JUKI MO-6000S series Engineer's Manual page 13

Adjustment Procedures
1) Take off the upper cover, loosen setscrew 2 of needle driving
forked crank 1 and move needle driving forked crank 1 up or
down to adjust the needle height.
(Caution) Do not fully loosen the setscrew 2 of the needle
driving forked crank 1.
If the needle driving forked crank has got out of position
laterally when its setscrew was loosened, fully loosen the
setscrew and turn pulley to allow the forked crank to turn
until it settles by itself. Then tighten the setscrew to fix the
forked crank at that position.
1) Loosen setscrews 2 of throat plate base 1 and move throat
plate base 1 back and forth to adjust dimension A or B.
1
1
2
Needle driving shaft
2
Results of Improper Adjustment
™ Any other needle height than
specified here will badly affect
the action of the lower looper,
the timing for catching the upper
looper thread, etc.
™ Improper lateral position of the
needle driving forked crank will
cause seizure, play, or other
troubles.
™ Improperly positioned throat
p l a t e w i l l c a u s e n e e d l e
b r e a k a g e , c o n t a c t o f t h e
needles will the throat plate, or
other troubles.
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