SINGER W1640 User Manual
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If bobbin runs out of thread while sewing, it is not necessary to completely unthread
machine to re-wind bobbin.
Simply bring thread from needle up through top thread guide in front of machine (Fig.
9). Insert end of thread from inside to outside in one of the holes of empty boddin.
Proceed according to instructions starting in paragraph 2, page 10 section 3 (Winding
If you wish to wind a bobbin while sewing, here is another method:
Place spool of thread on second spool pin and proceed as shown in illustration on page
10 Section 3 (Winding Bobbin). DO NOT RELEASE SEWING MECHANISM by turning
stop motion knob toward you. In this way, while you continue to sew, bobbin will be
RE-WINDING BOBBIN WHEN MACHINE IS THREADED