SINGER W8931 - Manual (Page 9)

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THREADING THE BOBBIN CASE
Step 1 (illustrated in. Fig. 6). Hold
bobbin case between thumb and fore­
finger of left band, so that the slot in
tbe edge of the bobbin case is on top.
Take tbe bobbin between thumb and
forefinger of right hand so that the
thread on top leads from left to right.
Step 2. Insert bobbin into bobbin case,
pull the thread into the slot of the bob­
bin case as shown in Fig. 7, and draw
it under the tension spring and into the
fork-shaped opening of the spring as
shown in Fig. 8.
Fig. 6
Fig. 5
Fig. 7
SLOT
Fig. 3