Singer C440 User Manual

45
MAINTENANCE
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
difculty
Machine will not
run
Helpful Hints
CORRECTION
Re-thread machine.
Remove entwined thread and re-thread bobbin.
Re-insert needle.
Readjust thread tension.
Choose correct thread.
Re-thread the bobbin.
Rewind the bobbin.
Clean the holder.
Re-insert needle.
Insert new needle.
Choose correct size needle for fabric.
(use stretch needle)
Re-thread machine.
Re-thread the bobbin.
Insert new needle.
Readjust thread tension.
Re-thread the bobbin.
Re-thread machine.
Readjust thread tension.
Attach correct foot.
Adjust the thread tension.
Raise the needle.
Re-insert needle.
Insert new needle.
Raise the feed teeth.
Adjust stitch length.
Clean the feed dog area.
Do not pull fabric.
Select correct foot and pattern.
Re-insert needle.
Choose correct size needle and thread.
Remove the needle plate and bobbin holder
and clean the hook race.
Insert plug fully into outlet.
Turn on the switch.
Lower the foot.
CAUSE
Machine not properly threaded.
Thread entwined around bobbin.
Needle inserted incorrectly.
Thread tension too tight.
Thread of incorrect size or poor quality.
Bobbin threaded incorrectly.
Bobbin wound unevenly or too full.
Dirt or lint in the bobbin holder.
Needle inserted incorrectly.
Bent or blunt needle.
Incorrect size of needle.
(on stretch fabric)
Machine not properly threaded.
Bobbin threaded incorrectly.
Blunt needle.
Thread tension too tight.
Bobbin threaded incorrectly.
Machine not properly threaded.
Tension not adjusted properly.
Presser foot is not suited for the pattern.
Thread tension is not balanced.
Needle is not raised to highest position.
Needle inserted incorrectly.
Bent needle.
Feed teeth are lowered.
Stitch length not suitable for fabric.
Lint and dust accumulated around feed dog.
Fabric pulled while sewing.
Needle is hitting the presser foot.
Needle inserted incorrectly.
Incorrect size needle or thread for fabric
being sewn.
Dirt or lint accumulated in the hook race and
feed dog.
Cord not plugged into electrical outlet.
Power switch is not turned on.
Presser foot is not lowered.
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Singer C440 Specifications

General

Brand	Singer
Model	C440
Category	Sewing Machine
Language	English