So, on a semi related note, what do you do to preserve the fuel system of a saw or other two stroke that is only used sporadically? I love my saws but don't get to run them as much as I would. So they can go for weeks at a time without being used. What I have always done is, when I mix up a new can of fuel, dump out the old fuel in the saws to burn in my four strokes. Then I fill each one up about half way and run it for a few minutes to circulate the new fuel. This is what works for me at least, of course I always use fuel stabilizer.