the tension by turning the thread tension
adjusting screw.
To lower the tension, turn it clockwise (in the direction
of "–").
To tighten the tension, turn it counterclockwise (in the
direction of "+").
Thread tension dial
Thread tension dial
adjusting screw
