1968 internatinal cub cadet 105 wont start

Ok my 1968 international harvester cub cadet 105 wont start. I started it up after sitting about a month it ran great then I parked it over night next morning it wont start. I think I may have flooded it cause the spark plug is fould up. called my shop and they said it might be a needle or flought in the carb. any ideas. my friend said to crank it with out the spark plug then put in a new one and it should start. thanks