Swisher Shindaiwa E4-S4000 E4 34-CC 4-Stroke Engine Commercial Grade String Trimmer 34-CC E4 hybrid engine produces 1.4-Horsepower and gives the power and torque of a 4-stroke engine while having the light weight and all position operation of a 2-stroke Fuels like a 2-stroke, using a 50:1 mix, but remains up to 25-Percent more fuel efficient than similar displacement 2-stroke engines. 23.7 Fuel ounce fuel tank Patented power boost chamber supercharges the engine to give it even more power and torque. 2 Ring piston and cylinder is chrome plated for durability and longevity Handle mounted start/run/stop and throttle controls put all functions at your fingertips Non-CARB Compliant/Not For Sale In California