White Sewing 793 - Page 48

46
Trouble
Probable
Cause
Correction
Refer
to
threading
instructions
see
page
No.
Improperly
threaded
S
and
rethread
machine.
Loosen
tension
on
upper
thread by
turning
Too
much
tension
thread
tension
knob
to
lower number.
Starting
with take
up
Always
start
sewing
with
take
up
lever in
Upper
in
incorrect positon highest
position.
thread
breaking
Improper
setting
of
Refer
to
needle
setting
instructions
see
needle
page
No.
10.
Eye
of
needle too
Try
a
new
needle.
sharp
Discard
all
blunt
or bent
needles and
replace
Bent
or
blunt
needle
with
new.
Tension too
tight
See
tensions
adjustment
page
No.
14.
Material
Dull
needle
Change
needle.
puckering
Stitch
length
too
long
Reduce
stitch
length.
I
I