JUKI AMS-210E Series Engineer's Manual page 31

Adjustment Procedures
* Turn ON the power once, and turn OFF the power again after
making the intermediate presser in the lowered state.
1. Bring the needle bar
bar connection screw
needle bar with the bottom end of the needle bar lower bushing
2. Change the adjusting position according to needle sizes.
(Caution) Be sure that torque is even after adjustment.
down to the lowest position, loosen the needle
and align the upper engraved line on the
.
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Results of Improper Adjustment