Kenmore 385.16644 El Manual Del Propietario página 65

Setting the lower looper pre-tension setting
slider and changeable thread guide
Standard serging (STD.)
Standard serging with 2, 3 or 4 threads
(_) Lower looper pre-tension setting slider
Rolled hemming (R.H.)
Rolled hemming with 3 threads
3/4 thread serging
Serging with 3 or 4 threads
_ Changeable thread guide
2 thread serging
Serging with 2 threads
Change the setting depending on whether you're doing 3/
4 thread serging or 2 thread serging.
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3./4
3/4
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