Echo curved shaft string trimmer model GT-2200 with 21cc two cycle engine. The carb is Walbro WY. Trimmer seems to have low hours based on the amount of wear on the clutch shoes. This trimmer was obtained at a farm auction for $5. It was covered by layers of muddy dog hair. Cleaned exterior, muffler and fuel lines, added fresh fuel, starts easy and runs well. Good compression. The lower shaft bearing is of good quality and runs cool. Clutch works fine and shows little wear. The air filter cover was removed for cleaning, it was replaced after this video. This model is probably from the late 1980s and has a low serial number.