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ANGULAR POSITION OF UPPER LOOPER
1. Remove: Mains lead - Machine base.
2. Make sure that there is no axial play neither on the upper looper shaft "a" nor on the 2
pivoting axles "b" and "c".
3. Bring upper looper to its extreme left swing position.
4. Loosen screw "d" just enough so that lever "e" articulates with friction and adjust lever
"e" angularly to obtain a 6.0mm gap between point of looper and the left side of the
overlock needle.
5. Tighten screw "d". It is very important that the machine turns quite freely without any
biding effect caused by an axial shifting from lever "e".
6. Check clearance and timing of upper looper to lower looper.
R1
5.5~6 mm
c
b
e
d
3mm
10
a
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