Wacker BS 50-4s

Wacker's BS 50-4s and BS 60-4s are the first four-cycle rammers to offer a low-oil shutoff. Wacker's 4-cycle WM 90 engine generates 2.8 horsepower. The BS 50-4s weighs 137 pounds and hits with 2,645 pounds per blow at a rate of 680 blows per minute. The BS 60-4s weighs 154 pounds, hits with 2,975 pounds per blow at a rate of 680 blows per minute.