SunStar SWF/B Series User Manual page 28

3) Take-Up Spring
○ ○ Correct
Connect between the take-up spring
and the stopper.
Take-up spring
① Take-up Spring Functions
Difference in the length of the upper thread pulled by the take-up lever and pulled by the hook creates tension
or looping. When the tension is too weak, the take-up spring handles the leftover length of the upper thread.
Increase the tension or the stroke of the spring to form tight stitches on the embroidery.
② Take-up Spring Adjustment
ⓐ Tension on the take-up spring affects the thread tension. Turn the tension adjusting stud clockwise to
increase the tension and counter-clockwise to decrease the tension.
ⓑ Adjusting stroke of the take-up spring:
To adjust the stroke of the spring during embroidery work, move the take-up spring stopper to right or left
as shown in [Fig.5-15].
Stopper
Thread tension
adjusting stud
5-10
× × Wrong
Take-up spring unable to connect with the stopper
(due to dust or foreign substances in the stopper.)
[Fig.5-14]
[Fig.5-15]