Singer 15-90 - Page 34

32
HINTS
Belt. See that the belt has the correct tension.
This tension should be only enough to keep the belt
from slipping. If the belt tension is incorrect, loosen
the screw (D, Fig. 5) about one turn and allow the
motor to drop downward until the belt has the
correct tension, then tighten the screw (D).
Machine Working Heavily. If the machine
runs hard after standing idle for some time, use a
little kerosene in the oiling places, run the machine
rapidly, then wipe clean and oil.
To Avoid Breaking the Needles.
See that the
presser foot or attachments are securely fastened by
the thumb screw. Do not sew heavy seams or very
thick goods with too fine a needle. A large needle
and thread to correspond should be used on heavy
work (see inside cover page at back of book).
•
See that the needle is not bent, and avoid pulling
the material when stitching.
Breaking of Needle Thread. If the needle
thread breaks it may be caused by:
Improper threading.
Tension being too tight.
The thread being too coarse for size of needle.
The needle being bent, having a blunt point,
or being set incorrectly.
Bent thread take-up spring.
Breaking of Bobbin Thread.
If the bobbin
thread breaks it may be caused by:
Improper threading of the bobbin case.
Tension being too tight.
Skipping of Stitches. The needle may not be
accurately set into the needle bar or the needle may
be blunt or bent. The needle may be too small for
the thread in use.
Free Instruction
for using the machine is gladly
given at any Singer Shop.
HINTS
Belt.
See that the belt has the correct tension.
This
tension should be only
enough
to keep the belt
from slipping. If the belt tension is incorrect,
loosen
the screw (D, Fig. 5)
about
one
turn
and allow the
motor
to
drop
downward
until
the belt has the
correct tension, then tighten the screw (D).
Machine
Working
Heavily.
If the machine
runs
hard after standing idle for
some
time, use a
little
kerosene in the oihng -places, run the machine
rapidly,
then wipe clean and oil.
To
Avoid
Breaking
the Needles. See that the
presser
foot
or attachments are securely fastened by
the thumb screw. Do not sew heavy seams or very
thick
goods
with
too fine a needle. A large
needle
and
thread to correspond should be used on heavy
work (see inside
cover
page
at back of
book).
See that the
needle
is not bent, and avoid pulling
the material when stitching.
Breaking
of Needle
Thread.
If the
needle
thread
breaks it may be caused by:
Improper threading.
Tension
being too tight.
The
thread being too coarse for size of needle.
The
needle
being bent, having a blunt point,
or being set incorrectly.
Bent
thread take-up spring.
Breaking
of Bobbin
Thread.
If the
bobbin
thread
breaks it may be caused by:
Improper threading of the
bobbin
case.
Tension
being too tight.
Skipping
of
Stitches.
The
needle
may not be
accurately set into the
needle
bar or the
needle
may
be blunt or bent. The
needle
may be too
small
for
the thread in use.
Free
Instruction
for using the machine is gladly
given at any Singer Shop.