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  1. 9

    What size prop should I be using on a Mercury 200 2 stroke?

    I currently have 21p's on my twin Mercury 200's (they came with the motors) however I only get around 2100 RPM's at full throttle under load and boat will NOT get on plane. Are props too big? Any suggestions? Boat is 2320 Robalo. Thanks
  2. 9

    Twin 93 Mercury 200's have low RPMs at full throttle

    I have twin 93 mercury 200's 2 stroke carbuerated on a 2320 Robalo. I bought the boat about a year ago (bad mistake) and have had problems since. BOTH motors only hit around 2100 RPMs under load, full throttle and will NOT get up on plane. I've replaced both primer balls, fuel filters, and water...
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