Oliver 660

The Oliver 660 is a row-crop tractor produced by Oliver from 1959 to 1964. It features a Waukesha-Oliver 2.5L 4-cylinder engine available in gasoline or diesel versions, with claimed PTO power of 41 hp. The tractor has a 6-speed unsynchronized transmission with 2 reverse gears and a 235mm dry disc clutch. It is a two-wheel drive tractor with an open operator station. The 660 has a fuel capacity of 13 gallons and a hydraulic system capacity of 9.5 gallons with an 8 gpm pump flow. The rear PTO is independent and runs at 540 RPM. Dimensions include a 92-inch wheelbase, 134.4-inch length, 80.9-inch width, and 87.4-inch height. Shipping weight ranges from 3128 to 3178 pounds depending on the fuel type. Tire options include front sizes 5.00-16 and 6.00-16, and rear sizes 9-38, 10-38, and 12.4-38. The serial number is located at the bottom of the dashboard below the steering wheel.