Modification and replacement of the beryllium valve seat - Honda CRF 250
Paul X
1,350,934 lượt xem 3 years ago 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!
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https://www.youtube.com/channel/UCyy3ef1h-y6hKCgOQntl_pg