Go to Kawasaki.com and print a parts diagram of the carburetor from the Parts Diagram section. Then disassemble the carburetor and clean the pilot circuit. Do not try to just squirt it out or use air pressure, but take it apart and inspect each and every component to be sure they are clean. Use a good quality motorcycle carburetor cleaner that does not foam, or you will lose parts in the foamy mess.
Count the turns on the pilot screw to remove it, and put it back after the passages are clean with the same number of turns so you have a good starting idle.
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