Applicable scope: Dong Kang Dong Kang ISLe310 30, ISLe270 30, ISLe290 31, Dong Dong Kang Kang Dong Kang ISLe-C375, ISLe315 30, ISLe-C340, ISLe-C325 Dong Dong Kang Kang, Kang Dong ISLe325 40 related parts: cylinder body, cylinder gasket working principle and the cylinder sleeve form a combustion chamber installed on the cylinder body: the plane and fault analysis: crack, warpage analysis: the cylinder head fastening, improper operation, improper operation start or stop gasket caused by improper installation, insufficient cooling of the engine overheating