How often should the engine belt of a car be replaced?

[SanJeffrey]

The engine belt of a car should be replaced approximately every 4 years or 60,000 kilometers. It is a crucial component of the engine's valve timing system, connecting to the crankshaft and maintaining precise intake and exhaust timing through a specific transmission ratio. Serving as a vital link, the upper part connects to the timing wheel on the engine cylinder head, while the lower part connects to the crankshaft timing wheel. Steps to replace the engine belt: 1. Remove the protective cover and then the exposed generator belt; 2. Remove the engine crankshaft output wheel next to the oil filter; 3. Move the radiator aside and unscrew the bolts on the timing belt side of the engine; 4. Loosen the bolts securing the bracket on the pipe; 5. Remove the timing belt protective cover.