White 1766 - Troubleshooting Common Issues

TROUBLE-SHOOTING
GUIDE
1.
Bobbin
case
is
not
inserted
correctly.
2
Bobbin
case
is
improperly
threaded.
3
Bobbin
tension
is
too
tight
1
Needle
is
not
inserted
correctly.
2
Needle
is
damaged
3
Wrong
type
of
needle
is
used.
4.
Wrong
foot
is
used
5
Fool
pressure
is
wrong
1.
Needle
is
damaged
2.
Needle
is
not
inserted
correctly
3.
Fabric
too
heavy/wrong
needle
size
4
Fabric
is
being
pulled
by
operator
5
Wrong
sewing
foot
is
used
1
Needle
is
nat
threaded
correctly.
2.
Bobbin
is
not
threaded
correctly.
3
Needle/fabric/thread
ratio
is
incorrect
4
Incorrect
tensions
1
Foot
pressure
is
too
heavy
2.
Needle
is
too
large
for
fabric
3.
Wron 9
stitch
tengtk
is
used
4
Tension
is
too
heavy
I
Thread
isof
poor
quality
2
Fool
pressure
is
too
light
3.
Bobbin
is
threaded
‘ncorrectly
4.
Material
is
being
pulled
by
operator.
I
Machine
needs
oil.
2
Lint
and
oil
residue
have
collected
in
hook
or
on
needle
bar.
3
Inferior
oil
has
been
used
and
gums-up
machine.
1.
Reposition
bobbin.
Check
by
pulling
thread.
If
it
pulls
smoothly
it
is
correct.
2.
Check
for
correct
threading.
3
Change
bobbin
tension
according
to
instructions.
1.
Reinsert
needle
(flat
side
toward
back).
2.
Insert
new
needle.
3.
Match
needle
size
to
fabric
and
thread
weight.
4.
Check
to
see
if
proper
sewing
foot
is
used.
5.
Check
foot
pressure
regulation
for
proper
setting.
1.
Insert
new
needle.
2
Reinsert
needle
correctly
(flat
side
toward
back).
3.
Match
needle
size
to
thread
fabric
weight.
4.
Do
not
pull
on
cloth.
Check
for
proper
foot
pressure.
5.
Use
correct
foot.
1
Thread
needle
front
to
back.
2.
Thread
bobbin
according
to
chart
3.
Match
needle
size
to
thread
&
fabric
weight.
4.
Set
correct
tensions.
1
Reduce
foot
pressure
(smaller
numbers).
2.
Use
smaller
needle.
3..
Adjust
length
for
proper
stitches.
4.
Check
tensions.
____________________
1.
Use
quality
threadf
2
Increase
foot
pressure
(larger
numbers)
3
Thread
bobbin
again
and
check
for
proper
insertion.
4.
Do
not
pull
on
fabric
Let
it
feed
automatically.
________
1.
Oil
according
to
instructions
7.
Clean
race
arid
hook
according
to
instructions.
3.
Clean
and
oil
again
only
with
tine
sewing
machine
o/
(not
3-in-I
oil)
4.
Replace
needle.
5.
Consult
your
specialist
dealer.
Lower
thread
breaks
CONDI1ON
REMEDY
1.
Machine
is
threaded
incorrectly.
j
1.
Rethreod
machine
and
needle.
2
Tension
is
too
tight
2.
Reduce
tension
on
top
(smaller
numbers)
3.
Thread
is
too
heavy
for
needle
size.
I
3.
Use
larger
needle.
Top
thread
4.
Needle
is
inserted
incorrectly
4.
Reinsert
needle
(flat
side
toward
back).
5.
Thread
mojboht
on
reel
holder.
5.
Remove
spool,
rewind
excess
thread.
6
Needle
is
.
6.
Insert
new
needle.
Skipped
stitches
Needle
breakage
Stitching
forms
loops
Seams
shrink
or
pucker
Irregular
stitching/feeding
Machine
is
noisy
and
rough
C’4
4
Needle
is
donoged
5.
Machine
requires
servicing.