Power: 73 hp[P] Date of manufacture : 1972 - 1976
Production Manufacturer: Farmall (a part of International Harvester) Total built: 9,367 Original price: $11,875 Farmall 666 Power Drawbar (tested): 58.01 hp 43.3 kW PTO (tested): 69.61 hp 51.9 kW Farmall 666 Engines Mechanical Chassis: 4x2 2WD Steering: hydrostatic power Brakes: dry disc Cab: Open operator station. Two-post ROPS or canpoy optional. Transmissions: 5-speed   hydrostatic   10-speed partial power shift Photos Farmall 666 photos... Tractor hitch Rear Type: II Type: IH Fast Hitch Power Take-off (PTO) Rear PTO: independent Rear RPM: 540 Dimensions & Tires Wheelbase: 103 inches 261 cm Weight: 7053 lbs 3199 kg Front tire: 7.50-16 Rear tire: 15.5-38 Full dimensions and tires ... 666 Serial Numbers Location: Clutch housing, right side 1972: 7500 1973: 8200 1974: 11585 1975: 13131 1976: 15739 how to read serial numbers...

Farmall 544	Power: 57 hp[P]	Date of manufacture : 1968 - 1973

Farmall 560	Power: 66 hp[P]	Date of manufacture : 1958 - 1963

Farmall 564	Power: 60 hp	Date of manufacture : 1972 - 1974

Farmall 656	Power: 70 hp[P]	Date of manufacture : 1965 - 1973

Farmall 666	Power: 73 hp[P]	Date of manufacture : 1972 - 1976

Farmall 706	Power: 89 hp	Date of manufacture : 1963 - 1967

Farmall 756	Power: 85 hp[P]	Date of manufacture : 1967 - 1971

Farmall 766	Power: 88 hp[P]	Date of manufacture : 1971 - 1976

Farmall 806	Power: 110 hp	Date of manufacture : 1963 - 1967