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Troubleshooting
A-6
Pull the thread to pass it through the slit in the needle
plate cover, then cut it with the cutter.
3 Slit
4 Cutter
Sewing with the correct thread tension is possible after
the bobbin has been correctly installed in the bobbin
case.
Tangled thread on wrong side of fabric
■ Symptom
• The thread becomes tangled on the wrong side of the
fabric.
• After starting sewing, a rattling noise is made and
sewing cannot continue.
• Looking under the fabric, there is tangled thread in
the bobbin case.
■ Cause
Incorrect upper threading
If the upper thread is incorrectly threaded, the upper
thread passed through the fabric cannot be firmly pulled
up and the upper thread becomes tangled in the bobbin
case, causing a rattling noise.
■ Remedy/check details
Remove the tangled thread, and then correct the upper
threading.
a
Remove the tangled thread. If it cannot be removed,
cut the thread with scissors.
• For details, refer to “Cleaning the race” on page A-2.
b
Remove the upper thread from the machine.
• If the bobbin was removed from the bobbin case,
refer to “Installing the bobbin” in the “Basic
operations” section and “Remedy/check details” in
the section “Upper thread tightened up” on page A-5
to correctly install the bobbin.
c
Refer to the following steps to correct the upper
threading. Raise the presser foot using the presser foot
lever.
1 Presser foot lever
The upper thread shutter opens so the machine can
be threaded.
• If the presser foot is not raised, the machine cannot
be threaded correctly.
d
Press (Needle position button) once or twice to
raise the needle.
The needle is correctly raised when the mark on the
handwheel is at the top, as shown below. Check the
handwheel and, if this mark is not at this position,
press (Needle position button) until it is.
1 Mark on handwheel
e
Turn off the machine.
1
1
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