Cleaning The Bobbin Case - Brother PR670E Operation Manual

f Attach the needle plate in the opposite way
that it was removed in step
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.)
212
b
b
, and then
c
d
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
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.
Use the included cleaning brush to remove
any lint and dust from inside the bobbin
case.
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.)