Abstract: A marine flushing apparatus for an inboard motor, generator set or air conditioning unit of an aquatic vessel, the apparatus including a fresh water holding tank with a level indicator on board the vessel, at least one flushing pump for each motor or generator set, a solenoid valve located between the at least one flushing pump and the motor or generator set and a raw water feed and the fresh water holding tank and a controller to check at actuation, the level of fresh water in the fresh water holding tank and to abort startup of a flushing sequence if the level is insufficient and to actuate a flushing sequence if the level is sufficient wherein, if the level is sufficient, the controller insures that the solenoid valve these energized after actuation of the at least one flushing pump to ensure that the raw water feed is replaced by fresh water from the fresh water holding tank without substantial interruption.

Abstract: A system and apparatus for use in flushing at least a portion of a motor with a cleansing fluid. A water inlet apparatus (10) and inlet (20) for flushing a boat motor with fresh water is provided and a system incorporating the apparatus (10) (and inlet 20) is also provided. In particular, the system and apparatus are used to flush a boat motor with fresh water after use. The apparatus has one or more inlets adapted to receive a fresh water source (e.g. a hose) and a valve, such as a diaphragm valve, that selectively allows flow of the fresh water into the motor instead of its usual water source (e.g. salt water). Preferably the valve is automatic and is actuated under pressure of the incoming fresh water. The inlet(s) are secured in a surface of the boat inside a basin, which may have a cover (optional) to protect the inlet(s) from the weather/elements.