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Troubleshooting
Condition
The needle thread
1. The needle thread is not threaded properly.
breaks
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 is not set under the presser foot when start sewing.
6. The fabric is moved too fast when stitching free motion quilting.
7. The thread is tangled around the spool.
The bobbin thread
1. The bobbin thread is not threaded properly in the bobbin holder.
breaks
2. Lint has collected in the bobbin holder.
3. The bobbin is damaged and does not turn smoothly.
The needle breaks
1. The needle is incorrectly inserted.
2. The needle is bent.
3. The needle clamp screw is loose.
4. The needle is too fine for the fabric being used.
5. An inappropriate presser foot is used.
6. The fabric was pulled toward you when sewing free motion quilting
Skipped stitches
1. The needle is incorrectly inserted, bent or blunt.
2. The needle and/or threads are not suitable for the work being sewn.
3. A blue tip needle is not being used for sewing stretch, very fine fabrics
4. The needle thread is not threaded properly.
5. A poor quality needle is used.
6. A purple tip needle is not being used for sewing thick fabrics, denims
Seam puckering
1. The needle thread tension is too tight.
2. The needle thread is not threaded properly.
3. The needle is too heavy for the fabric being sewn.
4. The stitch length is too long for the fabric.
5. The foot pressure is not adjusted properly.
6. A stabilizer is not used when sewing very fine fabrics.
The fabric is not
1. The feed dogs are packed with lint.
2. The stitches are too fine.
feeding smoothly
3. The feed dogs are not raised after "drop feed" sewing.
Loops on the seams 1. The needle thread tension is too loose.
2. The needle is too thick or too fine for the fabric.
The machine does
1. The machine is not plugged in.
not run
2. Thread is caught in the hook race.
3. The start/stop button is used with the foot control plugged in.
Buttonhole sewing
1. The stitch density is not suitable for the fabric being sewn.
is not sewn properly
2. The interfacing has not been used for the stretch or synthetic fabric.
3. The buttonhole lever is not lowered.
The machine is
1. Thread is caught in the hook race.
noisy
2. Lint is built up in the hook race or bobbin holder.
Auto thread cutting
1. Thread is too thick for the auto thread cutting.
failed
2. Threads are caught in the auto thread cutter device.
Pattern selection
1. The needle plate for straight stitch is attached to the machine.
keys are grayed out
2. Dual feed key is on.
3. Floating mode key is on.
4. Twin needle key is on.
5. A.S.R. key is on.
Keys on the visual
1. The key position is out of alignment.
touch screen and
touch panel keys do
not work
with the open-toe foot.
and synthetic fabrics.
and across the hem.
Cause
147
Reference
Pages 30-31
Page 49
Change the needle.
Page 24
Page 39
Page 124
Use the spool
holder.
Page 29
Page 142
Change the bobbin.
Page 24
Change the needle.
Page 24
Page 25
Use the correct foot.
Page 124
Page 24
Page 25
Use the stretch
stitch needle.
Pages 30-31
Change the needle.
Page 25
Page 49
Pages 30-31
Page 25
Make stitch shorter.
Page 50
Apply a stabilizer.
Page 142
Make stitch longer.
Page 37
Page 49
Page 25
Pages 11-12
Page 142
Page 12
Page 60
Apply an interfacing.
Page 58
Page 142
Page 142
Page 16
Page 142
Page 34
Pages 42-43
Page 45
Page 85
Page 125
Page 138
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