JUKI LS-1340, Manual

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Adjustment Procedures Results of Improper Adjustment
2) Top feed cam timing
™ In case of LS-1340 and LS-1341
1. Set the stitch dial to “6 mm”.
2. Adjust the amount of alternate vertical movement to the
standard value.
(Refer to the item “10) Feed motion”.)
3. Loosen two setscrews
1
in the top feed cam.
4. Turn top feed cam
5
to the position where three points of needle
tip
2
, top surface
3
of the throat plate and walking foot
4
(pressing face) are aligned with one another on condition that
the amount of alternate vertical movement of both the walking
foot and the presser foot is equal.
5. Securely tighten setscrews
1
in the top feed cam.
(Standard) The screw No. 2 in top feed cam
5
faces in the
direction of the arrow mark. (In the direction of the small
end of top feed cam rod
6
)
™ In case of LS-1342 and LS-1342-7
1. Set the stitch dial to 6 mm.
2. Set the alternate vertical dial to “2”.
3. Remove the setscrews in the window plate, remove window
plate E (LS-1342) or window plate F (LS-1342-7) and window
plate packing E.
4. Loosen two setscrews
7
in the top feed cam.
5. Turn top feed cam
!1
to the position where three points of top
end
8
of the needle eyelet, top surface
9
of the throat plate
and walking foot
!0
(pressing face) are aligned with one another
on condition that the amount of alternate vertical movement of
both the walking foot and the presser foot is equal.
6. Securely tighten setscrews
7
in the top feed cam.
(Standard) When the screw No. 2 in top feed cam
!1
faces
almost right above, the screw No. 1 in top feed cam
!1
faces
in the direction of the arrow mark.
™
Pitch error at high or low speed
will be deteriorated.