JUKI AMB-289, Engineer'S Manual

Page: 21 / 177

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1. Loosen cylinder nut , turn cylinder knuckle and adjust so that
the top surface of the top end of cloth presser for sewing flat button
directly to cloth is 18.5 ± 0. 5mm from the top surface of counter
button lower plate with the cylinder sucked. Then tighten cylinder
nut . (For the reference value : 7 mm from end of cylinder boss
to end of knuckle )
o When the height of cloth presser
for sewing flat button directly
to cloth is higher than specified
one, the presser interferes with
chuck click and step-out of top
feed will be caused, or damage
of chuck click will be caused.
Adjustment Procedure Results of Improper Adjustment