JUKI MB-373 Manual page 23

Adjustment Procedures
™ Loosen two screws 1 and adjust so that the roller of the
knot-tying arm comes in contact with the knot-tying notch
when the needle bar goes up at the fourteenth stitch as high
as 30 to 35 mm above the needle bar upper bushing.
™ If two knot-tying notches are to be installed (without cross-
over stitch), make the aforementioned adjustment at the 6th
and 14th stitches.
™ Make adjustment by loosening two screws 1 of the
connecting plate.
1
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Results of Improper Adjustment
™ If the position is higher than that of
the specified adjustment value,
tightness of stitch at the final stitch
will be weakened.
™ 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.
™ If the clearance is too large,
tightness of knot-tying at the final
stitch will be weakened.
™ If the clearance is too small, the
thread bind plate is likely to come
in contact with the needle.
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