| 摘要 |
To prevent the dispersal of water in a watercraft body, prevent interference of a coupler with piping, and prevent deterioration of the piping. An engine is mounted on a watercraft body with a crankshaft of the engine extending along the longitudinal direction of the watercraft body and a shaft of a jet pump is coupled via a coupler to a rear end of the crankshaft in such a manner so as to be disposed on an extension of the crankshaft. A coupler cover is provided for covering the coupler, and piping for cooling water, which is in communication with the jet pump, is fixed onto the coupler cover. A turbo-charger is disposed over the coupler, and the piping is fixed on the coupler cover at a position between the coupler cover and the turbo-charger. The coupler cover is turnable around the shaft.
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