Adjusting The Thread Tension - SunStar KM-757 User Manual

7) Adjusting the thread tension

The result of the needlework depends on the sewing conditions such as the sewing material, used thread and stitch length.
So please adjust as desired.
(1) Adjusting the upper thread tension
Like in figure 26, turning the tension adjustment nut of
the thread tension control assembly clockwise makes the
upper thread tension stronger and counterclockwise
makes it weaker.
(2) Adjusting the lower thread tension
Like in figure 27, turning the tension adjustment nut ①
of the hook clockwise makes the lower thread tension
stronger and counterclockwise makes it weaker.
good sewing
upper thread tension is strong while the lower thread
tension is weak.
upper thread tension is weak while the lower thread
tension is weak.
strong
weak
weak
strong
weak
strong
[Figure 26]
[Figure 27]
19