Patent ID: 7647143

Claim:
A speed control device for a water jet propulsion boat that includes a power output request device and an engine adapted to operate in response to an operation of the power output request device by a rider, the speed control device comprising a speed setting operator configured to be operated by the rider, a speed setting operation detecting device configured to detect an operational condition of said speed setting operator, a speed mode changing device configured to change a speed mode based upon a detection result of said speed setting operation detecting device between a regular mode in which the engine operates in response to an operation of said drive operator by the rider and a speed set mode in which said water jet propulsion boat runs at a preset running speed or at a preset engine rotational speed, an engine rotational speed detecting device configured to detect a rotational speed of the engine, and a speed mode returning device configured to return the speed mode from the speed set mode to the regular mode when a detection value detected by said engine rotational speed detecting device in the speed set mode is zero or less than a predetermined value.