－
45
－
7. MAINTENANCE
A
: Engraved line
for DP × 5
B
: Engraved line for
DP × 17
❶
Upper
engraved line
❸
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
.
7-1. Adjusting the height of the needle bar
0.8 to 1 mm
❹
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
❶
❷
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