OTHER BASIC PROCEDURES
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114
■Upper thread is too tight
The tension of the upper thread is too tight,
resulting in the bobbin thread being visible from
the right side of the fabric.
1Right side
2Wrong side
Turn the knob in the direction of the arrow to
decrease the tension of the upper thread.
1Red line
If the red line is visible, the thread tension
cannot be decreased any further. Increase the
tension of the bobbin thread. For details, refer to
page 112.
Note
●If you decrease the thread tension further
than the red line, the tension knob may be
dis-assembled.
●If necessary, refer to page249 for
reassembling the tension unit.
■Upper thread is too loose
The tension of the upper thread is too loose,
resulting in a loose upper thread, loose thread
locks or loops appearing on the right side of the
fabric.
1Right side
2Wrong side
Turn the knob in the direction of the arrow to
increase the tension of the bobbin thread.