JUKI LU-2220N-7, Инструкция по эксплуатации

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− 5 −
22. NEEDLE-TO-HOOK RELATION
0.02 - 0.1 mm
3
2
5
1
4
1.4 mm
2.0 mm
) Adjust the standard feed adjusting dial to "0".
2) Loosen hook driving shaft set collar clamping screw
3
, and turn the handwheel counterclockwise to make
the needle bar ascend by 2.0 mm from the lowest position of its stroke.
3) In the state described in 2), align blade point
1
of the hook with the center of needle
2
, and tighten hook
driving shaft set collar clamping screw
3
. At this time, a clearance of .4 mm is provided between the blade
point of the hook and the top end of the needle eyelet. (As reference, the handwheel pointer meets the
marker line of the scale L on the handwheel.)
4) Loosen screw
4
in the top face of the bed and screw
5
in the hook driving shaft saddle, and adjust so
that a clearance of 0.02 to 0. mm is provided between the blade point of hook and the needle by moving
the hook driving shaft saddle to the right or left. Once the specified clearance is obtained, securely tighten
screws
4
and
5
.
5) Set the standard feed adjusting dial to maximum value, and check that the blade point of the hook does not
come in contact with the needle.
The operation panel could come in contact with the thread stand when tilting the machine
head. To protect the relevant parts from contact, shift the thread stand to a position at which
the thread stand does not interfere with the control panel.
23. ADJUSTING THE HOOK NEEDLE GUARD
0.15 - 0.2 mm
1
2
When a hook has been replaced, be sure to check
the position of the hook needle guard.
As the standard position of the hook needle guard,
hook needle guard
2
must push the side face of
needle
1
to lean the needle by 0.5 to 0.2 mm away
from its straight position. If not, adjust the hook
needle guard by bending it.
) If you want to move the hook needle guard
inwards, turn adjusting screw
3
clockwise.
2) If you want to move the hook needle
guard outwards, turn adjusting screw
3
counterclockwise.
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of
the sewing machine.
3
2
blade point