Why doesnt the left front wheel of my new toro push mower touch ground

Used my new Toro persnal pace mower for the first time today. The left front wheel no longer touches the ground. Wheel heights are all the same but its as though the deck isnt level? Did not notice this until I finished and cleaned it. It wasnt like that while I was mowing. It cut evenly and great. I didnt hit anything. Help please