The new BTS 630 and BTS 635S saws from Wacker Neuson feature a new air filter concept designed to extend service life and result in significantly less down time. A high-torque, 5.8-hp engine is designed to ensure improved cutting performance and produce less vibration. The three-stage air filter system includes a cyclonic filter, a foam pre-filter and a paper filter, resulting in minimum downtime, reduced maintenance and reduced lifecycle costs, the maker says. The BTS 630 weighs 24 pounds and has a 12-inch blade diameter with .08-inch arbor. The BTS 635S weighs 24.9 pounds. www.wackerneuson.com/