If you can't start it with the kick start lever don't try other methods of starting. You will only risk further damage if something is wrong with it. Check the basics... fresh gas, enough gas in the tank, new spark plugs, plugs actually sparking, there are only a few basic things needed to run. If you don't have gas, air, or spark you know you will need to dig further.
I'd have to say it's something electrical off the top of my head.