The cut off machine's STIHL Injection system does away with need for a choke and a starting throttle position. Thanks to automatic cold/hot detection, only one starting position is needed. The controller's intelligent system uses data like external temperature, altitude and fuel grade to automatically calculate the quantity of fuel needed when starting. That makes starting easier than ever: Simply move the switch from 0 to I, purge, start the engine and open the throttle. No chance of operator error!