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    Mercury 9.9 idle mixture screw

    I just doesn’t idle very good you have to crank it in choke every time and turn the choke off and put in gear as soon as the choke is off and engine idles down but when you throttle all the way down in gear or neutral it just sputters then dies . Runs fine when you are doing anything but idle.
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    Mercury 9.9 idle mixture screw

  3. T

    Mercury 9.9 idle mixture screw

    2016 I’m pretty sure
  4. T

    Mercury 9.9 idle mixture screw

  5. T

    Mercury 9.9 idle mixture screw

    I’ve read there is a brass plug you have to remove to access the adjustment screw . Just wanted to get some how tos on how anyone else has removed the plug and do you have to replace the plug after adjustment.
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