Brother SB4138 - Manual (Page 152)

APPENDIX
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150
e
Remove the bobbin case.
Grasp the bobbin case, and then pull it out.
a Bobbin case
f
Use the cleaning brush or a vacuum cleaner to
remove any lint and dust from the race and its
surrounding area.
a Cleaning brush
b Race
• Do not apply oil to the bobbin case.
g
Insert the bobbin case so that the S mark on the
bobbin case aligns with the z mark on the machine.
* Align the S and z marks.
a
S
mark
b z mark
c Bobbin case
* Make sure that the indicated points are
aligned before installing the bobbin case.
h
Install the needle plate cover.
The needle plate cover is installed differently
depending on the model.
■ If there is a screw in the needle plate cover
a
Insert the tabs on the needle plate cover into
the needle plate, and then slide the cover back
on.
a Needle plate cover
b
Use the disc-shaped screwdriver to tighten the
screw in the needle plate cover.
■ If there is no screw in the needle plate cover
a
Insert the tabs on the needle plate cover into
the needle plate, and then slide the cover back
on.
a Needle plate cover
i
Install the flat bed attachment in its original
position.
CAUTION
1
a
b
a
b
b a
● Never use a bobbin case that is scratched,
otherwise the upper thread may become
tangled, the needle may break or sewing
performance may suffer. For a new
bobbin case (part code: XC3153-321),
contact your nearest authorized service
center.
● Be sure that the bobbin case is correctly
installed, otherwise the needle may break.
a
a