Singer C440 LEGACY Instruction Manual and Troubleshooting Guide - Page 45

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Helpful Hints PROBLEM Upper thread breaks Lower thread breaks Machine skips stitches Fabric puckers Machine makes loose stitches or loops Stitch pattern is distorted Threader does not thread through needle eye Machine does not feed properly Needle breaks Machine runs with difficulty Machine will not run CAUSE CORRECTION Page Machine not properly threaded. Thread entwined around bobbin. Needle inserted incorrectly. Thread tension too tight. Thread of incorrect size or poor quality. Re-thread machine. 19 Remove entwined thread and re-thread bobbin. 18 Re-insert needle. 9 Readjust thread tension. 15 Choose correct thread. 9 Bobbin threaded incorrectly. Re-thread the bobbin. 18 Bobbin wound unevenly or too full. Rewind the bobbin. 17 Dirt or lint in the bobbin holder. Clean the holder. 45 Needle inserted incorrectly. Bent or blunt needle. Incorrect size of needle. (on stretch fabric) Re-insert needle. 9 Insert new needle. 9 Choose correct size needle for fabric. 9 (use stretch needle) Machine not properly threaded. Re-thread machine. 19 Bobbin threaded incorrectly. Re-thread the bobbin. 18 Blunt needle. Insert new needle. 9 Thread tension too tight. Readjust thread tension. 15 Bobbin threaded incorrectly. Re-thread the bobbin. 18 Machine not properly threaded. Re-thread machine. 19 Tension not adjusted properly. Readjust thread tension. 15 Presser foot is not suited for the pattern. Attach correct foot. 8 Thread tension is not balanced. Adjust the thread tension. 15 Needle is not raised to highest position. Raise the needle. 20 Needle inserted incorrectly. Re-insert needle. 9 Bent needle. Insert new needle. 9 Feed teeth are lowered. Raise the feed teeth. 12 Stitch length not suitable for fabric. Adjust stitch length. 14 Lint and dust accumulated around feed dog. Clean the feed dog area. 45 Fabric pulled while sewing. Do not pull fabric. 21 Needle is hitting the presser foot. Select correct foot and pattern. 24- Needle inserted incorrectly. Re-insert needle. 9 Incorrect size needle or thread for fabric Choose correct size needle and thread. 9 being sewn. Dirt or lint accumulated in the hook race and Remove the needle plate and bobbin holder 45 feed dog. and clean the hook race. Cord not plugged into electrical outlet. Insert plug fully into outlet. 10 Power switch is not turned on. Turn on the switch. 10 Presser foot is not lowered. Lower the foot. 12 MAINTENANCE

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Helpful
Hints
PROBLEM
CAUSE
CORRECTION
Page
Upper
thread
Machine
not
properly
threaded.
Re
-thread
machine.
19
breaks
Thread
entwined
around
bobbin.
Remove
entwined
thread
and
re
-thread
bobbin.
18
Needle
inserted
incorrectly.
Re-insert
needle.
9
Thread tension
too
tight.
Readjust
thread
tension.
15
Thread
of
incorrect
size
or
poor
quality.
Choose
correct
thread.
9
Lower
thread
Bobbin
threaded
incorrectly.
Re
-thread
the
bobbin.
18
breaks
Bobbin
wound
unevenly
or
too
full.
Rewind
the
bobbin.
17
Dirt
or
lint
in
the
bobbin
holder.
Clean
the
holder.
45
Machine
skips
Needle
inserted
incorrectly.
Re-insert
needle.
9
stitches
Bent
or
blunt
needle.
Insert
new
needle.
9
Incorrect
size
of
needle.
Choose
correct
size
needle
for
fabric.
9
(on
stretch
fabric)
(use
stretch
needle)
Fabric
puckers
Machine
not
properly
threaded.
Re
-thread
machine.
19
Bobbin
threaded
incorrectly.
Re
-thread
the
bobbin.
18
Blunt
needle.
Insert
new
needle.
9
Thread
tension
too
tight.
Readjust
thread
tension.
15
Machine
makes
Bobbin
threaded
incorrectly.
Re
-thread
the
bobbin.
18
loose
stitches
or
Machine
not
properly
threaded.
Re
-thread
machine.
19
loops
Tension
not
adjusted
properly.
Readjust
thread
tension.
15
Stitch
pattern
is
Presser
foot
is
not
suited
for
the
pattern.
Attach
correct
foot.
8
distorted
Thread
tension
is
not
balanced.
Adjust
the
thread
tension.
15
Threader
does
not
Needle
is
not
raised
to
highest
position.
Raise
the
needle.
20
thread
through
Needle
inserted
incorrectly.
Re-insert
needle.
9
needle
eye
Bent
needle.
Insert
new
needle.
9
Machine
does
not
Feed
teeth
are
lowered.
Raise
the
feed
teeth.
12
feed
properly
Stitch
length
not
suitable
for
fabric.
Adjust
stitch
length.
14
Lint
and
dust
accumulated
around
feed
dog.
Clean
the
feed
dog
area.
45
Needle
breaks
Fabric
pulled
while
sewing.
Do
not
pull
fabric.
21
Needle
is
hitting
the
presser
foot.
Select
correct
foot
and
pattern.
24
-
Needle
inserted
incorrectly.
Re-insert
needle.
9
Incorrect
size
needle
or
thread
for
fabric
being
sewn.
Choose
correct
size
needle
and
thread.
9
Machine
runs
with
Dirt
or
lint
accumulated
in
the
hook
race
and
Remove
the
needle plate
and
bobbin
holder
45
difficulty
feed
dog.
and
clean
the
hook
race.
Machine will
not
Cord
not
plugged
into
electrical
outlet.
Insert
plug
fully
into
outlet.
10
run
Power
switch
is
not
turned
on.
Turn
on
the
switch.
10
Presser
foot
is
not
lowered.
Lower
the
foot.
12
MAINTENANCE