JUKI LU-2810 Series User Manual

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Adjustment procedures Results of Improper adjustment
1) Height of the needle bar
1. Set the stitch dial to “0”.
2. Loosen setscrews
1
of the face plate to remove the face plate
2
.
3. Turn the handwheel to bring so that needle bar
3
is raised
from the lowest dead point of its stroke to dimension A.
4. Loosen clamping screw
4
of the needle bar holder.
At this time, loosen the screw to such an extent that needle bar
3
moves up and down by hand since needle bar
3
drops if
the screw is fully loosened.
5. Move needle bar
3
to adjust so that the distance from the top
end of the needle eyelet to blade point of the hook
7
becomes
dimension B. Then tighten clamping screw
4
of the needle bar
holder.
2) Needle-to-blade point of hook timing
1. Set the stitch dial to “0”.
2. Loosen clamping screw
5
of the lower shaft set collar.
3. Turn the handwheel and when dimensions A and B are approx-
imately obtained, loosen two setscrews
8
of the hook shaft
base. Then move the hook shaft base
9
to the right or left
to adjust so that the clearance between needle
6
and blade
point of the hook
7
is dimension C. Then securely tighten two
setscrews
8
of the hook shaft base.
4. Turn the handwheel to bring so that needle bar
3
is raised
from the lowest dead point of its stroke to dimension A. At this
time, turn the hook
7
in its normal rotational direction so that
center of the needle
6
aligns with blade point of the hook
7
.
5. Tighten clamping screw
5
of the lower shaft set collar.
6. Turn the handwheel to bring so that needle bar
3
is raised
from the lowest dead point of its stroke to dimension A. At this
time, loosen clamping screw
4
of the needle bar holder to ad-
just so that the distance from the top end of the needle eyelet
to blade point of the hook
7
is dimension B. Then tighten again
the clamping screw
4
of the needle bar holder.
7. Set the stitch dial to the maximum and check that needle
6
does not come in contact with blade point of the hook
7
. (For
the dimension, refer to the respective models in the list.)
3) Adjusting the hook needle guard
When a hook has been replaced, be sure to check the position of
the hook needle guard
!0
.
1. As the standard position of the hook needle guard
!0
, the hook
needle guard
!0
must push the side face of needle
6
to lean
the needle by 0.05 to 0.2 mm away from its straight position.
2. If the state of the hook is not as shown above, t the hexagon
wrench
!2
into the needle guard adjusting screw
!1
and adjust
as follows:
1) To bend the hook needle guard
!0
in direction
d
, turn the
needle guard adjusting screw
!1
in direction
D
.
2) To bend the hook needle guard
!0
in direction
e
, turn the
needle guard adjusting screw
!1
in direction
E
.
o
Stitch skipping or thread break-
age will result.
o
Loose stitches will result.
海外講習会用121122LU-2810(-7)EM

JUKI LU-2810 Series Specifications

General

Brand	JUKI
Model	LU-2810 Series
Category	Sewing Machine
Language	English