Two string trimmers, weed wackers, whippersnippers, weed eaters, or whatever you call them. 2 strokes. Simple engines. The 15" cut has been taken apart and carb cleaned, but the fuel tank is cracked and leaks. Tried to fix with JB weld filler but it didn't hold for long. Both could be brought back to glory with some TLC. St -275 is running but sluggish. Free.