A. Model: New, or current production model, in general design, performance, and operation, and meeting the following specifications here. B. Operational Requirement: The riding mower as specified herein will operate several hours a day, Monday to Friday, under conditions that may include hilly, uneven terrain, thick bladed grass and wet grounds. In addition to all other requirements herein, the apparent successful offeror may be required to demonstrate the ability of the rotary riding mower offered to perform under similar conditions. C. Drive: 4-wheel drive, 4-wheel drive track stance prime move, rear wheels must be shaft driven with outfront rotary deck. D. Engine: 24 horsepower at engine rated rpm, 68.6 cubic inch displacement, three (3) or more cylinders, four (4) cycles, diesel fuel, liquid cooled, with heavy-duty or industrial air cleaner, spark arrestor muffler, and pressurized lubrication. E. Radiator: Heavy duty or industrial type radiator.