Hitachi EX 120-2 Excavator. 1997 excavator with 8517 hours on it. The Hitachi EX 120-2 excavator is powered by a 4 cylinder Isuzu turbo charged diesel engine with 81 horse power. The tracks on the machine measure 19 1/2′ wide and the bucket is about a 3/4 yard bucket. the operating weight of the machine is approximately 26’000 pounds.