The Finger Plate is adjusted in and out of the machine by locking the Finger Plate Clamp 1482 with screw 1353-16.
To determine the best position of the Plate, find where the Hook just misses the edge of the Plate on its return stroke into the machine. This is a good starting point.
The Plate should hold the stitches being formed, and help draw the loop down the Shank of the Hook. But, the Hook should not contact the Plate.