Carb Issue

I have a 01 YZ426f. How do I richen the mixture to the carb. I have been told that this will lower operating tempatures. Any step by step guides with pics?

How do I richen the mixture to the carb. I have been told that this will lower operating tempatures.
You were told wrong. Long before a 426 gets so lean that it causes a heating problem, it will start running poorly.

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