Maintenance; Adjusting The Height Of The Needle Bar; Adjusting The Needle-To-Shuttle Relation - JUKI LK-1941 Manual De Instrucciones

&. MAINTENANCE

1. Adjusting the height of the needle bar

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
2
1
Bring needle bar 1 to the lowest position of its stroke. Loosen needle bar connection screw 2 and adjust so
that upper marker line 4 engraved on the needle bar aligns with the bottom end of needle bar bushing,
lower 3.
After the adjustment, make sure that there is no uneven torque.
※ When stitch skipping occurs in accordance with the sewing conditions, adjust the height of the needle
bar so as to lower it by 0.5 to 1 mm from the needle bar engraved line 4.

2. Adjusting the needle-to-shuttle relation

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
1
2
4
38
A : Engraved line for DP x 5
B : Engraved line for DP x 17 #18 to #25
C : Engraved line for DP x 17 #26
2) Remove setscrew 1 and remove inner hook
stopper 2. Further, loosen right and left setscrews
3 and remove oil shield plate 4.
At this time, do not try to forcibly remove the oil
shield plate. Turn the handwheel and remove it at
the position near to the up-stop position of the
3
handwheel.
4
Upper engraved
3
line
A
C
B
1