saw bogs

What brings me here is my pesky tricky annoying saw, the Stihl MS (yep) 250. What a joy. It runs an hour perfectly. Then bogs and says "I'm tired". It likes to take breaks when I want to work and vise versa. Troubleshooting this saw is like a further insult. You do everything known to man to...

Hey All, I’m looking for some help. I have a Stihl 031AV that I have torn down to the case (without splitting it). I have checked each line, rebuilt the carb and cleaned all the ports and jets with torch tips, replaced the clutch side seal (now holding vacuum with no visible loss), have put in a...