SINGER W311 BBS - Manual (Page 6)

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Place the spool of thread on the spool pin (6) and dra
out about 12" of thread through tension bracket. Wii
thread on to the bobbin seven or eight times toward you. Thi
set the bobbin on the spindle (A) of the bobbin winder. Shou
the bobbin wind unevenly, slide tension bracket to left or rig
as required.
To set the bobbin, put the bobbin on the spindle (A)
shown, pushing up the stop latch (B).
After setting the bobbin, push the lever (C) down and t
rubber ring will touch the balance wheel. Then turn the balan
wheel toward you and run the machine slowly to wind the be
bin evenly.
When the bobbin is full, it will automatically come to a stf
Cut the thread and remove the bobbin and retighten balar
wheel for sewing.
In order to sew and wind bobbin simultaneously, do i
loosen the balance wheel.
WINDING THE BOBBIN