Singer 457 - Inserting the Twin Needle; Threading the Machine

TWIN-NEEDLE STITCHING
(Continued)
INSERTING THE TWIN
NEEDLE
The needle clamp accommodates the
twin needle .
To insert the twin needle, simply
loosen the needle clamp screw, re-
move single needle, and insert the
twin needle as instructed on
page 14
.
THREADING FOR TWIN-NEEDLE
STITCHING
For
best results, use No . 50 mercer-
ized thread .
Thread the machine in the same
manner as for single-needle stitch-
ing except :
1 . Be sure that threads are sepa-
rated by center tension
disc as
they
pass around assembly .
2 .
Carry both threads through the
wire loop thread guide above the
needle at the same time .
3 . Carry only one thread through
the last thread
guide before the
needle .