Operation Manual

CARE AND MAINTENANCE
Appendix
203
7
)
Insert the bobbin case so that the projection
on the bobbin case aligns with the spring.
a Projection
b Spring
*
Insert the tabs on the needle plate cover
into the needle plate, and then slide the
cover back on.
Cleaning the Bobbin Case
Thread wax and dust easily collect around the
notch in the tension spring on the bobbin case,
resulting in an incorrect thread tension. Therefore,
the bobbin case should be cleaned as necessary
should tension problems arise.
When cleaning the bobbin case, use card stock or
another type of paper of similar thickness and
sturdiness in order to prevent pieces of paper
tearing off and getting lodged in the bobbin case.
!
Follow steps “Cleaning the Race” on page
202.
"
Using a piece of paper of adequate
thickness and sturdiness, slide the paper
between the tension plate base and the
tension spring and also slide the paper
behind the notch of the spring to remove
any dirt or dust.
a Tension plate base
b Notch
c Paper (e.g. business card type)
d Tension spring
e Bobbin case projection (stopper)
#
Use the included cleaning brush to remove
any lint and dust from inside the bobbin
case.
$
Reinsert the bobbin case and needle plate
cover assuming the bobbin case projection
(stopper) is touching the bracket spring.
(Follow steps
) and * from the previous
section.)
Note
• 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: XC3153-051 (green screw),
XC8167-051 (pink screw)), contact your
nearest authorized retailer.
• Be sure that the bobbin case is correctly
installed. Otherwise, the needle may break.
b
a
a
b
Memo
Do not bend the tension spring. In addition, do
not use anything other than recommended
paper to clean the bobbin case.
c
b
a
d
a
d
e