Sound attenuator and temperature control device for an outboard motor

1. Field of the Invention A water reservoir is provided for use in conjunction with the engine of a marine propulsion system. The water reservoir is shaped to comprise two or more water containment cavities that can be located in positions which absorb heat from various heat producing components of the engine and, in addition, serve as sound barriers to attenuate noise emanating from the engine. The water reservoir is connected in fluid communication with the water pump of the marine propulsion system and in fluid communication with a cooling system of the engine.