7.ADJUSTMENT
7-14. Adjusting the thread wiper
<Thread
wiper
height adjustment>
Approx. 2
mm
4680Q
< Thread
wiper
racking width adjustment >
I I I
.I
4681Q
Loosen
the
two screws (2)
and
adjust
the thread wiper
(1)
so that the
clearance between the top
of
the
thread wiper (1)
and
the needle point
is
approximately 2
mm
when the
thread wiper (1)
is
aligned with
the
center
of
the needle.
Note:
Check that the needle bar thread
guide (3) and the thread wiper base
shaft (4) are not touching at this
time.
1.
Remove the back cover.
2.
Loosen the set screw ( 1 )
and
adjust so that the distance
from
the thread wiper
to
the center of
the
needle
is
as shown in
the
illustration.
Approx. 25
mm
Approx.
20
mm
4682Q
4683Q
<Thread
wiper
racking
timing
adjustment>
You
can adjust the thread wiper racking timing to the ideal setting that matches the height. of the work clamp,
in
order to
prevent the thread from getting caught when the work
clamp is lowered.
72
4684Q
1.
Remove the back cover.
2.
Loosen the two screws
(1
),
and
adjust so that the mark
(2)
on
the
cam
is
in
between the two marks (3)
and
(4)
on
the thread wiper
cam.
• If mark (2) is closer to mark (3), the thread wiper will
move below the work clamp when it moves
sideways.
• If mark (2) is closer to mark (4), the thread wiper will
move above the work clamp when it moves
sideways.
3.
After making the adjustment, switch to work clamp
height setting mode and check the thread wiper racking
timing.
Note:
If the mark (2)
is
too close
to
the mark (4), the work clamp
and
the thread wiper may touch.
if
this happens, adjust the
height of the thread wiper. However,
be
careful not to let
the thread wiper and the needle touch each other.
KE-4300, BE-4380
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