While riding, you notice smoke and flames coming from your motorcycle's engine area. What should be your first and most important course of action?

1. Stop safely, turn off the engine, move a safe distance away, and then call for emergency services.
2. Attempt to ride to the nearest petrol station where a fire extinguisher might be available.
3. Keep riding to try and put the fire out with the airflow.
4. Stop immediately, even in live traffic, and try to smother the flames with your jacket.