Jet- propulsion watercraft

摘要

The present invention provides a lightweight and simply-configured watercraft of a jet-propulsion type that can maintain steering capability according to the cruising speed of the watercraft even while throttle-close operation is performed and the amount of water ejected from a water jet pump is thereby reduced. The engine speed is increased by mechanically connecting a rotational shaft of a steering handle and a throttle lever by means of a push-pull cable and moving the throttle lever to cause a throttle valve to be opened according to the steering amount of the handle. Alternatively, the engine speed is increased by increasing a fuel of an auxiliary air-fuel mixture supplying system provided independently of the main air-fuel mixture supplying system while a throttle-close operation and a steering handle operation are detected. The auxiliary air-fuel mixture supplying system is provided in a position of an air supplying passage to the main air-fuel mixture supplying system and an air-fuel mixture supplying passage of the main air-fuel mixture supplying system directly or indirectly through a predetermined connecting passage.