The filter element (pleated cardboard) traps dust and keeps it out of the carburetor and engine. Fits 125–150 cc 4-stroke scooters. Brand: YOG.
A clogged element restricts airflow: the revs "hunt", power drops, the mixture becomes rich, and fuel consumption rises. Replace it according to the schedule, and more often when riding on dusty roads. Compare the size and shape with the old element.
