I have had trouble with all three Stihl power tools I've owned. First the 017 chain saw has to have a new carb after about a year of very infrequent use. Second was the stick edger... same thing, it had to have a new carb. These both were fixed under warranty. This also was used infrequently, and both had Opti-2 oil mixed with the gas their entire lives. This unit was also very hard to start. Now my 2 year, 4 month old FS-85 trimmer is acting the same way as the other two. I know it will also need a new carb, but no warranty help this time. This thing looks like its new, but itll probably take $100 to fix it. Everyone here can sing the praises of Stihl all you want, but from my experiences they are trouble. Apparently Stihl is cutting corners with cheap carbs hoping they will last to the end of the warranty period. Now Ive been buying Echos, Husqvarnas, and Kawasakis, and they are far more long-lasting and better performers.