JustJunque
Also for your problem, JustJunque, the most common things to happen when a mower won't start is: 1)the starter cord has gotten too slack, 2)the spark plug is fouled or worn out, 3) the carburetor is gummed up, or 4)there is too much grass clump buildup on the underside of the deck.
I have a carb-less Troy Built mower I bought brand new in 2008, it's never given me any troubles at all and I have done no service to it other than 1 oil change and right now the wheels are worn out. I also do not thread the starter rope through the handle, I leave it at the base of the engine. It keeps it from getting in the way and preventing it from being damaged or frayed.