JUKI MB-1373 Engineer's Manual page 17

Adjustment Procedure
1. Turn stop-motion adjusting cam
further.
See "(10) Adjusting the stop-motion position."
2. Bring the machine at the position which is one-stitch before the stop-
motion position.
3. Remove driving pulley pressure applying lever
4. Loosen screw in the stitch adjusting arm. In the state where stitch
adjusting roller comes in contact with portion
adjusting cam , adjust the clearance between stop-motion hook
and stop-motion disc
preventing a play, in the thrusting direction, in the stop-motion
shaft.
(Caution) Do not put the stitch adjusting roller in the recess of the
stitch adjusting cam.
5. Dimension B should be adjusted to 8.5 mm by means of adjusting
nut of the stop-motion spring.
in direction A until it will go no
.
C
to 0.5 to 1 mm. Then tighten setscrew
– 13 –
Results of Improper Adjustment
o If the clearance is larger than 0.5
to 1 mm, unstable entrance into
the stop-motion state will result.
o If the clearance is smaller, the
stop-motion disc may come into
contact with the stop-motion hook
during operation.
of stop-motion
o If the clearance is larger than 8.5
mm, the shock noise of the stop-
motion will be high or stop-motion
hook
o If the clearance is smaller, the
position of stop-motion disc
become unstable at the time of
stop-motion.
will come off.
will