Swisher Shindaiwa E4 34cc 4-Stroke Engine Commercial Grade Water Pump E4-W4000 34cc E4 Hybrid Engine produces 1.4 HP 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% more fuel efficient than similar displacement 2-stroke engines. 20 fl oz 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. 34.3 GPM, 164 ft total head lift, 26 ft suction lift, and 72 psi max. pressure, 1in. Intake and Output Non-CARB Compliant/Not For Sale In California