Problem
Cause
Correction
Reference
Seam
puckering
Patterns are
distorted
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. 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. Lossen the thread tension.
2. Rethread the machine.
3. Choose a needle to suit the thread and
fabric.
4. Make stitch dense.
The sewing
machine
doesn't
operate
1. The machine is not turned on.
2. The presser foot lifter is raised.
1. Turn on the machine.
2. Lower the presser foot lifter.
The
machine
jams
Remove the upper thread and bobbin case,
turn the hand wheel backwards and forwards
by hand and remove the thread remands.
The
machine is
noisy
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.
Uneven
stitches,
uneven feed
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 hand wheel 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.
3. Connect the power line plug to the electric
outlet.
3. The machine is not plugged in.
Seam
gather or
pucker
1. The needle is too thick for the fabric.
2. The stitch length is adjusted wrong.
3. The thread tension is too tight.
1. Select a finer needle.
2. Readjust the stitch length.
3. Loosen the thread tension.
17
28
32
32
12
17
30
-
32
16
-
17
11
9
8
20
8
76
76
76
5. If you are sewing thin fabric.
5. Sew with stabiliser material under the
fabric.
17
APPENDIX
79
