Yard-Man Trimmer - 26cc 4-Cycle Engine, 17in. Cutting Width, Model# YM4570 Large four-bolt commercial handle minimizes vibrations and allows left- and right-handed use Extended-reach boom allows access to hard-to-reach areas High-torque 4-cycle engine runs on gas; no need to mix with oil Engine is easy to start, thanks to the two-step prime and pull system EZ start spring-assisted recoil reduces effort needed to start