33
LK3-B438E Mark II
q
w
e
r
t
y
o
!1
!0
y
u
i
!0
!3
10-7-1 . Replacing the movable knife and fixed knife
1. Open the large shuttle hook cover, remove the screws
q
and
w
, and then remove the feed plate
e
.
2. Remove the two screws
r
and the two screws
t
, and then remove the needle plate
y
.
3. Remove the thread trimmer connecting rod
u
from the connecting rod lever pin
i
.
4. Remove the movable knife
o
and replace it with a new one. At this time, check that the movable knife
o
and the fixed knife
!0
cut the thread cleanly. If necessary, adjust by using the appropriate movable knife
washer
!1
(supplied as accessories).
* Apply grease to the outside of the collar
!2
at this time.
5. Install the fixed knife
!0
at a distance of 0.5 mm from the needle hole plate
!3
.
6. Place the thread trimming connecting rod
u
onto the connecting rod lever pin
i
, and then install to the
needle plate
y
.
10 . STANDARD ADJUSTMENTS
0.5mm
!2
