Product Highlights Built in the USAA majority of STIHL gasoline-powered units sold in the United States are built in the United States from domestic and foreign parts and components. More Information Master Control Lever™The Master Control Lever™ is an easy to use single lever, operating the choke, starting throttle lock and on-off switch. The operator must pull the throttle trigger before moving the Master Control Lever™ to the choke position. Standard Features Common Features for ChainsawsView the features common to many STIHL chainsaws. MS 251 WOOD BOSS® Specifications POWER SOURCE Gas POWERHEAD WEIGHT 10.8 lbs. GUIDE BAR LENGTH (Recommended) 18 in. OILOMATIC® CHAIN .325" RM3 CHAIN OIL CAPACITY 6.7 oz. ENGINE POWER 3.0 bhp FUEL CAPACITY 13.2 oz. DISPLACEMENT 2.78 cu.in.