Operation Manual

APPENDIX
68
Symptom Possible cause How to put it right Reference
Fabric being sewn
with the machine
cannot be removed.
Thread is tangled below the needle
plate.
Lift up the fabric and cut the threads
below it, and clean the race.
page 63
The needle breaks.
The spool or spool cap is incorrectly
installed.
Correctlyinstallthespoolorspoolcap. page 16
The upper thread was not threaded
correctly.
Correcttheupperthreading. page 16
The needle is incorrectly installed. Correctlyinstalltheneedle. page 21
The needle clamp screw is loose.
Usethedisc-shapedscrewdriverto
firmly tighten the screw.
page 21
The needle is bent or blunt. Replace the needle. page 21
Youhavenotusedtherightcombination
of fabric, thread and needle.
Chooseathreadandneedlethatare
appropriate for the type of fabric.
page 20
The presser foot you are using is not
appropriate for the type of stitch that
you want to sew.
Attach the presser foot that is correct
for the type of stitch that you want to
sew.
page 52
The upper thread tension is too tight. Loosen the upper thread tension. page 27
Youarepullingthefabrictoomuch. Lightly guide the fabric. –
The area around the hole in the needle
plate is scratched.
* There is a notch on
the left side of the
opening in the needle
plate. This is not a
scratch.
1 Notch
Replace the needle plate.
Contactyourretailerorthenearest
authorized service center.
–
The area around the hole in the presser
foot is scratched.
Replace the presser foot.
Contactyourretailerorthenearest
authorized service center.
–
The bobbin case is scratched.
Replace the bobbin case.
Contactyourretailerorthenearest
authorized service center.
–
Youhavenotusedabobbinthathas
been designed for this machine.
Incorrect bobbins will not work
properly. Only use a bobbin that has
been designed for this machine.
page 11
The upper thread
breaks.
The upper thread was not threaded
correctly.(forexample,thespoolis
not installed correctly, the spool cap is
too big for the spool being used, or the
thread has come out of the needle bar
threadguide.)
Correcttheupperthreading.Usethe
spool cap that best fits the size of the
spool being used.
page 16
There are knots or tangles in the thread. Remove any knots or tangles. –
The needle is not appropriate for the
thread you are using.
Chooseaneedlethatisappropriatefor
the type of stitch.
page 20
The upper thread tension is too tight. Loosen the upper thread tension. page 27
The thread is tangled, for example, in
the race.
Remove the tangle thread. If the thread
is tangled in the race, clean the race.
page 60, 62
The needle is bent or blunt. Replace the needle. page 21
The needle is incorrectly installed. Correctlyinstalltheneedle. page 21
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