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  1. #1

    mercury racing 575s

    Has anyone been having any problems with these motors what kind of hours logged before rebuild.

  2. #2
    Platinum Member Platinum Member FormulaFan's Avatar
    My Boats:
    2006 Formula 400SS
    Join Date
    Apr 2002
    Houston-Austin, TX

    Thumbs up Mercury 575's

    I have about 60 hours on mine. I had to switch to a hotter spark plug to eliminate an idling problem. Other than using a lot of fuel over 4,000 rpm, they are great! If I had to do it over again, I would have chosen the 525's. They run almost as fast, use less fuel, cost a lot less, have closed cooling, and no blowers to maintain. I am still trying different props to get the max rpm and speed. By the way, the sound of these motors may be worth the price!

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