JUKI MEB-3200 Engineer's Manual page 45

Adjustment Procedures
Remove knife cover 1 and perform adjustment following the
procedure mentioned below.
1. Loosen two setscrews 2.
2. Move counter knife installing base 6 in the direction B and
turn moving knife 3 in the direction of the arrow mark A to
adjust so that the clearance provided between the corner of
the blade section and the top end of counter knife 4 is 2 to 3
mm.
(Caution)
1. When setscrews ! 0 are removed or loosened, the
position of moving knife 3 may change. Perform again
the adjustment.
2. If counter knife 4 comes in one-side contact with the
moving knife, either looper thread or gimp cannot be
trimmed even when the blade pressure is increased.
When performing the aforementioned adjustment,
perform the confirmation of "(18) Adjusting the position
of the looper thread guide plate and the inclination of
the counter knife (S/R types)".
3. When attaching knife cover 1, pay attention to the
position of rubber stopper 9. Adjust so that the stopper
is placed between the edge of moving knife arm 7 which
has returned to the initial position and the inside edge
of knife cover 1 as shown in the figure.
Results of Improper Adjustment
™ I f t h e b l a d e p r e s s u r e i s
excessively high, the service life
of the blade of both knives is
deteriorated. In addition, one-
sided worn-out or breakage of
the blade is apt to occur.
™ I f t h e b l a d e p r e s s u r e i s
excessively low, the blade
contact is unstable and cut-off
of thread (particularly gimp)
occurs.
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