A method of controlling a greens mower, wherein the greens mower includes a motor drive system variably driving a grass cutting reel and a traction system. The method includes sensing an operating parameter, comparing the operating parameter to a predetermine parameter and outputting a control signal to the motor drive system in response thereto, and further outputting a user signal to a display member representative of the control signal to alert an operator of the operating parameter. The method may also be used to control a fleet of greens mowers using a master controller. In this regard, the master controller may include an administrator or supervisor function preventing an operator from changing any predetermined parameter.