Page 248 - CTS - Sewing Technology - TP - Volume - 2-0

SEWING TECHNOLOGY - CITS

Fig 3

5 Observe the stitch appearance and tension of the stitches after completing the sewing. Once sewing is
completed and the thread has been trimmed, feed will move automatically to the next starting point and the
work clamp (3) will raise.
6 Adjust the upper and lower thread tensions if necessary as explained below.

Upper thread tension
Turn the tension nut (1) (main tension) to adjust the tension as appropriate for the material being sewn.
Furthermore, turn the thread nut(2) (sub-tension) to adjust the remaining length of upper thread to 35-40 mm,
when the thread take-up lever is not used. (Fig 4)

Fig 4

Lower thread tension
Adjust the thread tension to the weakest possible tension by turning the thread tension nut (1) until the bobbin
case will not drop by its own wieght while the thread end coming out of the bobbin case is held. (Fig 5).

Fig 5

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CITS : Apparel - Sewing Technology - Exercise 36 CITS : Apparel - Sewing Technology - Exercise 36