I service 10-12 chainsaws, cutoff saws, and vent fans every week at the fire dept. and Seafoam has been a mainstay to keep them running. Usually I can get them running again with liberal doses of Seafoam spray or Seafoam Deep Creep in the carb if I don't have time to take the carb apart. I was at a certification class from one of the power equipment manufacturers a couple of years ago and the engineer who headed up the repair dept. swears by it and gave me a case to try out. I'm normally leery of most additives but the Seafoam has proven itself so far.
