After a long dry summer, I went out to start my riding mower for one last mow of the summer. It would not start. Put brand new battery and spark plug on. It does NOTHING! Won't crank, won't churn...nothing. Using a screwdriver I was able to short out the "starter relay" (the positive battery cable leads to this switch, under the seat, and a second red cable runs to the starter), and start the engine. As soon as I let off the clutch the engine died. Now, it won't even do that again. Do not have a clue as to what is wrong with the thing. Before I take it to a shop, and pay through the nose, I wonder if there is something I am missing. The last time I used it, I had no troubles with it what so ever. Hope someone out there can help me.