Husqvarna has a 0.9HP/25cc 4-Cycle engine the resistance in the starter cord is reduced by up to 40%. No need to mix oil with gas when re-fueling. Ideal for professionals or those with large properties. Smart Start® Quickly starts with barely any effort. Air purge removes air from carb & fuel system for easy starting. Stop switch automatically resets the 'on' position to simplify startups. Steel Tube Drive Shaft & Durable Gear Box. Straight shaft measures 58.4 " long & .9" in diameter. Reduced Emissions & Vibration Control. Runs at 7000 rpm for fast work with less fatigue. Idles at 3100 rpm with a T-35 Bump Trimmer Head. "Tap 'n Go" feeds automatically when pushed into the ground. Dual exit bump feed