Singer 81K70 - Page 6

R
Needle Threading on Machines
81K70, 81K72, 81K73 and 81K76
(For Two-Thread Stitch)
A machine titled for making the three-thread chain stitch can
he changed to make the two-thread chain stitch by substituting
spread!·r 1326:H for llw right hand looper and applying tension
Un·pad guide 42082,
bracket screw 228J,
take-up 132883
2 and needle t hrrad
eyelet 42()%.
Machine 81K7(J
is rPgularly equip-
ped with thes?
parts, PXct•pting
spreader 1:12631,
and should he
threaded as showu
in Fig. 7when mak-
ing either the two
or three-thread
stitch.
To Thread the
Needle, pass the
thread from the
unwinder clown
through t IH' hole
(1) in tlw tension
hracht, from hack t.o front through the lower hole (2), around the
front lwlW!'!'ll the tension discs (3), thnll'gh the hole (4), from
lw·k to front through tlw hole (G) in the take-up and from front
to hark through the hole (G) in the needle thread Pyelet, down
to Uw right. of thP pin (7), around the left side between tlw rC'-
tairwr discs \H), down inlo the guide (9), a11d from front to haek
t !trough t lw eye of the needle (1 0).
To Thread the Left Hand Looper
(SEE FIGs. 8, \J AND l!l)
Pass lhr! thread from the unwinder down through the hole
(I, Fig. 8) in the bracket at the rear of the machinP, through the
ho]p (2, Fig. 8) in the pull-ofT, through the hole (3, Fig. 8), down
through the hole (1, F'ig. H) in lhe frame top cover, from back to
front through the hole (5, Fig. 8) in the cloth plate extension.
Swing cloth plate (N, Fig. 8) to the lefl. Then pass the thread
up through the hoiP in the extension (fi, Fig. 9), over helwe(•n
t hP tension discs (7, Fig. 9), from back to fronl under the
nipper spring (X, Fig. !l) and through the tube (!l, F'ig. 9), down
1
~
l
l
and from back to
front through the
thread guide (10,
Fig. 9), up and
from back to front -
through the hole
(11, Fig. 10) in
the heel of the left
hand looper, and
from front to back
through the eye
(12, Fig. 10) of the
left hand.looper.
FIG. 10
g
2 3 4
Fto. 8
Fw. 9
Note: The pull-ofT ancl
hraeket (t, 2 and :~. Fig. S)
and the nipper (8, Fig. !l) ;m•
only threaded when mak-
ing the three-thread tight
stitch.
From the library of: Superior Sewing Machine & Supply LLC