You need to get the machine on a flat surface, get the blades pointing toward front and back, measure the distance from the floor to the tip of the blades at the from and at the rear, the rear should be approx 1/2" higher than the front but should be the same from left to right, adjust the deck rods to get this, once level from left to right it has to cut level, should have said check all tyre pressures before measuring. It will make things easier if you make some small blocks as your measure
Husqvarna man
June 2010