JUKI MEB-3200 Engineer's Manual page 13

Adjustment Procedures
1. Remove the cloth cutting knife and plug 3.
2. Turn ON the power to the machine, press the auto key to change
over to the manual operation mode, and press the ready key
to set the manual state.
3. Lower the presser with the presser switch.
At this time, place a piece of paper on the throat plate to check
the needle entry position of the inside needle.
4. Keep pressing the forward key and stop it at the position of the
sewing start.
5. Turn the hand pulley and make the mark of the needle entry
position on the paper. Then return the needle bar to the up-
position (inside needle side).
6. Again, keep pressing the forward key to move to the position
of the sewing end and turn the hand pulley to make the mark of
the needle entry position on the paper.
7. When the needle entry positions (inside) are not aligned with
each other, loosen screw 1 in the rocking link B and turn rocking
link B eccentric shaft 2 to align them.
8. Press the reset key to return to the set position.
(Caution) When adjustment of the stitch base line is performed,
be sure to check "(5) Timing between the needle and the looper
and (6) Clearance between the needle and the looper".
Adjustment Procedures
1. Open stitch width adjust cover 1.
2. Turn the handwheel to bring the needle bar to its lower dead
position.
3. Loosen rocking link B fulcrum shsaft 2.
4. When the stitch bite width is determined, fix rocking link B
fulcrum shaft 2 and close the stitch width adjust cover.
5. When the stitch bite width has been adjusted through the
aforementioned steps, be sure to check the irems "(5) Timing
between the needle and the looper, (6) Clearance between
the needle and the looper, and (8) Installation position of the
spreaders and the timing to open/close the spreaders".
6. After changing the stitch bite width, re-set the set values of the
memory switch and the sewing data. (Memory switch : needle
rocking width, Sewing data : Nos. 17, 18 and 19)
(Caution) The engraved marker dot is the standard of the
needle rocking width. To be correct, measure the stitch
bite width by dropping the needle tip on a sheet of paper
or the like.
Results of Improper Adjustment
Results of Improper Adjustment
™ When moving the fulcrum shaft
in the direction A, the stitch bite
width is increased.
™ When moving the fulcrum shaft
in the direction B, the stitch bite
width is decreased.
9
− −