JUKI LU-1510N-7 Engineer's Manual page 23

Adjustment Procedures
3) Automatic presser foot lifter (Machine with thread trimmer only)
1. Loosen cylinder nut
connecting screw
throat plate to the bottom surface of the presser foot becomes 16±0.5
mm.
o Turn in the direction
o Turn in the direction
After the adjustment, check that there is a clearance of 0.5 to 1.5
mm between automatic presser foot lifter lever A
sion release plate
Adjustment Procedures
1. Set the stitch dial to "0".
2. Remove timing belt
3. Turn the handwheel to bring the needle bar to the lowest dead point
of its stroke.
4. Turn screw No. 2
machine bed.
5. Fit timing belt to lower sprocket
(Caution) The illustration is as observed from the handwheel side.
and adjust the screwing amount of cylinder
so that the height from the top surface of the
→ Lifting amount is increased.
A
→ Lifting amount is decreased.
B
when the presser foot is lowered.
.
so that it is parallel to top surface
.
Results of Improper Adjustment
When the lifting amount is higher than
the specified value :
o The top end of the needle bar in-
When the lifting amount is lower than
the specified value :
o The presser foot is not sufficiently
and thread ten-
Results of Improper Adjustment
o Stitches will be poorly tensed.
o Feed timing and needle to hook
of the
– 19 –
terferes with the walking foot and
the walking foot may be damaged
when the presser foot is raised.
raised and the working property
may be deteriorated.
timing will vary.