JUKI MH-481 Betriebsanleitung Seite 25

(Determining the looper position)
3. Loosen gear setscrew 5 to adjust so that looper 4 reaches its back end when the needle bar is at the lower
point of its stroke.
4. Carry out adjustment so that the blade point of looper 4 aligns with the center of the needle, so that the former
is spaced 1.5 mm from the upper end of needle eyelet and so that a clearance of 0.05 mm is provided between
the looper and the needle when second marker line B on needle bar 2 is aligned with the bottom end of
needle bar lower bushing 3 .
Needle
Approx. 3.2 mm
6
7
5
– 15 –
B
5. Loosen looper setscrew 6 and looper clamping
screw 7 and carry out the adjustment.
6. Check to be sure that a distance of approximately
3.2 mm is provided between the center of the needle
and the blade point of the looper when the looper
reaches its back end.
4
Needle