Helpful Hints - Singer C440 Instruction Manual

Helpful Hints

PROBLEM CAUSE
Upper thread Machine not properly threaded.
breaks Thread entwined around bobbin.
Needle inserted incorrectly.
Thread tension too tight.
Thread of incorrect size or poor quality.
Lower thread Bobbin threaded incorrectly.
breaks Bobbin wound unevenly or too full.
Dirt or lint in the bobbin holder.
Machine skips Needle inserted incorrectly.
stitches Bent or blunt needle.
Incorrect size of needle.
(on stretch fabric)
Fabric puckers Machine not properly threaded.
Bobbin threaded incorrectly.
Blunt needle.
Thread tension too tight.
Machine makes Bobbin threaded incorrectly.
loose stitches or Machine not properly threaded.
loops Tension not adjusted properly.
Stitch pattern is Presser foot is not suited for the pattern.
distorted Thread tension is not balanced.
Threader does not Needle is not raised to highest position.
thread through Needle inserted incorrectly.
needle eye Bent needle.
Machine does not Feed teeth are lowered.
feed properly Stitch length not suitable for fabric.
Lint and dust accumulated around feed dog.
Needle breaks Fabric pulled while sewing.
Needle is hitting the presser foot.
Needle inserted incorrectly.
Incorrect size needle or thread for fabric
being sewn.
Machine runs with Dirt or lint accumulated in the hook race and
difficulty feed dog.
Machine will not Cord not plugged into electrical outlet.
run Power switch is not turned on.
Presser foot is not lowered.
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.
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