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Seam
puckering
Problem
Cause
Correction
1. The needle thread tension is too tight.
2. The needle thread is not threaded
correctly.
3. The needle is too heavy for the fabric
being sewn.
4. The stitch length is too long for the fabric.
1. Lossen the thread tension.
2. Rethread the machine.
3. Choose a needle to suit the thread and
fabric.
4. Make stitch dense.
Reference
5. If you are sewing thin fabric.
5. Sew with stabiliser material under the fabric.
Patterns are
distorted
1. Select the correct foot.
The sewing
machine
doesn't
operate
The machine
jams
The machine
is noisy
Uneven
stitches,
uneven feed
1. The correct presser foot is not used.
2. The needle thread tension is too tight.
2. Loosen the thread tension .
1. The machine is not turned on.
3. The presser foot lifter is raised.
4. The bobbin winder spindle is in the right
position.
1. Turn on the machine.
3. Lower the presser foot lifter.
4. Return the bobbin winder spindle to the
left position.
Remove the upper thread and bobbin case,
turn the handwheel backwards and forwards
by hand and remove the thread remands.
1. Fluff or oil have collected on the hook or
needle bar.
2. The needle is damaged.
1. Clean the hook and feed dog as described.
2. Replace the needle.
1. Poor quality thread.
2. The bobbin case is threaded wrong.
3. Fabric has been pulled.
1. Select a better quality thread.
2. Remove the bobbin case, the thread and
reinsert correctly.
3. Do not pull on the fabric while sewing, let it
be taken up by the machine.
4. Thread is caught in the hook.
3. Slight humming sound coming from
internal motor.
3. Normal.
5. The feed dogs are packed with lint.
Remove the upper thread and bobbin case,
turn the handwheel backwards and forwards
by hand and remove the thread remands.
1. Thread is caught in the hook.
2. The feed dogs are packed with lint.
2. Connect the power line plug to the electric
outlet.
2. The machine is not plugged in.
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