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Trying to tune my carb using these instructions but I'm confused about a few things. At the beginning it references two different idle mixture screws, depending on which carb you have one is equipped with a RED screw and the other WHITE. It doesn't specify which carb comes with what screw and mine looks neither red or white. My carb is a Nikki part #808069 Then, a few steps later it says to "turn the valve" a certain way. What valve?!! Is there a screw or something that is also referred to as a valve? My guess would be what the instructions refer to as the air fuel mixing screw because it looks and I believe functions similar to a needle valve but I'm not certain on that. Could someone please shed some light on this for me. I've got snow to plow and this carb tune is keeping me from doing that. Thanks in advance...Cup
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