typical GC2605, Инструкция по эксплуатации и каталог запасных частей

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25
24
a
b
c
d
e
5.2 Adjusting the thread guide
The position of the thread guide affects sewing
quality, so it must be adjusted according to the materials
to be sewn.
5.3 Adjusting the tension of needle thread and
bobbin thread
Fig.24 shows the various type of stitch forms
probably to happen when sewing.
Normal stitch form should be as shown in Fig.24a
When abnormal stitches occur with puckering, loose
stitch or thread breakage, the tension of needle thread
and bobbin thread must be adjusted accordingly.
Fig.24b shows the needle thread tension is too
strong or the bobbin thread tension is too weak. Turn
the tension regulating thumb nut counter-clockwise to
make the needle thread get less tension or tighten the
bobbin case tension regulating screw to make the
bobbin thread get more tension (see Fig.25).
Fig. 24c shows the needle thread tension is too
weak or the bobbin thread is too strong, turn the tension
regulating thumb nut clockwise to make the needle
thread get more tension or turn the bobbin case tension
regulating srcew counter-clockwise to make the bobbin
thread get less tension (see Fig.26).
Fig.24d
、
e shows other abnomal stitches, adjust-
ment can the made with reference to the above means
Thread guide
Position
Material
Weight
Heavy
Medium
Light
Leftward Center Rightward
1 2 3