Yes, motorcycles, including the Kawasaki Ninja 650R, have a starter system similar to cars. If your motorcycle is clicking but not starting, and you've already changed the battery, there could be a few possible reasons for this issue:
Starter Motor: The clicking sound indicates that the starter solenoid is engaging, but the starter motor might not be functioning properly. It could be a problem with the motor itself, such as worn-out brushes or a faulty connection.
Starter Relay: The starter relay is responsible for transferring electrical power from the battery to the starter motor. If the relay is faulty, it may not be delivering enough power to the motor, resulting in a failure to start.
Ignition Switch: A malfunctioning ignition switch can prevent the electrical system from receiving power, thus hindering the starter motor's operation.
Fuel System: If the motorcycle is not getting fuel, it will not start. Ensure that there is an adequate fuel supply, and check the fuel pump, fuel filter, and fuel lines for any issues.
Spark Plugs: Faulty or worn-out spark plugs can also cause starting problems. They might need to be replaced or cleaned.
Wiring Issues: Examine the wiring harness for any loose connections, damaged wires, or blown fuses that could be interrupting the starting process.
It's important to note that diagnosing and repairing motorcycle issues can be complex, and it may be best to consult a qualified mechanic or motorcycle technician who can perform a thorough inspection and identify the exact cause of the problem.