Sorry I think you misunderstood what I posted early, I try to explain it better, so try this. 10-12 psi in the rear wheels, 15-18 psi in the front wheels. Parked on a level surface. Look at pages 34-35 for leveling procedure. Start by setting the leveling bracket to the lowest setting possible. Check to see that the long arms are set at 5/8". Level deck side to side, then front to back.
https://lookup3.toro.com/classes/doGetPub/?pubid=23508