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Troubleshooting guide
Loose
stitches
PROBLEM
CAUSE
CORRECTION
1. The machine is not threaded correctly.
2. The bobbin case is not correctly
threaded.
3. Needle/fabric/thread combination is
wrong.
4. Thread tension wrong.
1. Check the threading.
2. Thread the bobbin case as
illustrated.
3. The needle size must suit the
fabric.
4. Correct the thread tension.
Seams
gather
or pucker
1. The needle is too thick for the fabric.
2. The stitch length is adjusted
incorrectly.
3. The thread tension is too tight.
1. Select a f iner needle.
2. Readjust the stitch length.
3. Loosen the thread tension.
Uneven
stitches,
uneven
feed
1. Poor quality thread.
2. The bobbin case is not correctly
threaded.
3. Fabric has been pulled.
1. Select a better quality thread.
2. Remove bobbin case, rethread
and insert correctly.
3. Do not pull on the fabric while
sewing, let it be taken up by the
machine.
The
machine
is noisy
1. The machine must be lubricated.
2. Fluff or oil have collected on the hook
or needle bar.
3. Poor quality oil has been used.
4. The needle is damaged.
1. Lubricate as described.
2. Clean the hook and feed dog as
described.
3. Only use good quality sewing
machine oil.
4. Replace the needle.
The
machine
jams
1. Thread is caught in the hook.
1. Remove the upper thread and
bobbin case, turn the handwheel
backwards and forwards by hand
and remove the thread remains.
Lubricate as described.
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