RedMax introduces the ergonomically designed EBZ7100 backpack blower. The 64.9cc Strato-Charged “Green” engine moves up to 812 CFM of air at up to 205 MPH. With fewer moving parts, this engine requires less maintenance than its 4-cycle counterparts. No valve maintenance is required and the engine delivers improved fuel savings. An oversized, 2-stage fresh flow air filter system keeps debris from clogging the engine.