The 446 has a two-cylinder engine manufactured by Onan. Fueled by gasoline and cooled by air, it can reach 16 horsepower and run at 3,600 revolutions per minute. The cylindrical bore measures at 3.25 inches, while the piston stroke length is 2.62 inches. Total engine displacement is 43.7 cubic inches.
This tractor has a two-speed transaxle. The 1983 model includes a retard feature for the slower speed. However the speeds can be modified in the 1983 version with the addition of hold back valves to prevent downhill coasting.
The 1983 446 has a three-point hitch, accommodating different attachments. These include rototillers, snow augers and power rakes.