Brother PR-600 - Manual (Page 204)

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