212
f
Attach the needle plate in the opposite way
that it was removed in step
b
, and then
close the hook cover.
1
Needle plate
Cleaning the bobbin case
Thread wax and dust easily collect around the
hole in the tension-adjusting spring on the bobbin
case, resulting in an incorrect thread tension.
Therefore, it should be cleaned each time when
the bobbin is changed.
Use a piece of paper with the thickness of a
business card.
a
Open the hook cover, remove the bobbin
case, and then remove the bobbin. (Refer to
page 33.)
b
Slide the paper under the tension-adjusting
spring to remove any dust.
Use a corner of the paper to remove any dust from
around the hole.
1
Tension-adjusting spring
2
Hole
3
Paper
c
Use the included cleaning brush to remove
any lint and dust from inside the bobbin
case.
d
After cleaning is finished, insert the bobbin
into the bobbin case and the bobbin case
into the hook, and then close the hook
cover. (Refer to page 33, 34.)
Note
• Do not bend the tension-adjusting spring. In
addition, do not use anything other than
thick paper or paper of the specified
thickness to clean the bobbin case.