The video discusses the disassembly and proper assembly of the oil pump and the sealing of the branch pipe, how to do it correctly look and discuss...
And also I have a video about repairing an oil pump with a twisted adjustment screw it's also interesting:    • Как устранить подтекание масла в бенз...  
Interesting and informative: https: //   • Как увеличить мощность бензопилы, зам...  
   • Бензопила глохнет при нажатии на газ,...  
   • БЕНЗОПИЛА STIHL MS 180 плохо заводитс...  
And also the whole playlist of repair chainsaws on my channel: https: //   / watch   V = yiitJ_mMgyw & list = PL8Jd8hAXEJKo29Se4vLm4idWGouEzu0qe