OIL-INJECTED RAMMERS Uses A Two-Cycle Engine New oil-injected rammer series feature a patented oil-injection system. The system is available on the BS 500, BS 600 and BS 700 series, which range in weight from 115 to 159 lb and offer 2,695 to 3,375 lb per blow. They are powered by the maker's exclusive WM 80 engine, the only two-cycle engine in the industry designed especially to withstand tough rammer applications. The oil-injection system is designed directly into the WM 80 and eliminates the need for premixing gas and oil. WACKER; 262/257-4131; email:julie.shuster@am.wackergroup.com