SINGER 5554 Heavy Duty Combo - Manual (Page 72)

Converting the upper looper into spreader
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2-thread wrapped edge overlock
2-thread standard rolled hem stitching 1)
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a. 2-thread wrapped edge overlock
b. 2-thread standard rolled hem stitching
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a. 3-thread standard rolled hem stitching
b. 3-thread upper looper thread wrapped