[Adjusting the remaining length of needle thread]
Adjust the length of needle thread remaining at the
needle to 35 to 45 mm (for both the S and H types)
by turning thread tension No. 1 nut
①
.
1) Turn thread tension No. 1 nut
①
clockwise (in
direction
A
), to shorten the thread length re-
maining on the needle after thread trimming or
counterclockwise (in direction
B
), to lengthen the
thread length.
So-called "bird's nest phenomenon"
is reduced by shortening the length of
needle thread remaining at the needle. In
this case, ho
wever, the needle thread is
likely to slip o the needle eyelet. To re-
duce slip-o of the needle thread, sew-
ing speed at the beginning of sewing
should be reduced.
A
B
①
35 to 45mm
– 54 –
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