JUKI LK-1910 Engineer's Manual page 15

Adjustment Procedures
1) Lightly press upward intermediate presser bar guide bracket
support plate and tighten the screw in a state that section A
comes in close contact with the bottom face of intermediate
presser bar guide bracket 2.
1) Tighten setscrew 1 so that the protruding amount of
intermediate presser bar 3 from intermediate presser bar guide
bracket 2 is 12.5 mm and needle 4 passes the center of
intermediate presser 5.
(Caution) Keep the tightening torque of setscrew 1 at 390 to
490 N cm (40 to 50 kgf
•
cm).
•
10
− −
Results of Improper Adjustment
™ If section A does not come in
close contact, the intermediate
presser bar guide bracket
support plate is likely to be
broken.
™ If the protruding amount of the
intermediate presser bar is
excessively large, breakage of
the intermediate presser spring
or intermediate presser lifting
failure will occur.
™ If tightening torque is excessive,
the intermediate presser bar is
deformed and maloperation will
occur.