Certain scooters may develop an exhaust leak at the junction between the exhaust pipe and the muffler. Exhaust gases leaking past this junction's graphite gasket could damage surrounding components. As a result, the rear brake hose may be impaired or melted, increasing the risk of a crash causing injury or death. Correction: Dealers will install a redesigned exhaust manifold down pipe. Note: The graphite exhaust gasket must be replaced each time the muffler is removed and reinstalled. Failure to do so could cause an exhaust leak.