This video gives a breif description of a China made 200cc Dirt-bike. Although your bike may differ in the look or the model of this particular bike, the components shown are pretty common.
Take special note of the exhaust nuts that hold the exhaust pipe onto the bike. A comon problem with dirt-bikes and scooters is that these nuts tend to vibrate off. If that happens, you can burn up the gasket between the exhaust pipe and the engine. This will make the bike very loud, but more importantly can damage your valves.
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