Abstract: A zero turning radius mower park brake system includes a pair of steering levers attached to steering arm brackets that are pivotable forward and reverse on a first axis for rotating a pair of traction drive wheels in forward or reverse, and pivotable outwardly on a second axis while in a neutral position. A wire cable connects each steering arm bracket to a park brake. The wire cable retracts sufficiently to actuate the park brake when the steering arm bracket is pivoted outwardly on the second axis, but does not actuate the park brake when the steering arm bracket it pivoted forward or reverse. At least one spring provides a force urging the park brake into engagement when the steering arm pawls to park brake engaged position.

Abstract: A mower deck automatic leveling system includes actuators that adjust the position of the mower deck at a plurality of different locations between the mower deck and vehicle frame at the selected cutting height, and sensors that calibrate the actuators by measuring the distance to a ground surface at a plurality of different locations on a mower deck at the selected cutting height.

Abstract: A mower deck automatic leveling system includes actuators that adjust the position of the mower deck at a plurality of different locations between the mower deck and vehicle frame at the selected cutting height, and sensors that calibrate the actuators by measuring the distance to a ground surface at a plurality of different locations on a mower deck at the selected cutting height.

Abstract: A mower deck hillside adjustment system includes an angle sensor such as an inertial measurement unit mounted to the mower deck for measuring the angle of the mower deck on the roll axis. The angle from the sensor is used to command a left actuator and a right actuator to raise or lower the left side or right side of the mower deck respectively so each side of the mower deck is at the same height to compensate for tire squat and eliminate step cuts.

Abstract: A mower deck discharge chute includes a flexible member attached with a hinge to a multi-blade mower deck, and a drive belt tunnel through the flexible member that an attachment drive belt passes through when the flexible member is pivoted up to a generally vertical position. The attachment drive belt may be on a single plane to engage a drive sheave on the multi-blade mower deck, a driven sheave on the belt driven attachment, and an idler.

Abstract: A mower deck discharge chute includes a flexible member attached with a hinge to a multi-blade mower deck, and a drive belt tunnel through the flexible member that an attachment drive belt passes through when the flexible member is pivoted up to a generally vertical position. The attachment drive belt may be on a single plane to engage a drive sheave on the multi-blade mower deck, a driven sheave on the belt driven attachment, and an idler.