Power mower with stand-on and sit-down modes

A zero radius turning self-propelled lawn mower comprising:

• an engine for powering the mower;
• first and second rear drive wheels each independently driveable in forward and reverse directions so as to allow for approximate zero radius turning of the mower about a vertical turning axis disposed between said rear drive wheels when said first rear drive wheel is driven forward and said second rear drive wheel is driven rearward at approximately the same speed;
• a foot platform for supporting a standing operator, wherein at least a portion of said foot platform is located forward of a rear edge of one of said rear drive wheels;
• a seat structure for supporting a sitting operator, wherein at least a portion of said seat is located rearward of said vertical turning axis;
• wherein said seat structure is pivotal about a first pivot axis so that said seat structure may be folded up from a deployed position to a stowed position;
• and
• wherein the operator may operate the mower when in a sitting position on said seat structure and when in a standing position on said foot platform.