JUKI MB-1373 Engineer's Manual page 13

Adjustment Procedure
1. Provide a 0.4 to 0.6 mm clearance between nipper block
nipper to prevent nipper
machine is in operation.
2. To adjust the aforementioned clearance, loosen screw
nipper bar block
Adjustment Procedure
(1) Adjusting the stitch selecting mechanism for 8 stitches
To set the number of stitches to eight, loosen stitch adjusting screw
to the position as illustrated. Then, tighten the screw.
(2) Adjusting the stitch selecting mechanism for 16 stitches
When the stitch adjusting screw
the mechanism in the 8-stitch state, loosen stitch adjusting screw
to the position as illustrated. Then, tighten the screw.
(3) Adjusting the stitch selecting mechanism for 32 stitches
When stitch adjusting gear roller
the lower position with the mechanism in the 16-stitch state, mount
stitch number lever
(accessory part).
(Caution) Check to be sure that the stitch adjusting gear roller
mounted on gear (large)
left side of the center of the needle driving pulley shaft
when the roller comes to the upper position with the
mechanism remained in the 16-stitch state.
from holding the threading while the
to the right or left.
is in the left side position with
mounted on large gear
(accessory part) using shoulder screw
is positioned at the one-tooth
Results of Improper Adjustment
and o If the clearance is too large, the
and move o If the clearance is too small, some
Results of Improper Adjustment
is in
– 9 –
thread from the needle will be-
come too short.
types of thread will be broken.