For a Disc Harrow to cut effectively the pans need to be at least 18" in diameter and the spacing between pans should be 9" rather than 7" or 7-1/2".
It is an unusual layout with 6 pans in front and 8 pans in the rear, with no gang angle adjustment possible that I can see.
Folding and unfolding this type of Disc Harrow is potentially hazardous. How are you going to lift 350 - 400 pounds safely?