White 766 - Page 29

27
Correction
Refer
to threading
instructions
see
page
No.
8 and
rethread
machine.
Loosen
tension
on
upper
thread
by
turning
thread
tension
knob
to lower
number.
Always
start
sewing
with
take
up
lever
in
highest
position.
Refer
to
needle
setting
instructions
see
page
No.
6.
Try
a
new
needle.
Discard
all
blunt
or
bent
needles
and
replace
with
new.
See
tensions
adjustment
page
No.
10.
Change
needle.
Reduce
stitch
length.
Move
bobbin
winder
to
off
position
away
from
hand
wheel.
Trouble
Upper
thread
breaking
up
in
Probable
Cause
Improperly
threaded
Too
much
tension
Starting
with
take
incorrect
position
Improper setting
of
needle
Eye
of needle
too
sharp
Bent
or
blunt
needle
Tensions
too
tight
Dull
needle
Stitch
length
too
long
Bobbin
winder
near
hand
wheel.
Material
puckering
Machine
not
operating