An outboard motor has a driveshaft and a propeller shaft connected to each other while placing gears in between in a casing of a lower unit. A cooling water passage structure of the motor has main water intakes provided on the left and right of the casing, a cooling water passage which guides therethrough water taken up through the main water intakes to a cooling water pump, and sub water intakes disposed on the left and right of the pointed portion of the gear case provided to the casing to give an appearance of bullet in the front-back direction. The sub water intake on the left is allowed to communicate through a left cooling water passage with the main water intake on the left. The sub water intake on the right is allowed to communicate through a right cooling water passage with the main water intake on the right.


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    Title :

    Cooling water passage structure of outboard motor


    Contributors:

    Publication date :

    2015-09-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL



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