Beisler 1220-4 - Manual (Page 41)

Chapter 6: Operation
Page 6-17
6.4 Height adjustment of the contour guiding
The contour guiding achieves an evenly positioning of the trouser part
below the sewing head. Dependant on the thickness of the
manufactured cloth, the height of the contour guiding can be adjusted:
A
Pict. 11 Contour guiding height adjustment
1. Pull the adjusting wheel (A) a little backwards.
2. Set it to one of the four engage,emt position (1 = smallest
height, 4 = biggest height).