JUKI MS-3580 Serie Manual De Instrucciones página 100

(4) Rear looper
Rotate the pulley counterclockwise and align the tip of the front looper 1 with the left surface of the left needle 4 .
1)
Mount the rear looper 3 on the rear looper base !6 and tighten the setscrew !7 .
2)
Loosen the setscrew !8 securing the rear looper base and move the rear looper base !6 in the right-left direction to
3)
align the tip of the rear looper 3 with the left surface of the middle needle 6 .
After adjustment, tighten the setscrew !8 to secure the rear looper base.
4)
1. When the positions of each looper base ( !0 , !3 and !8 ) are adjusted in the right-left direction,
adjust the clearances from the tips of the loopers ( 1 , 2 and 3 ) to the needles ( 4 , 5 , and 6 )
as well.
2. Insuffi cient or excessive looper return may cause stitch skipping, needle breakage, or thread
breakage.
(5) Adjustment of the clearance between the looper and needle
When the tips of each looper ( 1 , 2 and 3 ) are at the center of each needle ( 4 , 5 and 6 ), the standard clearance
is 0.0mm (slight touch).
After adjusting the rear needle guide !9 , make sure again that the clearance between the loopers ( 1 , 2 and 3 ) to
the center of each needle ( 4 , 5 and 6 ) is 0.0 mm respectively, and perform fi nal adjustment of the clearance after
threading.
If clearance adjustment is performed without the rear needle guide !9 , a little strongly touch the tips
of the loopers ( 4 , 5 and 6 ) with the needles ( 1 , 2 and 3 ) , respectively.
Center of needle
4 ・ 5 ・ 6
Looper tip
Clearance of 0.0 mm (slight touch)
Front-rear direction
3
2
1
1 ・ 2 ・ 3
5
6
4
Clearance of
0.0 mm
(slight touch)
!9
Loosen the setscrews ( !2 , !5 and !6 ) securing the
1)
looper bases to adjust the positions of the looper
bases ( !0 , !3 and !8 ) in the front-rear direction.
After adjustments, tighten the setscrews ( !2 , !5 and
2)
!6 ) to secure the looper bases.
1. When the positions of respective looper
bases ( !0 , !3 3 and !8 ) are adjusted in
the right and left directions, adjust the
clearance from the tips of the respective
loopers ( 1 , 2 and 3 ) to the respec-
tive needles ( 4 , 5 and 6 ) as well.
2. When each looper base ( !0 , !3 3 and !8
) is moved leftward, each tip of loopers
( 1 , 2 and 3 ) is detached from each
needle ( 4 , 5 and 6 ).
3. When each looper base ( !0 , !3 3 and !8 )
is moved rightward, each tip of loopers (
1 , 2 and 3 ) touches each needle ( 4
, 5 and 6 ).
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