Did you check the spark plug? Start there before tearing into the carb.
If it's black and all soot try burning it off with a lighter, put it back in a crank if it starts fine your mixture is too rich and your fowling the plug.
It sounds like plugged jets in the carb to me. It's not uncommon if it was sitting for a long time with old gas in the carb. A disassembly,good cleaning and fresh gas should fix it.