I agree with lawnboy dan...
If you don't want to get bit by crocodiles, stay out of the water they inhabit...I owned Stihl in the past and the ONLY piece of equipment I owned that was made by Stihl that didn't give any problems was the 2 stroke, 2 stroke, 2 stroke, 2 stroke, 2 stroke, 2 stroke, 2 stroke, blower. What kind of blower? 2 stroke. What Stihl equipment did I have problems with? Not the 2 stoke. BAM! Don't want to adjust valves? 2 stroke. Don't want the issues of the 4 mix? 2 stroke. Want a good fix? You guessed it...Don't buy 4 mix!