Setting the lower looper pre-tension
setting
slider
Standard
serging
(STD.)
(_ Lower looper pre-tension setting slider
Standard serging with 3 or 4 threads
STD.
R.H.
<_
I:>
__iiiii_1_
Rolled
hemming
(R.H.)
Rolled hemming with 3 threads
STD.
R.H.
<_
I:>
__ iiiiii !
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