When the starter button is pushed on 2003 Honda Fourtrax 350 what causes it to click?

The starter clicking is usually caused by a weak battery or a faulty starter solenoid. When the starter button is pressed, the starter solenoid receives power from the battery and uses it to engage the starter motor. If the battery is weak, it may not be able to provide enough power to the solenoid, causing it to click but not engage the motor. If the solenoid is faulty, it may not be able to properly engage the motor, even if the battery is strong. In either case, it is recommended to have the battery and starter tested to identify the exact cause of the clicking noise.