Universal UN50 - Troubleshooting Common Sewing Issues

23
CHECK
UP
FOR
SMOOTH
SEWING
Although
your
sewing
machine
is
designed
for
maximum
efficiency,
should
any
of
the
following
difficulties
occur
they
can
be
remedied
with
minor
adjustments.
Upper
Thread
Breaks
__________
Be
sure
needle
is
inserted
properly.
Check
on
correct
way
to
thread
machine.
Use
correct
needle
size
for
thread.
Do
not
have
upper
tension
too
tight.
Lower
Thread
Breaks
__________
Check
correct
method
of
threading
bobbin
case.
Be
sure
lower
tension
is
not
too
tight.
Needle
Breaks
__________
Do
not
tug
or
pull
on
the
fabric
while sewing
as
this
will
bend
and
eventually
break
the
needle.
Be
sure
presser
foot
is
firmly
attached
to
bar.
Skipped
Stitches
__________
Do
not
use
a
blunt
or
bent
needle.
Insert
needle
correctly.
Use
correct
needle
size for
thread.
Be
sure
pressure
on
foot
is
sufficient
when
sewing
heavy
fabrics.
Stitches
Loop
Make
sure
tensions
are
properly
balanced
and
that
machine
is
threaded
correctly.
Machine
Binds
__________
Clean
thread,
dust and
lint
from
hook, shuttle
and
race.
If
condition
continues,
it
may
be
that
the
machine
is
gummy
with
oil. Apply
kerosene
to
oil
holes,
run rapidly
for
a
while,
and
wipe
dry.
Then
lubricate
again
with
fine
sewing
machine
oil.