Manual

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Fig. 19

Fig. 20

When the upper and under tensions are pro

perly balanced, a perfect stitch will be formed

with both threads interlocking in fabric (Fig.

20).

When the upper tension is too tight, the

lower thread is pulled up over the upper thread

which is lying flat on the fabric (Fig. 21).

When the upper tension is too loose, the

upper thread forms loops over the lower thread

lying flat on the fabric (Fig. 22).

Fig. 21

Fig. 22

ADJUSTING PRESSURE AND FEEDING

OF FABRIC

GENERAL SEWING. Usually for straight sewing

and zigzag stitching, the pressure bar cap or darner re

lease, Fig. 24 and 25, is at its lowest position and the

drop feed button marked "Sew", Fig. 23, is pressed down

and then released.

Fig. 23