SINGER W12 - Manual (Page 5)

TO REPLACE THE SHUTTLE
Turn the machine in direction for sewing until the point of the
needle just enters the needle plate hole: take the shuttle by the center
pin JV with the left hand and place it in the race, so that point of
shuttle will be from you and over arrow on thread cast off, so that
the holes in the shuttle will drop on. to the driving pins in race, then
^ replace the shuttle race coven
I DO NOT FORCE the shuttle into race. It will enter readily
when in proper position
Should the machine at any time act badly in sewing or running
it would be well to remove shuttle and dean it and the race, which
is but a moments work.
To replace the bobbin case, it need not be held as when remov­
ing. but simply slip it on the pin in shuttle, with the tension project­
ing upward, and push it into shuttle as far as it will go, when the
spring latch will pass over and retain it in that position.
The thread should be allowed to project about one inch from
bobbin case tension.
TO WIND THE BOBBIN
Place spool oa spool pin, pass the thread dovn. through
the rear hole in axm of cover plate, then to the left under and
over the arm down through front hole. Put the end of thread
through hole U in bobbin from inside out, place bobbin on
bobbin winder spindle, raise winder so p
belt will drive it, loosen thumb screw in
Fig, 7 Bobbin hand wheel, run the machine as in sew­
ing. holding on to the end of thread until winding is started'
then break off thread and finish winding.
LOWER TENSION
Fig. 8 represents the bobbin case. To regulate the lower
tension, t-urn the screw T to the right to tighten, and to me
left to loosen the same. Fig. 3 Bobbin Case
TO THREAD BOBBIN CASE TENSION
Place bobbin in case so that thread will come from bc^hin on
same side as hole B in. bobbin case: pass thread throusii slot A to
hole B thence across opening, drawing it down under h'P C then pull
it up until thread passes out under tension spring R-
. The tension on bob­
bin case should be the
same as the upper ten­
sion.
0 1
if ■
Fif. 9 Shuttle Fig. 10 Shuttle Race Cover