Part 3 MS290 to MS390 Engine Conversion Swap 46mm to 49mm 56cc to 64.1cc

This MS290 chain saw was donated to Nature's Cadence Farm by a very good friend of the family. The friend asked if I could show how to replace the motor in a video, so I did. I decided if I was going through all of this I was going to " upgrade ". I went from a 46mm bore to a 49mm bore (MS390). This is a multi part series that is broken into three sections Part 1: Disassembly , Part 2: Assembly , Part 3: Final assembly and start up. As an Amazon Associate we may earn from qualifying purchases made through these links. Engine: https://amzn.to/39trvvn Decompression Valve: https://amzn.to/3jFgH1L Decompression Valve Plug: https://amzn.to/3DRuyMw As an eBay Partner we may earn from qualifying purchases made through these links. Engine from eBay: https://ebay.us/AaeiEk This process is very similar to MS290 MS310 MS390 029 031 039 The parts in the engine kit were: jug cylinder piston rings wrist pin snap ring connecting rod crank bearing bearings seal seals crank case bolts. Basically a complete engine. #Stihl #MS290 #MS390 #StihlUSA Visit our Kit Store to see the products we use everyday: https://kit.co/naturescadencefarm  Instagram:   / naturescadencefarm   Facebook:   / 100015161104732