White 1550 - Sewing Problem Diagnosis; Stitch Skipping and Unevenness; Needle and Thread Break Issues

PROBLEMS
— and
PROBABLE
CAUSES
In
most
cases,
poor
sewing
results
are
due
to
a
damaged
needle.
Always
examiT
needle
first
before
checking
other
items.
1.
SKIPPING
STITCHES
bent
or
blunt
needle
*
wrong
size
needle
needle
inserted
incorrectly
*
upper
thread
tension
too
tight
pressure
on
presser
foot
too
light
2.
UNEVEN
STITCHES
bent
or
blunt
needle
wrong
size
needle
incorrect
threading
pulling
fabric
while
sewing
upper
thread
tension
too
loose
pressure
on
presser
foot
too
light
*
loose
presser
foot
bobbin
wound
unevenly
bobbin
inserted
incorrectly
in
case
3.
NEEDLE
BREAKS
bent
needle
touches
needle
plate
or
presser
foot
*
needle
inserted
incorrectly
*
pulling
fabric
while
sewing
*
loose
presser
foot
touches
needle
*
needle
too
fine
for
fabric
turning
Pattern
Selector
dial
with
needle
in
fabric
4.
UPPER
THREAD
BREAKS
bent
or
blunt
needle
incorrect
threading
*
upper
tension
too
tight
needle
inserted
incorrectly
needle
touches
presser
foot
needle
eye
has
sharp
edges
poor
quality
thread
*
knots
in
thread
*
starting
to
stitch
too
fast
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