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    Mercury 115 HP Four Stroke Engine Issue - Help!

    We bought a 20' Bennington SLX Tritoon with a Mercury 115 HP Four Stroke motor new in 2017. We are having intermittent issues with performance. At about 5000-5100-5200 RPM the motor will run fine for a bit (Maybe 30-45 minutes) and then will "lug" -slow/fast/back and forth. After a bit it...
  2. S

    Mercury 115 HP Four Stroke Engine Issue

    I have a 2017 Bennington 20 SLX pontoon boat purchased new with a Mercury 115 HP four stroke. Having an ongoing issue. When accelerating, motor sounds like it's trying to speed up but boat does not. At times it surges up to 6000 rpm or so and then goes back down. When you throttle back down and...
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