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TROUBLESHOOTING
350
List of Symptoms
If you have a minor problem with your sewing machine, check the following solutions. If the solutions
suggested do not correct the problem, contact your authorized dealer. Press → →
for advice about minor sewing problems during sewing. Press at any time to return to
the original screen.
Problem Cause Solution Page
The thread is tangled
on the wrong side of
the fabric.
Upper threading is incorrect. Check the steps for threading the machine
and rethread the machine.
57
Using improper needle or thread for the
selected fabric.
Check the “Fabric/Thread/Needle
Combinations” chart.
69
The upper thread is
too tight.
The bobbin thread is incorrectly installed. Correctly install the bobbin thread. 54
Cannot thread the
needle
Needle is not in the correct position. Press the “Needle Position” button to raise the
needle.
15
Needle is installed incorrectly. Reinstall the needle correctly. 67
Needle is turned, bent or the point is dull. Replace the needle. 67
Cannot lower the
presser foot with the
presser foot lever
Presser foot was raised using the “Presser Foot
Lifter” button.
Press the “Presser Foot Lifter” button to lower
the presser foot.
15
Thread tension is
incorrect
Upper threading is incorrect. Check the steps for threading the machine
and rethread the machine.
57
Bobbin is set incorrectly. Reset the bobbin. (If needle plate was
removed, reinstall needle plate and tighten
screws prior to installing bobbin case.)
54
Using improper needle or thread for the
selected fabric.
Check the “Fabric/Thread/Needle
Combination” chart.
69
Presser foot holder is not attached correctly. Reattach the presser foot holder correctly. 66
Thread tension is set incorrectly. Adjust the thread tension. 79, 233
Bobbin thread is incorrectly wound. Use a correctly wound bobbin. 48
Needle is turned, bent or the point is dull. Replace the needle. 67
Upper thread breaks Machine is not threaded correctly (used the
wrong spool cap, spool cap is loose, the thread
did not catch the needle bar threader, etc.)
Rethread the machine correctly. 57
Needle is turned, bent or the point is dull. Replace the needle. 67
There are scratches on the race. Replace the race, or consult your authorized
dealer.
338
Upper thread tension is too strong. Adjust the thread tension. 79, 233
Using improper needle or thread for the
selected fabric.
Check the “Fabric/Thread/Needle
Combinations” chart.
69
Thread is twisted. Use scissors, etc., to cut the twisted thread
and remove it from the race, etc.
—
There are scratches near the hole of the needle
plate.
Replace the needle plate, or consult your
authorized dealer.
97
There are scratches near the hole in the presser
foot.
Replace the presser foot, or consult your
authorized dealer.
65
Needle is installed incorrectly. Reinstall the needle correctly. 67
Thread is knotted or tangled. Rethread upper and lower thread. 54, 57
A bobbin designed specifically for this machine
is not used.
Incorrect bobbins will not work properly. Only
use a bobbin designed specifically for this
machine.
54
Bobbin thread breaks Bobbin is set incorrectly. Reset the bobbin thread correctly. 54
There are scratches on the bobbin or it doesn’t
rotate properly.
Replace the bobbin. 54
Thread is twisted. Use scissors, etc. to cut the twisted thread
and remove it from the race, etc.
—
A bobbin designed specifically for this machine
is not used.
Incorrect bobbins will not work properly. Only
use a bobbin designed specifically for this
machine.
54