My 2007 Kawasaki Prairie 360 runs rough ,no power above idle speed. I rebuilt carb after cleaning in ultrasonic cleaner. New plug. Still misses and has no power above idle speed, not at medium or high rev. Removing air box cover helps a little but still rough. What else should I try?

 

Got some searchin to do...here is my list of easy checks, after that you may need a real factory mechanic. 1st is a plug check to see if rubning rich or lean. After running for a short while pull plugs and check if black for rich or lite gray for lean condition. Check actual spark to see if it is blue for a hot spark or yellow for a weak spark. Did you use a rebuild kit with new parts and gaskets or just a clean and reassemble, which rarely works? Did you remove bowl drain plugs and check for proper fuel flow? Last of all a compression check, one of these basic tests will be off and that is where the problem probably is at