Singer Sewing Machine, Instruction Manual

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PREFACE
This is a semi–industrial sewing
machine that makes a single needle
lock stitch and is equipped with a high
lifting, independent upper and lower
feed mechanism. This machine is
intended for stitching medium, heavy
and extra heavy materials including
canvas, upholstery materials and light
weight leather. It can also be used
for home sewing where even feed on
both the upper and lower threads are
necessary.
The Semi-Industrial Sewing Machine’s
feeding mechanism is composed of
upper and lower feed dogs which are
synchronized to feed the material
either forward or reverse. Both lifting
and feeding feet alternately press the
material tightly together, permitting
even stitching.
36 5
HELPFUL HINTS
REASONS CORRECTIONS
WHEN THE SHUTTLE HOOK BECOMES JAMMED
It occasionally happens that
loose threads become
entangled and impede
the free movement of the
shuttle race. a) Remove the bobbin case.
b) Push the pins sideways.
c) Remove the shuttle cover
from the shuttle.
d) Remove the shuttle hook, and
brush off all thread, lint, etc.,
e) Insert the shuttle hook, and
the shuttle cover which is
inserted in its slot to pin of
shuttle.
f) Push the pins back to their
original position.
WHEN THE MACHINE RUNS HEAVILY
If the machine runs sluggishly after standing idle for some time,
apply a drop of kerosene in place of oil. Run the machine rapidly
to clean. Then oil the machine.
WHEN THE MACHINE RUNS HEAVILY FOR OTHER
REASONS.
a) The motor belt is too
tight.
b) Bobbin winder is not
released.
c) Thread is caught in the
shuttle race.
d) Machine is lubricated
with unsuitable gummy
oil.
a) Loosen belt
b) Push bobbin winder to the left.
c) Clean the shuttle
d) (1) Place a few drops of kerosene
into each oil hole and run the
machine for a few minutes.
(2) Lubricate with proper sewing
machine oil.