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Bad Sewing
04
I
H
G
[Fig. 1]
[Fig. 2]
[Fig. 3]
Adjusting the Tension of the Upper Thread
When the adjusting nut
turned clockwise, the upper thread tension gets stronger. When it
is turned counter-clockwise, the upper thread tension gets weaker.
Insert the driver into the groove
device shaft and turn it clockwise and then the tension of the
thread take-up lever string
counter-clockwise, the tension gets weaker.
When the tension adjusting nut
control device is turned clockwise, the remaining thread gets
shorter. When it is turned counter-clockwise, the remaining thread
gets longer.
of the thread tension control device is
of the thread tension control
gets stronger. When it turned
of the sub upper thread tension
Maintenance Book
35
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