Adjustment
14 - 52
● Bring the machine into the right buttonhole position.
● Engage the stop motion device.
● Bring the needle into the needle bar rise position ( = 2.4 mm after BDC ) of the right
perforation.
● Loosen the now accessible screw 4.
● Move the needle bar 5 in accordance with requirement 1 and tighten screw 4.
● Bring the machine into the left buttonhole seam position.
● Engage the stop motion device.
● Bring the needle into the needle bar rise position ( = 2.4 mm after BDC ) of the right
perforation.
● Adjust the needle guard 3 in accordance with requirement 2.
● Disengage the stop motion device.
14.21.02 Needle bar height and need guard
Requirement
1. At the right perforation on the right buttonhole seam there must be a clearance of
0.5 mm between the top of the needle eye 1 and the hook point 2 at the end of the
needle rise.
2. At the right perforation on the left buttonhole seam the needle must lightly touch the
needle guard 3 in needle bar rise position.
0.5 mm
5
4
1
2
3
Fig. 14 - 50
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