S100
1-43
Revised 10/2005
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D - MACHINE ADJUSTMENT
1 7 . A D J U S T M E N T O F T H E L O O P E R S T O T H E N E E D L E
After setting of the loopers is necessary to adjust center puncture to the buttonhole axis. Differently adjust
the needle bar by the machines S-100.052/053, see MACHINE ADJUSTMENT ROUND BUTTON-
HOLE - Differently position of the machine mechanisms S -100 - 052/053. The standard clearance be-
tween the loopers and needle is 0.05 to 0.1 mm, (0.002 to 0.004").
1.
Manually rotate the right hand wheel and ensure the distance between the needle and each looper, as
the needle passes the loopers at the closest point, are equal. Is suitable to check it on the both sides
of the buttonhole.
2.
It is possible to adjust the clearance after loosing the screw
and turning the loopers forward or
backwards to obtain the proper clearance. Then tighten the screw .
The recommended clearance between the face of the needle and back of needle guard is between 0.05
to 0.1 mm, (0.002 to 0.004"). To adjust, bend the needle guard in or out as necessary in order to obtain the
proper clearance.
Needle Face
Right hand looper
Needle
0.05 to 0.1 mm
0.002 to 0.004"
Left hand looper