JUKI DP-2100 Engineer's Manual page 23

Adjustment Procedures
1. Remove the side plate, and loosen setscrews 3 in stopper
installing plate 4.
2. Move stopper installing plate 4 in the direction of the arrow
mark, and adjust the clearance between presser lifter link 1
and feed foot bar connection 2 to 0.1 to 0.3 mm. Then tighten
setscrews 3.
Adjustment Procedures
1. Loosen lock nut 1.
2. Turn knob 2 until it will turn no further in the direction of A.
(Set throttle valve 4 to the state that it is fully closed.)
3. Turn knob 2 four times in the direction of B.
(Set throttle valve 4 to the state that it is opened four times
from the state that it is fully closed.)
4. Tighten lock nut 1.
Results of improper Adjustment
™ When the clearance is excessively
wide, a big noise occurs when the
auto-lifter goes up.
Results of improper Adjustment
™ When the opening amount of the
throttle valve is larger than the
specified value :
1.Feed foot, presser foot, needle
2.The life of the respective feed
™ When the opening amount of the
throttle valve is smaller than the
specified value :
1.The force to feed material is
2.The lifting amount of auto-lifter is
− 19 −
hole guide, etc. will break.
belts is shortened.
deteriorated immediately after
the motion of auto-lifter.
decreased.