SINGER W1640 - Manual (Page 13)

threading bobbin case
Hold bobbin as shown in Fig. ,3 so that thread goes over top of bob­
bin and away from you.
Place bobbin in case without turning it around.
u T
«"-on
Puli out thread ,0 check that bobbin turns clockwise. (Fig. 15 )
INSERTING BOBBIN CASE
Be sure that 6 inches of thread extends out
of bobbin.
Hold bobbin case so long finger on case
points up. Open latch. (Fig. 16)
Slip case over center pin in shuttle and
press in place until long finger enters
notch. Release latch, and press down
(Fig. 17)
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Close Hook Cover.
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