Modification and replacement of the beryllium valve seat - Honda CRF 250 HD

Hi. This video shows - step by step - repair and replacement of valve seat. Material of the new valve seat - beryllium copper. Caution Beryllium is harmful. Safety precautions must be observed when working with Beryllium! . . . for more interesting videos click ,, HERE " https://www.youtube.com/channel/UCyy3ef1h-y6hKCgOQntl_pg