Working on a Husqvarna blower (model 132HBV) . It is very difficult to start, always has according to owner. He reported when he would get it running it would run for about 5 minutes and die. It had sat unused for about a year. It has good compression and spark. Initially I noticed the fuel line was rotten. Replaced the fuel line. Cleaned fuel tank and put fresh gas in.The only way I could get it to start was to place fuel in directly in the cylinder. It would run for about 5 minutes and die just as the owner had told me. Replaced carb gaskets and cleaned the carb,,,,same thing. Any suggestions?