Crankcase gasket for Viper 125-200 cc motorcycles and similar (China, Minsk). The gasket seals the joint between the crankcase halves or its cover and keeps oil from leaking out and air from being drawn in.
Replace it every time the crankcase is taken apart and whenever oil seeps along the joint. Before installation, the surfaces are cleaned and degreased. If you are not sure of the cause of the fault, first diagnose the assembly so as not to replace anything unnecessarily.
