Maintenance 247

7
——
——————————————————————————————————————————————————
—
————————————————————————————————
3Use the included cleaning brush to remove
any lint and dust from the moving knife, the
fixed knife, the thread retaining plate, and
their surrounding areas.
1Remove all lint in this area
4After cleaning is finished, attach the needle
plate in the opposite way that it was
removed in step 2.
1Needle 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.
1Open the hook cover, remove the bobbin
case, and then remove the bobbin. (Refer to
page 36.)
2Slide the paper under the tension-adjusting
spring to remove any dust.
Use a corner of the paper to remove an y dust
from around the hole.
1Tension-adjusting spring
2Hole
3Paper