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APPENDIX
List of symptoms
Symptom
The machine is not turned on.
The "Start/Stop" button was not
pressed.
The presser foot lever is raised.
The sewing
machine does not
The "Start/Stop" button was pressed,
operate.
even though the foot controller is
connected.
The bobbin winder shaft is pushed to
the right.
The needle is incorrectly installed.
The needle clamp screw is loose.
The needle is bent or blunt.
The combination of fabric, thread
and needle is not correct.
The presser foot that is used is not
appropriate for the type of stitch that
you wish to sew.
The needle breaks.
The upper thread tension is too tight. Loosen the upper thread tension.
The fabric is pulled too much.
The spool is incorrectly installed.
The area around the hole in the
needle plate is scratched, or has a
burr on it.
The area around the hole in the
presser foot is scratched, or has a
burr on it.
The bobbin case is scratched, or has
a burr on it.
The needle breaks.
A bobbin designed specifically for
this machine is not used.
160
Probable Cause
Remedy
Turn on the machine.
Press the "Start/Stop" button.
Lower the presser foot lever.
Do not use the "Start/Stop" button
when the foot controller is
connected. To use the "Start/
Stop" button, disconnect the foot
controller.
Move the bobbin winder shaft to
the left.
Correctly install the needle.
Use the screwdriver to firmly
tighten the screw.
Replace the needle.
Select a thread and needle that
are appropriate for the type of
fabric being sewn.
Attach the presser foot that is
appropriate for the type of stitch
that you wish to sew.
Lightly guide the fabric.
Correctly install the spool.
Replace the needle plate. Contact
your dealer or the nearest
authorized service center.
Replace the presser foot. Contact
your dealer or the nearest
authorized service center.
Replace the bobbin case. Contact
your dealer or the nearest
authorized service center.
Incorrect bobbins will not work
properly. Only use a bobbin
designed specifically for this
machine.
Reference
page 17
page 52
–
page 52
page 25
page 39
page 38
page 138
page 57
–
page 28
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–
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page 22
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