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  1. J

    mercury black max-warning horn

    I have a 150 Black Max engine. A warning horn has recently started to go off when I start the engine and sometimes continues for the full time on the water. It is not the beep beep sound that the oil injection would make. It is a continuous horn that comes out from the Throttle/shift box in...
  2. J

    150 Black Max-Horn from shift control box

    I recently started getting a continuous horn from the throttle/shift control box. Sometimes it will stop after a few minutes, and other times it stays on over an hour. Any suggestions would be appreciated. It is not the beep beep sound from the oil injection, it is a continulus warning horn
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