Hi, I have a Solo 647 that doesn't work. Worked for a little while after I bought it at a lawn sale but then I couldn't get it started, my wife's co worker tried to fix it ( not a chainsaw mechanic but works on small engines a lot I guess). He had no luck, he replaced the diofram in the carburetor but it didn't work. He also couldn't figure out what was wrong, he said it wasn't getting gas but didn't know why. I don't think he thought anything major was wrong, it didn't seize up or anything. Anyway is it worth bringing this to a chainsaw repairman or should I just junk it.