Power: 48 hp Date of manufacture : 1930 - 1937
Production Manufacturer: Hart-Parr (a part of Oliver) Type: Standard-tread tractor Factory: Charles City, Iowa, USA Hart-Parr 28-44 Power Drawbar (claimed): 22 hp 16.4 kW Belt (claimed): 44 hp 32.8 kW Plows: 3-5 Drawbar (tested): 34.21 hp 25.5 kW Belt (tested): 49.04 hp 36.6 kW Hart-Parr 28-44 Engine Mechanical Chassis: 4x2 2WD Steering: manual Cab: Open operator station. Transmission: 3-speed gear Photos Hart-Parr 28-44 photos... Dimensions & Tires Weight: 6,415 lbs 2909 kg Full dimensions and tires ... 28-44 Serial Numbers 1930: 500001 1931: 503599 1932: 506185 1933: 506212 1934: 506255 1935: 506401 1936: 507176 1937: 508016 Final: 508917 how to read serial numbers...

Hart-Parr 18-36	Power: 40 hp	Date of manufacture : 1926 - 1930

Hart-Parr 20-40	Power: 44 hp	Date of manufacture : 1912 - 1914

Hart-Parr 22-45	Power: 50 hp	Date of manufacture : 1903 - 1911

Hart-Parr 28-50	Power: 55 hp	Date of manufacture : 1927 - 1930

Hart-Parr 28-44	Power: 48 hp	Date of manufacture : 1930 - 1937

Hart-Parr 40-80	Power: 110 hp	Date of manufacture : 1908 - 1909

Hart-Parr 60-100	Power: 111 hp	Date of manufacture : 1911 - 1912

Hart-Parr Crop Maker 17-27	Power: 30 hp	Date of manufacture : 1916 - 1917

Hart-Parr Little Devil 25-22	Power: 24 hp	Date of manufacture : 1914 - 1916