Adjusting The Stitch Length - SunStar SPS/E-BH6100-00 User Manual

B. Make sure that the looper base and the needle bar block④ are in parallel.
- Turn off the power and use the setting pin② to align the looper base with the bed hole.
- Open the side cover on the left side of the arm and loosen the tightening screw for the needle bar rotary pulley through
the arm hole.
- When the tightening screw⑤ for the needle bar rotary pulley is loosened, align the looper base with the needle bar
block. When adjustment is complete, fasten the tightening screw⑤.

14) Adjusting the stitch length

A. Disassemble the upper thread holder and the side cover.
B. Loosen the zigzag connecting lot hinge screw① and assemble the zigzag connecting lots② at positions A or B.
- A: Zigzag length is 2.1mm
- B: Zigzag length is 3.4mm
34
④
looper base
2.1, 3.4mm
⑤
②
①
A
B
[ Fig. 44 ]
[ Fig. 45 ]