The Timing belt is an important part of the engine air distribution system. It is connected to the crankshaft and matched with a certain transmission ratio to ensure the accuracy of the intake and exhaust time. The use of belts rather than gears for transmission is due to the low noise of the belt, its small amount of variation and its ease of compensation. It is obvious that the life of the belt is definitely shorter than that of the metal gear, so the belt should be replaced regularly.
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