Just took it out of storage and now it won't start. It tried to start after cranking it but didn't. A briggs and stratton yard machine.

Empty any old gasoline from the tank for starters and fill it with fresh gas. Old gas is a killer on lawnmowers. Also check your spark plug to see if it is clean. Be sure to check the oil in the machine also. If it worked last fall when you put it away, it should work for you now in the spring.

twinkiedooter is correct, clean the entire fuel system including the carb and try again.

My yard machine won't start it was already acting funny the last time we used it now it won't start at all