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  1. #1

    Default Mariner 25 hp year of manufacture?

    Hi, I just bought a 25hp mariner motor. It has a serial number OC154733. I wonder what year it is? Also it is a 2cylinder engine. I assume it must be a two stroke and takes a 50:1 mix?

  2. #2
    Join Date
    May 2007
    Location
    Inverary, Ontario, Canada - The Great White North Eh!
    Posts
    9,113

    Default Re: Mariner 25 hp year of manufacture?

    That's a 1989 Mercury/Mariner - so just a 25 Merc with different paint and decals, otherwise mechanically identical.

    Yes, it's a 2 stroke and yes you mix your gas at 50:1.

    Merc called for 87 octane gas (91/92 RON) and TCW-3 rated 2 stroke oil.

    Great motor, parts are still mostly available from Merc and from aftermarket companies such as Sierra and CDI.
    Graham

    A "professional" is someone who gets paid for their work - it doesn't necessarily mean they are good at it :)

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