Murray rider cuts horribly uneven
I know that Murray's are junk mowers. However, I was helping out a friend by buying it and I paid half price and it was only used one time. It is a 42" cut 12.5 horse.
I have never seen a mower cut worse. It scalps the lawn on one side and cuts 3" on the other. It can't go over any bumps or changes in the ground without scalping it. My lawn isn't perfectly flat but it isn't very bad either.
The only thing I can figure is that it might help to put rollers on the mower deck. It doesn't have any and I was wondering if that would help.
I've already done the leveling as is instructed in the manual. Any other suggestions?
Please help me fix this piece of ****.