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APPENDIX ————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————
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41
▲ The needle is bent or blunt. Replace the needle. 7
The upper
thread
breaks.
The needle is incorrectly installed. Correctly install the needle. 7
The area around the hole in the needle
plate or the presser foot is scratched.
Replace the needle plate.
Contact your retailer or the nearest
authorized service center.
–
The bobbin case is scratched, or has a burr
on it.
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.
Use a bobbin that has been designed for
this machine.
11
The lower
thread is
tangled or
breaks.
You have not wound the bobbin thread
properly.
Wind the bobbin thread properly. 11
The bobbin is scratched or does not turn
smoothly.
Replace the bobbin. –
The thread is tangled.
Remove the tangled thread and clean
the race.
38
You have not used a bobbin that has been
designed for this machine.
Use a bobbin that has been designed for
this machine.
11
Bobbin is set incorrectly. Reset the bobbin thread correctly. 13
The thread
tension is
incorrect.
You have not threaded the upper thread
properly.
Correct the upper threading. 14
You have not wound the bobbin thread
properly.
Wind the bobbin thread properly. 11
You have not threaded the right
combination of thread and needle for the
fabric you are using.
Choose a thread and needle that are
appropriate for the type of fabric.
17
You have not attached the presser foot
holder properly.
Attach the presser foot holder properly. –
The thread tension is incorrect. Adjust the tension of the upper thread. 22
You have not used a bobbin that has been
designed for this machine.
Use a bobbin that has been designed
for this machine.
11
Bobbin is set incorrectly. Reset the bobbin thread correctly. 13
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.
11-16
You have not fitted the spool properly. Fit the spool properly. 15, 20
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.
17
The needle is bent or blunt. Replace the needle. 7
If thin fabrics are being sewn, the fabric is
not being fed correctly.
Sew with stabilizer material under the
fabric.
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.
30
The thread tension is incorrect. Adjust the tension of the upper thread. 22
Symptom Possible cause How to put it right Page