I don't know how many bolts there are probably 8 or 9 they're located at the back of the head in line with you're skid plate linkage. you loosen the jam nut and turn them in to where you want. The book dose a good job of explaining it. You should lock the skid plates up to do it, but wouldn't have to if you turn them all the same amount. Deere also sells a kit that bolts to the top frame off the head where you're feeder house hooks on. It moves the hooking point back like 6in. thus tilting the head even more. Had these on a 920F and the adjustment bolts turned in the whole way on a 9500. Toke the kit off when we got the 9550 side hill knife angle was to great and was picking up every rock in the field. The knife sections tips were 1/2 off the ground, guards were just scooping them up. O than adjust you're wobble box spring too, this is for a flex head i think a ridge is the same except for spring. If you have a book read it it will explain it better.