TO ADJUST BOBBIN WINDING DEVICE
The bobbin must be wound evenly. If not, irregular stitching will be the result. When the bobbin
is wound excessively on the upper part of the bobbin (A), loosen the top cover thread guide set screw
on the front of the top cover and lower the thread guide slightly. Tighten the screw to reset the
thread guide.
When it is wound excessively on the lower part of the bobbin (B), loosen the thread guide set screw
and raise the thread guide slightly. Tighten the screw to reset the thread guide.