SINGER WF111 - Manual (Page 9)

TO REPLACE THE NEEDLE
To replace the needle, raise the needle bar to its highest
point by turning the balance wheel toward you by hand.
Loosen the needle clamp screw on the right hand side
and the needle clamp will open, allowing the old needle to
fall out.
Remove the old needle and slide the new needle up
(FLAT SIDE TOWARD THE BALANCE WHEEL) as
far as it will go. When the needle hits the stop it is in
position correctly. Now fasten the needle clamp securely.
For best results change needles frequently.
NEEDLES AND THREAD
Never use a bent needle, nor one with a blunt point, since this cause imperfect stitches and may
cause the needle to break. Unless the needle is in dear to the stop, flat side toward the balance
wheel, the machine will be out of "Time", and skipped or imperfect stitches wjU result and
needles may break. . . . . . . . • ui .
The siae of the rteedle should conform to the sir.e of the thread and both should be suitable to
the material. Use a needle sufficiently large to permit the thread to pass freely through the eye.
In general sewing, use the same siae thread in the bobbin as is used on top.