The world's first chainsaw with electronically controlled fuel injection is here. With the MS 500i, STIHL ushers in a new era in chainsaw technology. The revolutionary STIHL Injection technology stands for rapid acceleration, extremely high power, and consistently minimized weight. The chain accelerates from 0 km/h to 100 km/h in an astonishing 0.25 seconds. The power-to-weight ratio of the STIHL MS 500i is unique in the market at 1.24 kg/kW. The innovative engine with pressure and temperature sensors optimally doses the fuel, whether during cold or warm starts and regardless of altitude or ambient temperature. The elimination of a start position and the easily accessible purger ensure the simplest starting under all operating conditions.