Utility machine operable in stand-on and walk-behind modes

A lawn mower comprising:

• a mower assembly including:
• a mower frame;
• a prime mover supported by the mower frame;
• a mower deck assembly supported by the mower frame and operable to cut grass under the mower deck under the influence of the prime mover;
• a tractive element supporting the mower frame with respect to a ground surface, the tractive element being operable under the influence of the prime mover to move the lawn mower over the ground surface;
• a mower support wheel supporting the mower frame with respect to the ground surface and passively rolling over the ground surface in response to movement of the mower assembly, the tractive element and mower support wheel together supporting the mower assembly in an operative condition for cutting grass;
• and
• a trailer assembly including:
• an operator platform in a deployed condition for supporting a standing operator for operation of the lawn mower in a standing mode;
• a platform support wheel supporting the operator platform with respect to the ground surface, the platform support wheel rolling over the ground surface in response to movement of the mower assembly;
• a platform connector interconnecting the operator platform with the mower frame such that the operator platform is towed behind the mower assembly;
• an operator interface including a hand control adapted to be manipulated by the operator's hand to control at least one operational aspect of the prime mover, the mower deck assembly, or the tractive element;
• an interface support assembly interconnecting the operator interface with the platform connector, the interface support assembly being pivotable between a first position in which the hand control is accessible by the operator in the standing mode and a second position in which the hand control is positioned rearward of the operator platform and accessible by the operator in a walking mode in which the operator walks behind the operator platform with the operator platform in the deployed condition.

A lawn mower comprising:

• a frame having a first portion and a second portion;
• a prime mover supported by the frame and including an output shaft;
• a tractive element supporting the first portion of the frame and operable under the influence of the prime mover to move the lawn mower over the ground surface;
• a support wheel supporting the second portion of the frame and passively rolling over the ground in response to movement of the lawn mower;
• a deck supported by the frame;
• a spindle supported for rotation with respect to the deck and coupled to the output shaft of the prime mover for rotation in response to rotation of the output shaft;
• a blade coupled to the spindle for rotation with the spindle to cut grass under the deck, the blade rotating in a cutting plane;
• a height-of-cut adjustment mechanism enabling adjustment of a height of the first portion or second portion of the frame with respect to the ground;
• and
• a cutting plane adjustment mechanism to adjust the cutting plane with respect to the frame to make the cutting plane substantially parallel to the ground.