SINGER W616 - Manual (Page 9)

10
ADJUSTING THE TENSIONS
Always adjust the upper tension with the presser foot down,
as the tension is released when it is raised. To increase the'
tension on the upper thread, turn dial (Fig. 15) to the right, or
clockwise; to decrease, turn to the left. The higher the nun^ber
on the dial the tighter the tension. Before adjusting lower tension
be sure that the machinp is threaded properly.
When it is necessary to change the bobbin tension, turn the
small screw (Fig. 17) on side of the bobbin case clockwise to tighten
counterclockwise to loosen.
G
bar
the
SI
V
silk
dov
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the
red
Fig. 16 A Fig. 16 B Fig. 16-C
When the upper and under tensions are properly
balanced, a perfect stitch will be formed with both
threads interlocking in fabric (Fig. 16-A)
When the upper tension is too light, the lower
thread is pulled up over the upper thread which is
lying flat on the fabric (Fig. 16-B)
When the upper tension is too loose, the upper
thread forms loops over the lower thread lying flat
on the fabric (Fig. 16-C).
B