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4
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 15
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 19
The upper thread tension is too tight. Loosen the upper thread tension. page 26
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 57, 59
The needle is bent or blunt. Replace the needle. page 20
The needle is incorrectly installed. Correctly install the needle. page 20
The area around the hole in the
needle plate is scratched.
There is a notch (a) on
the left side of the
opening in the needle
plate. This is not a
scratch.
Replace the needle plate.
Contact your retailer or the nearest
authorised service center.
The area around the hole in the
presser foot is scratched.
Replace the presser foot.
Contact your retailer or the nearest
authorised service center.
The bobbin case is scratched, or has a
burr on it.
Replace the bobbin case.
Contact your retailer or the nearest
authorised 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 10
The lower thread
is tangled or
breaks.
You have not wound the bobbin
thread properly.
Wind the bobbin thread properly. page 10
The bobbin is scratched or does not
turn smoothly.
Replace the bobbin.
The thread is tangled.
Remove the tangled thread and clean
the race.
page 57, 59
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 10
Bobbin is set incorrectly. Reset the bobbin thread correctly. page 13, 14
The fabric is
wrinkled.
You have not threaded the upper thread
properly or fitted the bobbin properly.
Thread the upper thread and wind the
bobbin thread properly.
page 13, 14, 15
The spool or spool cap is incorrectly
installed.
Correctly install the spool or spool
cap.
page 15
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 19
The needle is bent or blunt. Replace the needle. page 20
If thin fabrics are being sewn, the
stitch is too long or the fabric is not
being fed correctly.
Sew with the stabilizer material under
the fabric.
page 28
Symptom Possible cause How to put it right Reference
a
67


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