Patent ID: 7496441

Claim:
A power machine control system for a power machine having an engine, an ignition, a traction system coupled to the engine to move the power machine, a plurality of hydraulic actuators, and a hydraulic power system providing hydraulic fluid under pressure, the control system comprising: a user input device providing a user input signal indicative of a series of letters or numbers input; a controller coupled to the user input device and having associated memory storing at least three levels of passwords, the controller being configured to control different functions of the power machine based on a level of password input, wherein the controller is configured to accept and implement requested modifications of a normal operation of the power machine if a password having a sufficient predetermined level is input; and a speed select input coupled to the controller providing a speed select input signal indicative of a user input request to select one of a plurality of operating speeds and wherein the controller is configured such that modification of normal operation comprises changing enablement status of the speed select input.