typical GC6-6, Инструкция

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19
A
B
C
D
10
4.7. Installing the bobbin case (Fig.19)
1)
Lift the needle bar to its hightest position and
open the bed slide.
2) Fully lift bobbin case latch lever A and holding
it by fingers, securely install the bobbin case into the
rotating hook B.Note that the bobbin case latch is engaged
in the positioning groove of rotating hook spindle.
3) When remove the bobbin case from rotating
hook,fully lift the bobbin case latch lever A and holding
it by fingers first, so that to prevent the bobbin from
dropping out from the bobbin case, then gently take
the bobbin case out.
4.8. Setting stitch length and reverse sewing (Fig.20)
1)
Stitch length can be set by turning stitch length
regulating dial 1.The stitch length is longer when turning
stitch length regulating dial 1counter-clockwise, and the
stitch length is shorter when turning the dial 1 clockwise.
2) Sewing reverse when feed reverse lever 2 is
depressed, and forward sewing is restored automati-
cally when release the depressing on feed reverse lever 2
1
2
A
Strong
weak
20
21
5. Adjusting thread tension
In principle the thread tension is to be adjusted in
accordance with materials, thread and other factors.
In practice, the thread tension is adjusted according
to the stitches resulted. The needle thread tension
should be adjusted with referensce to the bobbin thread
tension.
To adjust the bobbin thread tension, turn bobbin
case tension spring screw A (see Fig.21) clockwise to
increase the tension,or turn the screw counter-clockwise
to decrease the tension.