Patent ID: 6053784
Filing Date: 2000-04-25
Classification: B63H,F01P,F02B

Abstract:
A cooling system for an outboard motor having a water propulsion device and an internal combustion engine positioned in a cowling, the engine having an output shaft arranged to drive said water propulsion device, said cooling system including a coolant delivery mechanism driven by said engine for drawing water from a body of water in which said outboard motor is operating and returning the drawn water back to the body of water, said delivery mechanism arranged to deliver coolant through at least one coolant passage in said engine, at least one coolant drain line through which coolant may drain from said coolant passage in said engine, and means for controlling the flow of coolant from said engine through said drain line after said engine is stopped for selectively retaining coolant in said engine and for draining coolant from said engine in response to predetermined conditions.