Specifications WEIGHT 15.2 lbs. POWER SOURCE Gas CUTTING WIDTH 16.5 in. ENGINE POWER 2.7 bhp FUEL CAPACITY 25.4 oz. DISPLACEMENT 41.6 cc Features Powerful Low Exhaust Emission Engine STIHL ElastoStart™ TapAction™ AUTOCUT® Cutting Head IntelliCarb™ Compensating Carburetor Equipped with a simplified starting procedure, the FS 251 is a heavy-duty trimmer built for pros with no time to waste. Designed with a powerful low exhaust emission engine, the FS 251 saves on fuel and operating costs without losing any of the power. The FS 251’s easy-to-adjust bike handles provide comfort and ease while tackling widespread, overgrown areas. With a rugged design that offers optimal maneuverability and a vertically-pleated paper air filter that provides an extended service life, you can get to work quicker and count on the gas trimmer to last longer.