outboard motor yamaha 9.9 Options
At minimal RPM, Yamaha’s labyrinth exhaust method minimizes the engine sounds. F9.9 contains a water-sealed outer wall within the exhaust muffler. It helps lessen the exhaust noise degrees for the tranquil Procedure. This enhances cooling which in return guards the exhaust system from corrosion. two-stroke outboards use a mixture of gasoline a