The honda manual says to start with the clip in the middle slot of the needle and start with the air fuel mixture out 1 1\4 turns from being lightly seated. If someone turned the air fuel mixture screw down too hard, they could have ruined the seat where the needle contacts, and that is not good. But lets not assume the worst. Get one of the one gallon cans of carb dip that you can soak the carb in all night, after you have disassembled it. Take out the 2 screws that hold the choke plate in place and remove the choke plate assembly for cleaning also, don't lose or overtighten those 2 little screws when you are putting the carb back together. Get yourself 2 of those small fuel filters and install the filters inline on both of the fuel lines between the tank and the carb. Some people blow compressed air into the carb after cleaning, but I don't personally recommend it, you can lodge some small piece of dirt into a passage and make it impossible to come back out. Let the carb air dry for and hour or two and carefully reassemble your carb using your new parts. Take your time. Be very careful with the high and low speed jets and the needle seat, they are brass and can get stripped out very easily if you over tighten them. Your carb is potmetal and can strip easily so snug down all bolts but don't overtighten them either. Inspect the carb carefully with a magnifying glass for any clogged air passages. Also check the carb body for any kind of gouges on the inside of where the carb slide goes and make sure the carb slide fits in snugly, but doesn't bind either. Check your float and make sure it floats and doesn't have anykind of holes in it that would let if fill up with fuel. Let us know what happens after reassebly.
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Originally Posted by fabiodriven
