Carb adjustment

stan.72064

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Apr 24, 2012
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I have a 2007 Mercury 50HP, 2 stroke. It is hard to start, and won't idle without stalling. I turned up the idle screw, still having the same problems, I know there are 3 screws on the Carb for adjustments but I don't know how to adjust them. I checked the fuel filter & it's clear. Motor has very few hours on it. How do I adjust Carb? Engine runs great on open water. Thanks
 
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