Needle Thread Feeding Device; Position Of The Wiper - JUKI LZ-2280A Series Instruction Manual

4-14. Needle thread feeding device

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
❶
❶
❷
❷
❺

4-15. Position of the wiper

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
❶
❷
❸
❹
❸
❺
❹
❻
(1) Position of the feeding wire
Adjust the installing position of the feeding wire ❶ so
that a distance of 8 to 10 mm is provided between the
guide portion ❷ of the thread guide and the top end
of the wire. Then, tighten the two screws ❸.
At this time, adjust the longitudinal po-
sition of thread draw-out wire ❶ so that
thread draw-out wire is brought to the ap-
proximate center of thread take-up thread
guide ❷.
(2) Adjusting the stroke of the feeding wire
1) Increase the feeding amount of the needle thread
if the needle thread fails to interlace with the
bobbin thread or is likely to slip out of the needle
eyelet at the start of sewing.
Loosen two setscrews ❹. Shift thread draw-out
2)
wire ❶ in the direction of the arrow.
If the feeding amount of the needle thread is
excessive, the thread will be likely to break.
(3) When turning OFF the feeding device
If it is not necessary to operate thread draw-out wire
❶, turn off draw-out switch ❺ on the rear face of the
sewing machine.
Align the marker dot ❶ engraved on the pulley
1)
cover with the white marker dot ❷ engraved on
the handwheel (the 3rd white marker dot in terms
of the direction of rotation of the sewing machine).
Move the rod ❸ in the direction of the arrow, and
2)
adjust the clamping screw ❺ so that an approxi-
mate 2 mm clearance is provided between the
top end of the needle and the wiper ❹.
3) For the sewing machine provided with a wiper,
turn off wiper seesaw switch ❻ in the case the
wiper is not necessary to be used.
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