Remove the upper thread and
bobbin case, turn the handwheel
backwards and forwards and
remove the thread remands.
Seam gather
or pucker
Seam
puckering
Patterns are
distorted
The
machine is
noisy
The
machine
jams
1. The needle is too thick for the
fabric.
2. The stitch length is wrong.
3. The thread tension is too tight.
1. Select a finer needle.
2. Readjust the stitch length.
3. Loosen the thread tension.
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.
5. If you are sewing on thin fabric.
1. Loosen the thread tension.
2. Rethread the machine.
3. Choose a needle to suit the
thread and fabric.
4. Make the stitch length shorter.
5. Sew with a stabiliser material
under the fabric.
1. The correct presser foot is not
used.
2. The needle thread tension is too
tight.
1. Select the correct foot.
2. Loosen the thread tension.
1. Thread is caught in the hook.
2. The feed dogs are packed with
lint.
Remove the upper thread and
bobbin case, turn the handwheel
backwards and forwards and
remove the thread remnants.
1. Flu or oil have collected on the
hook or needle bar.
2. The needle is damaged.
3. Slight humming sound coming
from internal motor.
4. Thread is caught in the hook.
5. The feed dogs are packed with
lint.
1. Clean the hook and feed dog.
2. Replace the needle.
3. Normal.
Needle
breaks
1. The machine is not correctly
threaded.
2. The bobbin case is not threaded
correctly.
3. Needle/ fabric/ thread
combination is wrong.
4. The thread tension is wrong.
1. Check the threading.
2. Thread the bobbin case as
illustrated.
3. The needle size must suit the
fabric and thread.
4. Correct the thread tension.
Loose
stitches
Trouble shooting guide
7. The upper thread tension is too
tight.
7. Loosen the upper thread
tension.
24
15
13
21
24
24
21
30
24
15
21
30
29
24
-
53
53
20
-
53
Problem Cause Correction Reference
56
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