A disc mulcher can be connectable to a carrier vehicle and can include a frame connectable to the skid steer, a spindle, a disc, and a variable speed motor. The spindle assembly can be connected to the frame. The disc can be connected to spindle assembly and can be rotatable relative to the frame about a central axis of the disc and the spindle assembly. The variable speed motor can be connected to the frame and can be indirectly coupled to the spindle assembly. The variable speed motor can be operable to rotate the disc.

A crop row mower incorporating an “L” member having a column and having a foot, the column having upper and lower ends, and the foot having a distal end; a wheel connected operatively at the distal end of the foot; a first rotary blade mounted at the lower end of the column; a hydraulic motor mounted at the upper end of the column; a first drive shaft extending along the column, the first drive shaft operatively interconnecting the hydraulic motor, and the first rotary blade; and a mounting bracket fixedly attached to the column's upper end, wherein the mounting bracket is adapted for pushing or pulling the “L” member in a proximal direction.

A crop row mower incorporating an “L” member having a column and having a foot, the column having upper and lower ends, and the foot having a distal end; a wheel connected operatively at the distal end of the foot; a first rotary blade mounted at the lower end of the column; a hydraulic motor mounted at the upper end of the column; a first drive shaft extending along the column, the first drive shaft operatively interconnecting the hydraulic motor, and the first rotary blade; and a mounting bracket fixedly attached to the column's upper end, wherein the mounting bracket is adapted for pushing or pulling the “L” member in a proximal direction.

A blade rotation system including an hydraulic gear motor and a spindle shaft. The hydraulic gear motor has a drive shaft, and the drive shaft is configured with one or more first permanent magnets coupled thereto. The spindle shaft is adapted for connection to a blade, and the spindle shaft is configured with one or more second permanent magnets coupled thereto. The one or more first permanent magnets are configured to magnetically engage the one or more second permanent magnets so that rotation of the drive shaft by the hydraulic gear motor translates into rotation of the spindle shaft to impart motion to the blade.

A blade rotation system including an hydraulic gear motor and a spindle shaft. The hydraulic gear motor has a drive shaft, and the drive shaft is configured with one or more first permanent magnets coupled thereto. The spindle shaft is adapted for connection to a blade, and the spindle shaft is configured with one or more second permanent magnets coupled thereto. The one or more first permanent magnets are configured to magnetically engage the one or more second permanent magnets so that rotation of the drive shaft by the hydraulic gear motor translates into rotation of the spindle shaft to impart motion to the blade.

An outdoor unit has a frame that carries a ground grooming or working implement, a traction drive, and a cooling fan, all of which comprises loads on a prime mover. A power management controller automatically reduces an operational speed of the traction drive when prime mover droop is present. The cooling fan cools two cooling fluids. The controller stores data representing variable fan speeds for cooling each cooling fluid in both normal and above normal temperature ranges and for use when prime mover droop is present. The controller uses the highest fan speed required for cooling the cooling fluids in the normal range unless the droop fan speed is lower in which case the lower droop fan speed is used but only to the extent that the lower droop fan speed is not lower than the highest fan speed required for cooling the cooling fluids in the above normal temperature range.

An outdoor unit has a frame that carries a ground grooming or working implement, a traction drive, and a cooling fan, all of which comprises loads on a prime mover. A power management controller automatically reduces an operational speed of the traction drive when prime mover droop is present. The cooling fan cools two cooling fluids. The controller stores data representing variable fan speeds for cooling each cooling fluid in both normal and above normal temperature ranges and for use when prime mover droop is present. The controller uses the highest fan speed required for cooling the cooling fluids in the normal range unless the droop fan speed is lower in which case the lower droop fan speed is used but only to the extent that the lower droop fan speed is not lower than the highest fan speed required for cooling the cooling fluids in the above normal temperature range.

A hydraulic leak detection system includes a leak detection switch responsive to a level of hydraulic fluid in a tank used by a hydraulic mowing circuit and a lift and lower circuit of a grass mowing machine. The system includes a controller that activates a warning indicator if the leak detection switch indicates the level of hydraulic fluid in the tank is low, but allows the hydraulic mowing circuit and the lift and lower circuit to continue operating until the lift and lower circuit reaches a fully raised position. A solenoid valve may control the level of hydraulic fluid in the tank based on temperature of the hydraulic fluid.

A vehicle includes a pump having a swash plate tiltable about a swashplate tilt axis, wherein rotation of the swashplate changes the title angle and effects a change in volumetric displacement of the pump. A controller is operatively coupled to the swashplate to effect rotation of the swashplate, the controller including a processor and memory, and logic stored in the memory and executable by the processor, the logic configured to automatically control at least one vehicle characteristic independent of a user input command.

A sickle knife drive for an agricultural vehicle generally includes a first pump, a first motor, a second motor and a drive manifold having a plurality of connections used for connecting to other devices of the sickle knife drive and/or to devices outside of the sickle knife drive. Operation of the first pump in a forward direction causes the first motor to drive a sickle knife gearbox to cut a crop. During the forward direction, the second motor provides cooling to the fluid circuit. When the first pump direction is reversed, the agricultural vehicle supplements a fluid flow to the fluid circuit to clear any jammed crop from the sickle knives.