Bought an 025 for 100 off a Guy I work with...he told me nothing was wrong with it....picked it up..it ran alright...little hesitation..I was thinking Carb rebuild. ..I cut up 3 sycamore trees with it...my neighbor was there and suggested I needed a new sprocket..he could here metal rubbing..so it. Starting going south..starts not idiling and so on..flooding...took it to the stihl shop this morning... ..main bearings shot ...at least 150 to repair..if that's all it needs..told me not worth fixing...man this chaps my rear..I don't have much money...so this is a big hit for me...just the way my luck goes...so I'm sawless..well I got a piece of crap 30 CC polan that is very frustrating to use...