28
4) Adjust the height of needle bar
A. When the needle① is within the sewing zone, adjust the center of the needle and the end of the looper (left)② to meet
together.
B. Release the screw④ of the needle bar clamp③ and adjust the height of the needle bar.
C. Make adjustment to enable the needle bar clamp③ and the needle bar horizontal link⑤ to maintain their own oil layers
respectively.
5) Adjust the distance between needle and looper
Loosen the looper screw① to adjust the distance between needle and looper at the range of 0.05~0.2mm, and then tighten the
screw① again.
[ Fig. 31 ]
[ Fig. 32 ]
Make the end of the looper (left)② meet the upper edge of the needle hole and lower the needle bar by 2mm.
[ CAUTION ]
Although the looper base turns 360°, the distance between needle and looper should be same.
①
③
④
⑤
①
0.05~0.2mm
②
2mm
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