If you’ve noticed that your chainsaw no longer cuts as easily and cleanly as it once did, it’s a good time to learn how to sharpen the chainsaw blade and check for dull or sharpened teeth ...

He said a chainsaw blade travels around a chainsaw at about 75 mph. To avoid a chain kickback, you would have to be able to move away from a flying chainsaw from about 2 feet at that rate of speed ...