typical GC20606-1-D2, Инструкция по эксплуатации

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8
24
22
C
B
A
①
②
①
23
4.9 Installing the bobbin (Fig.22)
Note: when the bobbin is installed into the bobbin case,
the thread should be wound properly in the correct
direction shown in the figure.
4.10 Threading the bobbin thread (Fig.23)
a. Draw the thread tip to the bobbin slot 1 shown in the
figure, and pull it out down through the inner bobbin
stop piece.
b. Hold the tip of the thread with left hand, turn the
balance wheel slowly and get the bobbin thread, then
draw it a little apart from the presser foot.
5.1 Thread tension adjustment
All forms of stitches are shown in Fig.20.
The normal stitch of sewing machine is shown as Fig.A.
If stitch is abnormal, the puckering and thread breakage
will occur, and the needle thread tension and bobbin
thread tension should be adjusted so that the normal
stitch can be obtained.
5. Machine adjustment
Thread
Rotating hook
Slide plate
Inner bobbin stop piece
Normal stitch
Needle thread is too loose or
bobbin thread is too tight
Thread
Thread
Rotating hook
Slide plate
Needle thread is too or
bobbin thread is too loose
tight