How do I level the cutting deck?

On some Murray models there is a flap on the fender below the no.1 position on the deck adjustment handle. Put the mower on a level flat surface. Then lower the deck lever down (the deck level point under the flap)all the way, it should be sitting on the ground. Now on the rear of the deck should be some plastic butterfly nuts, loosen those to allow the hanging adjustment arms to move it should level its self out if the arms are not in a bind or rusted up to bad. Then you tighten the butterfly nuts back up take the deck out of the leveling position, then raise to the height you want then try out the mower to make sure if leveled out out.

I own a 46" deck Murry rider and can't level the deck. The left side front of the deck is extremely low compared to the rest of the deck. I can't figure out how adjust the deck properly, need ideas pls.

On it says to remove level or bolt before adjusting height of deck. Where is this bolt and how to adj