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    2003 - 225 hp Merc Optimax Shift problems (x2)

    I replaced the water pump on both motors after reviewing multiple Youtube postings on the topic. None of the Youtube posts cautioned the viewer (me) about proper alignment of the shift shaft. After successfully replacing the water pumps (following the video procedures) when testing with...
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    2003 - 225 hp Merc Optimax Shift problems (x2) moved to - Engine Repair and Maintenance - Mercury/Mariner Forum.

    2003 - 225 hp Merc Optimax Shift problems (x2) moved to - Engine Repair and Maintenance - Mercury/Mariner Forum. Moved the content of this topic to - Engine Repair and Maintenance - Mercury/Mariner Forum.
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    Merc Optimax 225 (2005) leaving oil slick

    I have 2 (2005) Mercury Optimax 225 Outboards on my boat - of the 2 stroke variety. Both motors leave a small oil slick on the water whenever I initially put the boat in the water and whenever I shut the motors off. I've brought the motors to 2 different mechanics for other repairs, and asked...
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    Prop choice when repowering - from single to twin engines

    Prop selection is driving me nuts! I’m just about done converting my 1995 Proline 240s (24 ft hull - 3,600 lbs) from a single 2003 Merc - 225hp Optimax to twin 2003 Merc – 225hp Optimax. The single engine was propped with a 4 blade – 14.75(diameter) 17 pitch prop. Maxed out ~5,200 RPMs and...
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