JUKI MB-1373 Engineer's Manual page 33

Adjustment Procedure
1. If roller of the knot-tying arm does not come into contact with
knot-tying notch when staring the sewing machine, loosen screws
and adjust with stopper
needle hole almost aligns with top end
Adjustment Procedure
1. Loosen screws and adjust so that roller
comes in contact with knot-tying notch
bar is as high as 30 to 35 mm (40 to 45 mm when a TQ-7 needle is
used) above the needle bar upper bushing at the fourteenth stitch.
(Caution) If two knot-tying notches
crossover stitch), make the aforementioned adjustment
at the 6th and 14 th stitches.
so that outside periphery
of the knot-tying plate.
of the knot-tying arm
when the ascending needle
are to be installed (without
– 29 –
Results of Improper Adjustment
of the
Results of Improper Adjustment
o If the position is higher than that
of the specified adjustment value,
tightness of the stitch at the last
stitch will be weakened.
o If the position is lower than that of
the specified adjustment value, the
thread bind plate hooks thread
before pulling it up together with
thread already pulled up causing
dirty stitches on the wrong side of
the fabric.