SINGER W12 - Manual (Page 3)

INSTRUCTIONS
for using the
White Rotary Sewing Machine
Never run Machine with needle threaded without goods
under presser-foot. Run Machine so that upper side of hand
wheel moves from gou.
TO SET NEEDLE
Raise the needle-bar to its highest point; loosen the thumb­
screw and press it to the left to permit the shank of the
needle
to pass up between the clamp and needle-bar as far as it will go,
flat side to the
right
—the
needle
being flattened on one side so
it will set itself perfectly, then fasten securely by tightening
thumb-screw.
To avoid loosening of the needle, always use a screw driver
to fasten the same, the needle nut being slotted for that purpose.
The needle, when descending, should pass
central
in the
needle hole from
front to rear , but close to the right side of the
hole, as it prevents the needle from glancing into the race and
being caught by the shuttle.
NEEDLES AND THREAD TO BE USED
The MOST IMPORTANT consideration is to buy and use perfect
needles—not bent, nor blunt points.
When ordering needles for this machine, be sure to ask for
the genuine White Rotary flat shank needles which are stamped
on the shank “White F. R.” Imitation or “just as good” needles
will cause trouble. Get the genuine White.
Cut of White Rotary flat shank needle
showing exact length.
The size of the needle should conform to the size of the
thread and both be suitable to the material sewed. Use as fine a
needle as will permit the thread to pass freely through the eye.
The following index will show the size of needle, thread and
silk to be used.
COTTON THREAD. SILK THREAD NO. OP NEEDLE
150 to 800 000 00
90 to ISO 00 0
70 to 90 0 1
50 to 70 A & Б 2
SO to 50 C 3
20 to 30 D 4
For colored thread use needles one size larger than given
in index above.
3