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Troubleshooting
A-10
Turn the handwheel to check that the feed dogs move
smoothly and do not contact the edges of the slots in the
needle plate.
1 Correct position of feed dogs
2 Incorrect position of feed dogs
p
Insert the bobbin case so that the mark on the
bobbin case aligns with the
mark on the machine.
• Align the and
marks.
1 mark
2
mark
3 Bobbin case
• Make sure that the indicated points are aligned
before installing the bobbin case.
q
Attach the needle plate cover according to step j in
“Cleaning the race” on page A-2.
r
Check the condition of the needle, and then install it.
If the needle is in a poor condition, for example, if it is
bent, be sure to install a new needle.
• Refer to “Checking the needle” and “Replacing the
needle” in the “Basic operations” section.
■ Checking machine operations
If the needle plate has been removed, check machine
operations to confirm that installation has been completed
correctly.
a
Turn on the machine.
b
Select stitch .
Note
• Be careful not to drop the removed screws in the
machine.
a
b
b
a
CAUTION
• Never use a bobbin case that is scratched,
otherwise the upper thread may become
tangled, the needle may break or sewing
performance may suffer.
• Make sure that you fit the bobbin case
properly, otherwise the needle may break.
CAUTION
• Never use bent needles. Bent needles can
easily break, possibly resulting in injuries.
Note
• After completing this procedure, continue with
the following procedure in “Checking machine
operations” to check that the machine is
operating correctly.
Memo
• Since the needle may have been damaged when
the fabric was caught in the machine, we
recommend replacing it with a new one.
Note
• Do not yet install the presser foot and thread.
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