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The upper
thread breaks.
The needle is bent or blunt. Replace the needle. page 16
You have not inserted the needle
properly.
Insert the needle properly. page 16
The area around the hole in the nee-
dle plate is scratched.
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 shuttle race.
page 40
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 11
The thread is
tangled on the
wrong side of
the fabric.
The upper thread was not threaded
correctly.
Correct the upper threading. page 13
The thread ten-
sion is incorrect.
You have not threaded the upper
thread properly.
Correct the upper threading. page 13
You have not wound the bobbin
thread properly.
Wind the bobbin thread properly. page 10
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 15
You have not attached the presser-
foot holder properly.
Attach the presser-foot holder prop-
erly.
page 20
The thread tension is incorrect.
Adjust the tension of the upper
thread.
page 24
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 11
The upper
thread is too
tight.
The bobbin thread is incorrectly
installed.
Correctly install the bobbin thread. page 11
Symptom Possible cause How to put it right Reference