32
4) Adjustment of needle and looper timing
⑴ Left/right position of looper
The clearance between the end tip of the looper and the
center of the right needle changes in accordance with
needle distance, when the needle is at its lowest, and the
looper is at its far right. Be sure to adjust the distance as
shown in the table below.
Adjustment can be done by loosening the screw① of the
looper holder.
※ In all cases, the distance from the center of the needle
bar to the end tip of the looper is 6.0 mm.
[ Figure 45 ]
①
Using the Looper Timing Gauge makes it easy to adjust
the left and right position of the loopers. Timing Gauge
is an optional part. If needed, you may ask for the
purchase to where the product was bought or SunStar
directly.
※ Use Timing Gauge
Timing Gauge is marked with such scales as A, B, C, D and E depending on needle distance. When the looper is in
the most right-end position and the right needle settles on the “V groove”according to needle distance, keep the
Timing Gauge and the loopers in sync, and fasten the “looper holding nut.”
[ Figure 46 ]
Needle
Distance between needles Gauge scales
Distance from the left of the needle bar to the end tip of the looper
3.2mm (32) A 4.4 mm
4.0mm (40) B 4.0 mm
4.8mm (48) C 3.6 mm
5.6mm (56) D 3.2 mm
6.4mm (64) E 2.8 mm
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