I bought a Trimmer mower yesterday. I was actually supposed to buy it last week, but the person selling it said he noticed a gas smell, so he took it in. He took it to a reputable shop which supposedly found the problem within 5 minutes. They cleaned the carb, changed the oil, charged him $50 and sent him on his way. I have the receipt dated 5/28/2010. Now I have the mower. I ran it last night for an hour, put it in the garage, and was almost knocked out by the fumes when I went into the garage late last night. I opened the door to the garage and put a box fan in the garage in order to avoid a disaster. So, if in fact the shop did "fix" the carb last week, what are my possible options? It has to either be the fuel line or the gas tank, correct? I can find no wetness anywhere, just a very strong gas fume smell, as if someone spilled about a cup of gas on the floor in my garage. Could it be there there is debris in the gas tank that reclogged the carb? Other than the the fuel ine and gas tank, there's nothing else in the system that touches gas, correct? Any advice would be appreciated.