Mercury - Quicksilver Engine Starter Gear Reduction Series Marine Grade 8M6007406. Overview. There's a certain comfort that comes from knowing your engine will answer the moment you turn the key. No hesitation, no question marks-just a confident, steady crank that tells you your day on the water is off to the right start. That's the kind of reliability the Quicksilver 8M6007406 starter brings to Volvo-Penta engines. Whether you're easing away from the dock at sunrise or firing up after a quiet a