JUKI LU-1510 Engineer's Manual page 15

Adjustment Procedures
1. Loosen setscrew ① in the side cover located on the anti-
operator's side, and remove side cover ② .
2. Loosen screw ③ in the presser bar holder to make the state
that the presser lifter lever is lifted.
3. Adjust the lifting amount of the presser foot to 9 ± 0.3 mm. At
this time, the adjustment can be performed with ease if you
insert a thing of 9 mm in thickness in between the top surface
of throat plate and the lower face of presser foot.
4. Tighten the screw in the presser bar holder. Move the presser
foot to the right or left and tighten the screw in the state that
the presser foot does not interfere with the walking foot.
5. Remove the thing inserted in between the top surface of throat
plate and the lower face of presser foot, and attach the side
cover.
1. Remove the knee pad plate and tilt the machine arm.
2. Loosen stopper nut ① and adjust the lifting amount by the
screwing amount of stopper screw ②. Adjust the height from
the top surface of throat plate to the lower face of presser
foot to 16 ± 0.5 mm.
3. Taking care not to move the stopper screw, tighten the stopper
nut.
• Screw in the stopper screw → Lifting amount is decreased.
• Loosen the stopper screw → Lifting amount is increased.
Results of Improper Adjustment
○ When the lifting amount of the
• Presser foot is held rising even
○ When the lifting amount of the
• Presser foot is not sufficiently lifted
○ When the lifting amount of the
• Top end of the needle bar
○ When the lifting amount of the
• Presser foot is not sufficiently lifted
− 12 −
presser foot is large :
when the presser lifter lever is
returned to the home position.
presser foot is small :
a n d w o r k a b i l i t y m a y b e
deteriorated.
presser foot is large :
interferes with the walking foot
when the presser foot is lifted, and
the walking foot may be broken.
presser foot is small :
a n d w o r k a b i l i t y m a y b e
deteriorated.