Specifications to look for when buying an Allis Chalmers tractor include the horsepower, type of engine, type of transmission, two or four-wheel drive and Power Take-Off power. The tractor's hydraulic capacity is another important consideration. These specifications vary depending of the type of operation required of the tractor.
How much power is required depends on the load of work. Tasks such as mowing require lower horsepower of about 35hp or less. Heavy farm work such as making hay and towing an additional piece of equipment require more horsepower of up to 55hp.
A small 4WD tractor can give useful power without compromising on maneuverability. This type of tractor works well on small-sized farms and they have greater stability on steep and rough terrain.