Maintenance; Adjusting The Height Of The Needle Bar - JUKI LK-1900S Series Instruction Manual

7. MAINTENANCE

7-1. 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.
❷
❶
Bring needle bar ❶ to the lowest position of its stroke. Loosen needle bar connection screw ❷ and adjust so
that upper marker line ❹ engraved on the needle bar aligns with the bottom end of needle bar bushing, lower
❸ .
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 ❹ .
❸
A : Engraved line
for DP x 5
B : Engraved line
for DP x 17
B is for H types only
－ －
51
❹ : Upper
engraved line
❶