SunStar SC 7200A Series User Manual page 24

⑵ Change of stitch length
①
Press lightly stitch length-adjusting button① with your left hand so that the end comes in contact with inner parts.
With the button① pushed in, turn the upper shaft pulley② with your right hand so that the button① goes in deeper.
At this point, rotate the upper shaft pulley with the button① strongly pushed in.
Stitch length is a value you get when the mark around the upper pulley meets the mark ③.
(Caution)
When using sewing machines mounted with pneumatic trimming devices designed to automatically find the needle
location, e.g., UT-A, UT-B or ST-C, be sure to turn off the power before stitch width conversion.
24
[ Figure 31 ]
②
③
[ Figure 32 ]