JUKI LU-2810 Series, Engineer'S Manual

Page: 33 / 84

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Adjustment procedures Results of Improper adjustment
3) Top feed cam timing
1. Set the stitch dial to “6”.
2. Set the alternate vertical dial to “3”.
3. Loosen setscrews of the top cover to remove the top cover.
4. Loosen two setscrews
1
of the top feed cam.
5. Turn the top feed cam
1
to the position where four points of
top end of the needle
2
, top surface of the throat plate
3
,
under surface of walking foot
4
and top surface of feed dog
5
are aligned with one another under the condition that the
amount of alternate vertical movement is equal.
6. Tighten two setscrews
1
of the top feed cam.
7. Attach the top cover.
(Standard) When four points of top end of the needle
2
, top
surface of the throat plate
3
, under surface of
walking foot
4
and top surface of feed dog
5
are
aligned with one another, the setscrew No. 2 of the
top feed cam
6
is visible from the position between
the alternate vertical change base and the machine
frame.
o
Pitch error at high or low speed
is apt to occur.
海外講習会用121122 LU-2810(-7)̲EM