I now have a 50cc Stihl. It is brand new and yet I have had it for a year I don't think I have ran a tank through it yet. I sold my old saw, a beast that I originally bought for milling beams for my timber frame house I built, it later became my firewood saw. Thing was it was a 95 cc, (the second biggest saw in Husky's lineup) and weighed around 19 lbs so was hard on my back to run very long. It would cut the bigger logs very fast however! The new Stihl MS 261C which is a pro saw, and thus able to be more easily worked on. Also about half again more expensive that a comparable household model.
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Here is a picture taken back from 05 when I first started milling beams with the 395 Husky. This was a fantastic running saw, always started and flat out performed very well too. Just was too heavy for firewood duties and while it took me a while to find a buyer willing to pay what it was worth I finally did, and bought the Stihl I have now.