SINGER 404K User Manual
Page 14
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Threading Central Bobbin Machine No. 15K.
UPPER THREADING
UNDER THREADING
Raise take-up lever to its highest
point.
Place spool of thread on spool
pin.
Thread
machine
as
shown
in
Fig. 18.
Thread needle from left to right.
Open bed slide.
Open bobbin case latch as shown in
Fig. 19 and withdraw bobbin.
Release the latch, turn the bobbin
case downward and bobbin will
drop out.
Hold bobbin case with slot in edge
at the top and wound bobbin with
thread
leading
on
top
towards
the
right, as shown in Fig. 20.
Pull thread into slot as shown in
left hand illustration. Fig. 21.
Draw
the
thread
down,
under
the
tension spring, and to the left into
the delivery eye at its end, as shown
in right hand illustration. Fig. 21.
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