17 MA_560_A4_180619_en
3.5.2
The upper thread tension mainly regulates the seam appearance.
Upper thread tension (Fig. 9)
Depending on the material these value have to be modified to obtain an
optimum seam appearance.
3.5.3
The lower thread tension regulates the length of the initial thread.
Lower thread tension (Fig. 9)
Turning clockwise → shorter thread
Turning counterclockwise → thread gets longer
Depending on the material these value have to be modified to obtain an
optimum seam appearance.
Fig. 9
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