The round black part on the left handlebar of your scooter is a standard bicycle bell. Its purpose is to alert pedestrians or other individuals of your presence and to ensure safer navigation in shared spaces.
In the event that the bell is not working as intended, you can try adjusting it by carefully pulling it up and away from the handlebars to loosen it. However, please exercise caution when doing so. If pulled too forcefully, the bell may come off, but don't worry as it can easily be reattached without the need for any tools. Simply align the bell properly and push it back onto the handlebars until it clicks into place.
By loosening the bell slightly, you should be able to restore its functionality and make it ring again when pressed. This adjustment will allow you to effectively use the bell to signal your presence to others while riding your scooter.
If you encounter any issues with the bell or have further questions regarding its operation, feel free to reach out to our customer support team for additional guidance and assistance.