White S-9000AAB - Page 38

Trouble
Probable Cause
Correction
Refer
to
threadino
instructions, see
page
No.
5,
Upper
Thread
Improperly
threaded
and
rethread
macnine.
Breaking
Too
much
tension
Loosen
tension
on
upper
thread
by
turn
jna
0
thread
tension
knob
to lower
number.
Starting
with
take-up
Always
start
sewing
with
take-up
lever
in highest
in incorrect
position
position.
Improper setting
of
Refer
to
needle
setting
instruction, see
page
No.6.
needle
Bent
or
eye
of needle
too
sharp
Try
a
new
needle.
Bent
or
blunt
needle
Discard
all
blunt
or
bent
needles
and
replace
with
new.
Material
Tensions
too
tight See
tension
adjustment,
page
No.
9
Puckering
Dull
needle
Change
needle.
Stitch
length
too
long
Reduce
stitch
length.
Sewing
Stretch
Machine noisy
Set
stitch
length
control
at
Number 5.
Stitch
Material
will
not
feed
37