The specific number of turns required for idle adjustment on the Kawasaki Ninja 250R can vary depending on various factors, including the bike's condition, modifications, and ambient conditions. While it's challenging to provide an exact number of turns for idle adjustment without assessing the specific circumstances, I can offer some general guidance.
The recommended approach for adjusting the idle on a motorcycle is to follow the manufacturer's guidelines outlined in the owner's manual or consult with a qualified Kawasaki technician. The manual will provide detailed instructions on how to properly adjust the idle speed and may provide a specific range or number of turns for the idle adjustment screws.
It's important to note that using a significantly higher number of turns for the idle adjustment screws than the recommended range could indicate an underlying issue with the bike's fuel system, carburetor, or air intake. In such cases, it is advisable to have the motorcycle inspected by a professional mechanic to identify and address the root cause of the issue.
To ensure optimal performance and proper idle adjustment, it's always best to consult the manufacturer's guidelines or seek assistance from a qualified technician who can evaluate the specific condition of your Kawasaki Ninja 250R and provide the appropriate recommendations for idle adjustment.