Chain saw Winner built premium 2-cycle engine 2) high-torque engine 3) 1-piece electronic ignition 4) externally-adjustable, boot-mounted walbro wt carb 5) oregon or carlton saw chain. They all meet the ansi low-kickback requirement 6) 4-bolt muffler 7) fully adjustable, automatic chain oiling pump 8) aluminum alloy front handle bar 9) chain brake 10) chain catcher 11) hand guard 12) 3-shoe centrifugal clutch 13) 7-point anti-vibration system 14) rim-type sprocket 15) 2-ring piston design 16) high-impact glass filled nylon rear handle and recoil housing 17) easy access air filter 18) chrome-plated cylinder 19) magnesium alloy case Specifications: 1) displacement: 45cm3/2.7cu.Inch 2) maximum power: 2.0kw/2.8hp 3) rpm at maximum power: 7, 500rpm 4) operating range: 6, 000-10, 000rpm 5) vibrations, front/rear handle, 4.8m/s2/ 6.5m/s2 6) bar lengths: 20inch Dry weight, less attachment: 4.6kg