If you close the kitchen front, you can adjust the height and width.
Slide the white bushing, the washer and the lock nut over the axis of the pivot point. Do this on the left- and right-hand side.
You can now adjust the height using an Allen key.
The width can be aligned by turning the lock nut. By tightening the nut, you push the front to the side, as it were. Make sure that the nuts on both the left- and right-hand side line up with the hinge point. This ensures that the alignment remains good and you do not get slack in the system. Of course, do not tighten it too much.
When the height is properly adjusted (using the Allen key), you can lock it in place by fully tightening the small screw.