SINGER W426 - Manual (Page 14)

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UPPER THREADING
1. Turn the hand wheel toward you
to raise the take-up lever to its
highest position.
2. Place a spool of thread on the
spool pin.
3. Lead the thread through the top
thread guides.
4. Down and between the tension
discs, from right to left.
5. Draw the thread up through the
check-spring and with a slight
tug into the hook.
6. Up (Model 426 only . . . . behind
the front thread guard) and
through the eye of take-up lever
from right to left.
Lead thread down, through the
thread guide at the bottom of
the threading slot (Model 426
only ... .after drawing thread
behind the front thread guard),
then, through the needle bar
thread guide from the back.
8. Thread the needle FROM LEFT
TO RIGHT, drawing it through
about 3 or 4 inches. Hold the
end of the upper thread loosely
and turn the hand wheel toward
you until the needle goes all the
way down and comes back up. A
thread
loop will form over
the upper thread which then can
be pulled out straight. Place
both thread ends under presser
foot and draw toward the back
of the machine, leaving both
threads three or four inches
long.