A scooter with the safety feature of a headlight will require some amount of maintenance so you always have a fresh bright headlight. A headlight is generally sealed tight, so little or no water is going to enter the headlight fixture. Many scooters are also available with a scoop over the headlight to prevent additional moisture from reaching the interior of the headlight.
If you do find that your headlight is getting a bit dim, or that you have moisture in the headlight fixture you should replace it. Sometimes a large jolt can break the headlight requiring replacement as well. Every scooter varies in headlight replacement needs, but the headlight is very similar to that of a car.
The headlight that requires a bulb replacement will use a very small bulb, just a size larger than that of a bulb found on a string of lights. Removing the headlight can be accomplished using a screwdriver or a wrench. Some scooters are available with easy to remove headlights that require no tools at all but the movement of a few slip connections to remove the headlight. Simply remove the old bulb, insert the new bulb, and refasten the headlight to the scooter.
Headlights that...