SINGER 112 - Manual (Page 16)

Zigzag Sewing Machine Instruction Manual and Parts List
Place bobbin on bobbin winder spindle '3'. Figure 11,
pushing it on as far as it will go.
Pre tension 'T (see Figure 11)
More tension
Less tension
Push latch '2' in the direction indicated by arrow 'A',
then start the machine (see Figure 11),
Bobbin winder spindle '3', rotate in the direction
indicated by arrow 'B' (see Figure 11),
To adjust the amount of thread on bobbin, loosen
screw '4' on latch '2' and swing the latch '2' away
from you or toward you, as required.
For more thread on bobbin, swing latch '2' away from
you.
For less thread on bobbin, swing latch '2' toward you.
If thread winds unevenly on bobbin, loosen screw '5'
and move pre-tension 'V up or down, as required,
and tighten screw '5'.
Threading the pre-tension for bobbin winding
Caution:
• Do not guide or hold thread when winding the bobbin.
3.9. Bobbin Case Threading
Hold bobbin case so that thread unwinds in the
direction shown in Figure 12, and put bobbin in
bobbin case.
Put thread into notch '1', and draw it under tension
spring '2' (see Figure 13)
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