| The BS 500-oi, BS 600-oi and BS 700-oi Series of oil-injected rammers eliminate premixing gas and oil. A low-oil shutdown switch prevents engine damage. A 2-cycle Wacker WM 80 engine powers the rammers, which also feature a 120:1 fuel/oil ratio. The units run up to 65 hours on a single tank of oil. | 
