Owner's Manual

Maintenance 185
7
3
Use 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.
1 Remove all lint in this area
4
After cleaning is finished, attach the needle
plate in the opposite way that it was removed
in step
2.
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 every time when change the
bobbin.
Use a piece of paper with the thickness of a business
card.
1
Open the hook cover, remove the bobbin
case, and then remove the bobbin. (Refer to
page 18.)
2
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
1
1
Sapphire.book Page 185 Friday, August 1, 2003 9:12 AM