Part 2 MS290 to MS390 Engine Conversion Swap 46mm to 49mm 56cc to 64.1cc

Описание: 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.

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.

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Decompression Valve Plug: https://amzn.to/3DRuyMw

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Engine from eBay: https://ebay.us/AaeiEk

#Stihl #MS290 #MS390 #StihlUSA

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