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I have a arctic cat 580 zr with mikuni carbs and was wondering how to adjust the carbs to the right setting they got switched out cuz it used to be a choke but i had to add a primer to it instead and now when i first start it up it will idle about 2500 rps and after i ride for a lil bit it will idle up to 3000 rpms. any input will be greatly appreciated.
 

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Just did this yesterday to mine. The big screw with the on it on the left hand side of each carb is your idle screw. Loosen this about a half turn on each carb at a time till you get your desired idle speed. Make sure they are set the same on each carb.

The big screw with the spring on it****
 
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