The Cobra 390B petrol scarifier is powered by a Briggs & Stratton 550 Series engine and has a full 15" working width. The S390B comes with 16 fixed blades for the most complete scarifying experience. Every Cobra scarifier has been expertly designed in the U.K to cater specifically for the changing conditions of the British lawn. B&S 550 Series Engine   Briggs & Stratton general purpose horizontal shaft engines are built to be tough, reliable and efficient. Feature for feature, they offer you the best value available. Briggs and Stratton engines are perfect for powering Cobra petrol scarifiers.   Ergonomically positioned operator controls The Cobra S390B has been designed to make scarifying your lawn a simple and effortless task. The ergonomically positioned controls not only make operator use more comfortable, but more importantly, make using Cobra scarifiers as safe as possible. Cobra petrol scarifiers are packed with innovative features to help you maintain your garden with minimum time and effort.