SINGER 331K4 - Manual (Page 11)

11
THE STOP MOTION DEVICE
Machine 331K1 and 331K4 are regularly fitted
with solid disc (balanced) machine pulley 139724^
without stop motion device.
When required for treadle operation a machine may
be obtained, on specific order, with machine pulley
139725, including a stop motion device, as shown in
Fig. 26.
This device allows machine pulley to turn without
turning arm shaft so that bobbins ma/ be wound and
correct treadling acquired without disturbing the
stitching mechanism.
To loosen the machine pulley, hold pulley with left
hand and, with right hand, turn the stop motion screw
over toward you, as shown in Fig. 26.
Fig. 26. Loosening Machine Pulley
TREADLING
To acquire correct treadling habits, loosen the
machine pulley, as instructed in Fig. 26 and place both
feet squarely but comfortable upon treadle, as instruct­
ed in Fig. 27.
Turn machine pulley over toward you by hand and
at the same time, allow your feet to move freely and
lightly with motion of the treadle.
Continue to do this until a regular, easy movement is
acquired and you are able to stop and restart the
machine without the machine pulley turning in
the wrong direction.
Tighten the stop motion screw and practice sewing
until you have become accustomed to the necessary
motion of hands and feet during the actual operation.
Fig. 27. Position of Feet Upon Treadle
NOTE: The instructions on the following pages are for Service Representatives.
To insure correct timing and avoid unnecessary repetition, these instructions should
be followed in the order given.