i have run the little echo saws for near 15 years. got a good 8 yrs or so out of my 1st 30cc echo. left it bone stock with 12" bar and traded it in for the same saw back a few years ago when i started having carb trouble. never even changed the plug. GREAT lil' limbing saws. I did do a muffler mod and opened the carb up on the second 30cc saw, thanks to reading how to do it on here!! It really gave the little saw some more bang. I passed that little saw to my brother because I moved up to a cs400 a few months ago. If this saw holds up as well as my other Echo equipment, I should be good to go for another 8 years or more before shopping for another limbing saw.
Hope you get the same bullet proof, dependable service from yours as I have gotten from mine.