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g
Use the cleaning brush or a vacuum cleaner to
remove any lint and dust from the race and
bobbin thread sensor and their surrounding
area.
c
a Cleaning brush
b Race
c Bobbin thread sensor
Note
Do not apply oil to the bobbin case.
If lint or dust collects on the bobbin thread
sensor, the sensor may not operate correctly.
h
Insert the bobbin case so that the
the bobbin case aligns with the
race.
• Align the
a
mark
b
mark
c Bobbin case
• Make sure that the indicated points are
aligned before installing the bobbin case.
a
b
mark on
mark on the
a
b
a
b
and
marks.
c
i
Insert the tabs on the needle plate cover into
the needle plate, and then slide the cover back
on.
a Needle plate cover
CAUTION
● Never use a bobbin case that is scratched.
Otherwise, the upper thread may become
tangled, the needle may break or
embroidering performance may suffer.
For a new bobbin case (part code:
XD1855-351), contact your nearest
authorized service center.
● Be sure that the bobbin case is correctly
installed, otherwise the needle may break.
Care and Maintenance 79
a
3
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Table of Contents
Troubleshooting
