Do I need a special screwdriver to adjust the carb on a 2006 Kawasaki bayou 250. not idling right after cleaning.

call a dealership and have them cross reference the part numbers to see if they are the same

first I'd clean the carb, new spark plug. I've seen a bad cdi cause that but thats the last thing I'd check cause $$$

Have you tried to lower the idle? When an Auto/5speed shiftable transmission is stopped in gear the drivetrain holds it back or loads it down a bit. If you take off a load the idle will rise. Sounds like your idle is too high. Do you have your idle set high to keep it from stalling?

timing may have jumped and bent the intake valve causing it to blow back into the carb on the compression stroke.

clean your carb, check for compression.

U have a fuel delivery problem. Carb float not getting stuck? Carb jets adjusted properly?

!. New spark plug
2. New or CLEAN air filter
3. CLEAN and properly set carb.
4. Air screw should be about 2 turns out AFTER lightly seating.
5. Adjust idle speed to your liking, but not too high.
6. Refinement is made with 1/4 turns of the air screw.

Make sure the needle/seat spring is still there. also make sure your fuel filter is clean enough to keep up to your carb's new thirst

do you mean the idle air fuel mix screw adjustment? its 1.5 turns out.

Had a similar problem, I rebuilt the carb and fixed any gaps/cracks in the intake boots and carb-engine gasket. runs ok now