typical GC2605, Инструкция по эксплуатации и каталог запасных частей

Страница: 12 / 44

17
A
B
C
D
E
-7-
5. A dj ust i ng t he t hr ead t ensi on
In general, the thread tension is to be adjusted in
accordance with materials, thread and others.
In practice, the thread tension is adjusted
according to the stitches resulted. The needle thread
tension should be adjusted with reference to the bobbin
thread tension. When adjusting the bobbin thread
tension, turn bobbin case tension spring screw A (see
Fig.20)clockwise for more tension or turn the screw
counterclockwise for less tension.
.
.
When drawing the bobbin thread, hold the tip of
the needle thread by hand, turn the balance wheel to
lower the needle bar and then, to lift it to its highest
position, Pull the needle thread and then the bobbin
thread is drawn up. Put the tips or the needle and
bobbin thread toward front under the presser foot.
4.6 Setting the bobbin (Fig.17)
Put bobbin B into bobbin case, pass thread E thru
slit C to lead it under-neath the bobbin case tension
spring D and out at the notch of the spring, draw out
thread about 100mm.
Remark: The bobbin case must be rotating
clockwise when thread E is drawn. If not, reverse
bobbin B.
4.7 Installing the bobbin case(Fig.18)
Lift the needle bar to its highest position and
open the bed slide. Fully lift bobbin case latch lever A,
holding it by fingers, then install the bobbin case into
rotating hook B as shown in Fig.18. Make sure that
the bobbin case latch is engaged in the position groove
of rotating hook spindle.
When remove the bobbin case from the rotating
hook, fully lift bobbin case latch lever A holding it by
fingers first, so as to prevent the bobbin from dropping
out of the bobbin case,then gently take the bobbin case
out.
4.8 Setting stitch length and reverse sewing (Fig.19)
Stitch length can be set by turning stitch length
regulating dial 1 The stitch length is longer when
turning stitch length regulating dial 1 Counterclock-
wise, and the stitch length is shorter when turning dial
1. Clockwise. Reverse sewing can be obtained when
feed reverse lever 2 is depressed. And forward sewing
can be restored automatically when feed reverse lever
2 is released.
.
.
.
.
.
.
.
18
A
B
19
1
2