To clean stitch-forming mechanism of machine 20ik, To remove bobbin case, To replace bobbin case – SINGER 404K User Manual
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Gleaning and Oiling—(Continued)
To Clean Stitch-Forming Mechanism of Machine 20IK
(See Fig. 56)
To Remove Bobbin Case
Raise needle and presser foot.
Draw slide plate to the left.
Remove bobbin from case.
you until end of hook ring E is
toward the front of machine, as
slot C between the ring and the
edge of spring.
so that it will drop into the slot
and unlock the spring.
driver against the edge of the slot
in the ring and push it around
in the opposite direction to hook
rotation until cut-out B is oppo
site spring D.
Lift out ring and bobbin case.
To Replace Bobbin Case
Place bobbin case in position with
finger A in the opening in the plate
under the feed dog, as shown.
slightly to ensure proper seating.
Place ring E in position with cut-out
B opposite spring D.
Press ring into place and turn it in
spring locks it in position.