Adjustment
14 - 59
1
2
Fig. 14 - 57
4
S20
3
● Bring the machine into the right buttonhole seam position.
● Engage the stop motion device.
● Turn the handwheel until switch S20 just on.
● Loosen screws 3 and move the switch blade 4 in accordance with requirement 1.
● Tighten screws 3.
● Turn the drive pulley in its direction of rotation until the first final bartack stitch while
counting the stitches.
● Loosen screws 1 and move the reduction lug 2 in accordance with requirement 2.
● Tighten screws 1.
● Disengage the stop motion device.
14.27 Reducing speed
Requirement
1. With the sensing lever touching the reduction lug 2 the switch S20 must be pressed
securely.
2. The speed must be reduced approx. five stitches before the triggering of the knife
movement.
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