If any are present, try to determine if they are major or minor. Dust accumulations over old grease spots generally are not indicative of a major problem. Fresh grease spots, particularly larger ones, and grease spots on the floor under the tractor justify detailed investigation. Engine block and cylinder bead. Examine the engine block and cylinder head for external cracks or freezing damage.
Major damage is difficult to repair, and can mean future trouble.
There is also the possibility that internal damage may have occurred. Examine the cooling system for evidence of leakage or overheating. Also, look for evidence of repair to the radiator core. Metal surfaces will usually show signs of stains caused by coolant leakage. Look for evidence of engine overheating, such as stains around the radiator fill cap or overflow tube.