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Troubleshooting
E
Condition
The needle thread
breaks+
Cause
1. The needle thread is not threaded properly,,
2. The needle thread tension is too tight.
3. The needle is bent or blunt.
4+The needle is incorrectly inserted.
5. The needle thread and the bobbin thread are not set properly
under the presser foot when sewing is starting.
6. The fabric is not drawn to the rear when sewing is finished +
7, The thread is too heavy or too fine for the needle.
Reference
Page 26
Pages 28, 30
Page 10
Page 10
Pages 28,38
Page 38
Page 16
The bobbin thread 1. The bobbin thread is not threaded properly in the bobbin holder Page 24
breaks. 2+ Lint has collected in the bobbin holder. Page 90
3+The bobbin is damaged and doesn't turn smoothly, Change the bobbin
The needle breaks.
Skipped stitches
Seam puckering
The cloth is not
feeding smoothly,
The machine
doesn't work+
Patterns are
distorted,
Noisy operation
I+ The
2. The
3+ The
4+ The
5. The
6+ The
.........ii The
2, The
3+
,,
,,
6+
needle is incorrectly inserted.
needle is bent or blunt°
needle clamp screw is loose.
needle thread tension is too tight+
fabric is not drawn to the rear when sewing is finished.
needle is too fine for the fabric being sewn+
needle is incorrectly inserted+
needle is bent or blunt.,
The needle and!or threads are not suitable for the work being
sewn.
A blue needle is not being used for sewing stretch, very fine
fabrics and synthetics,,
The needle thread is not threaded properly+
The wrong needle is used.
!+ The
2+The
3. The
4. The
needle thread tension is too tight+
needle thread is not threaded properly,,
needle is too heavy for the fabric being sewn.
stitch length is too long for the fabric,
I. The stitches are too fine+
2+,The feed dog is not raised after "drop feed" sewing+
3+The feed dog is packed with lint.,
1. The machine is not plugged in,,
2+A thread is caught in the shuttle race,,
3,,Push-clutch is disengaged,,
1oThe stitch is not balanced.
1+There is thread caught in the hook race+
2. Lint has built up in the shuttle or the shuttle race+
Page 10
Page 10
Page 10
Pages 28,30
Page 38
Page 16
Page 10
Page 10
Page 16
Page 16
Page 26
Changethe needle
Pages 28,30
Page 26
Page 16
Make stitch denser
Make stitch coarser
Page 46
Page 94
Page 6
Page 92
Pages 24
Page 36
Page 92
Page 92
94
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