Table 9-2.—Relative sizes of needles and thread
Setting the Needle
The same procedure may be followed with this
machine as for the 31-15 sewing machines.
Threading the Machine
Turn the balance wheel toward you until the
thread take-up lever (7) moves up to its highest
position (fig. 9-19). Pass the thread from the
thread stand to the thread post, right to left
through the bottom hole, then right to left
through the top hole. Pass the thread through the
two thread guides (1) and (2). Continue the
passage of thread between the retainer disks (3),
down and under the tension disks (4). Pass the
thread into the loop of the thread take-up spring
(5), under the wire loop (6), up, and from back
to front through the hole in the thread take-up
lever (7). Now pass the thread down through the
thread guide (8), into the slot in the vibrating
presser bar (9), and on down through the thread
239.276
Figure 9-19.—Threading the 7-33 sewing machine.
9-15
