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  • Noise reduction

    I use a F25ae outboard for very low speed cruising in canals. The noise level is relatively high for the surroindings, mainly coming from the idling exhaust outlet. Can I temporally block this outlet and have all exhaust through the prop ?

  • #2
    I though 4 strokes were so quite at idle that the loudest thing was the tell tale stream hitting the water .

    what are you trying to sneak up on?
    hope you are not sneaking up during the night to take stuff.

    the idle releif ports are to releave the back pressure on the exhaust at low RPM.
    plugging them may not let it idle well

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