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99 YZ400F Carb adjustments questions.....

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I just bought a 99 YZ400f but it doesnt run very good. I dont know what the carbs settings are right now, but it's probibly not right. Can someone tell me how to get it back to the stock settings? Also is there a seperate drain for the transmission or does all the oil come out of one drain hole? And can anyone tell me the valve clearance specs for that year bike? :smirk:

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