SINGER 401 - Manual (Page 5)

NEEDLE AND THREAD SELECTION
The selection of thread should be based on the fabric to be stitched. The thread should blend with
the fabric in colour, fibre and size.
Silk and wool fabrics should be stitched with silk thread; cotton fabrics should be stitched with cotton
or cotton mercerised thread, etc. The thread must be of a size that will imbed itself into the texture of the
fabric. Thread that is too heavy for the fabric will remain on the surface and become weakened by fric­
tion and abrasion.
The selection of the needle should be based on both the fabric and thread being used. The eye of the
needle must be large enough for the thread to pass freely through it. The blade of the needle must be fine
enough not to mar the fabric with too large a puncture, yet heavy enough to pierce the fabric without
binding or deflecting.
You will obtain best stitching results from your Sewing Machine if it is fitted with a SINGER* Needle.
5
NEEDLES AND THREAD
This machine uses a 15 X 1 needle.
Sizes 9, 11, 14, 16 and 18.
For perfect stitching, select correct needle
and thread to correspond with fabric (see
page 5).
Be sure to use like threads for both needle
and bobbin.
NEEDLE INSERTION
Raise the needle bar to highest point by
turning the hand wheel toward you. Loosen
the needle clamp screw. Insert needle
upward into clamp as far as it will go, with
the flat side of the needle to the back and
the long groove toward you. Tighten needle
clamp screw.
6