If anyone is thinking about purchasing a Stihl FS45 string trimmer - don't. I can honestly say that the one I have has serious carb issues. Absolute junk. The Chinese made Zama carb seems to me to be deteriorating internally. It ran good the first year. Since then I have had to take apart and clean the carb about four times. The carb body looks to be corroding inside. The needle valve has been stuck a couple of times. Carb cleaner and the air compressor usually "fix" the problem. Once it starts it always runs great. I have Stihl 026 and 032 saws and an SH85 blower that uses the same fuel mix, from the same fuel tank, that have sit WAY longer before running than this FS45 POS. I had to take the carb apart again tonight to get it running. Running it out of fuel for the whopping two weeks of storage has helped some, but not tonight. Buyer beware. I read of replacing the Zama with a Walbro used on the Stihl pro trimmers. Anyone ever done this? I can't recall the Walbro model.