1, Material aging: The material of the front fender of Jialing coco 1 10 will age with time, especially when exposed to bad weather. Long-term ultraviolet irradiation, temperature change and vibration will cause the fender to become brittle or crack, resulting in drum collision.

2. Instability in installation: The front fender of Jialing Coco1/Kloc-0+00 motorcycle is not installed firmly or the bolts are loose, which will cause vibration and * * * vibration during driving, leading to drum collision.