Grass mower

A grass mower comprising:

• a vehicle body frame extending along a centerline of a vehicle body front/rear direction;
• a front wheel unit having a left front wheel and a right front wheel which are mounted to the vehicle body frame;
• a rear wheel unit having a left rear wheel and a right rear wheel which are mounted to the vehicle body frame;
• and
• a mower unit disposed between the front wheel unit and the rear wheel unit downwardly of the vehicle body frame, the mower unit including a rotary blade unit that has at least a left blade and a right blade which are disposed side by side in a vehicle body left/right direction;
• wherein the rotary blade unit is configured such that a tread-on track of the left front wheel as seen in the plane view is overlapped with a rotation locus portion of the left blade from the front side to the rear side thereof and a tread-on track of the right front wheel as seen in the plane view is overlapped with a rotation locus portion of the right blade from the front side to the rear side thereof;
• and
• wherein the left front wheel and the right front wheel have a center position that is equidistant from the left front wheel and the right front wheel the center position being offset from the centerline of the vehicle body front/rear direction;
• and
• a center of a running track of the left front wheel is confined within a width of the left rear wheel and a center of a running track of the right front wheel is confined within a width of the right rear wheel.