The new Vortex 9hp Honda blower is 25% more efficient than our classic version. It has a newly designed blower housing, large wheels (the same as our Magnum Series) and still very lightweight and very powerful for a 9hp blower. - 9 hp Honda Engine - Engine is equipped with a low oil guard sensor which will prevent the engine from starting if the oil level is not adequate - Fuel efficient - Extremely light power to weight ratio - Non clogging air intake