COUPLER MOUNTING STRUCTURE FOR WATERCRAFT

摘要

To provide a coupler mounting structure for a watercraft which can improve the durability of a mounting portion of a shaft for mounting a driven coupler and can facilitate the maintenance for the shaft. An intermediate portion of a shaft 22 for driving an impeller in a watercraft i s supported through a bearing member 50 to a body 11, and a driven coupler 23b to be connected to a drive coupler 23a mounted on an output shaft 21 of an engine 20 is mounted on a front end portion 22a of the shaft 22. A collar 26 having a diameter larger than the maximum diameter D of the shaft 22 is detachably mounted on the shaft 22 just behind the front end portion 22a on which the driven coupler 23b is mounted, and the driven coupler 23b is fixed to the shaft 22 so as to be unmovable in the thrust direction by the abutment of the collar 26 and the driven coupler 23b. The collar 26 may be composed of two or more collar elements circumferentially divided.