Last night my Lawn boy let me down for the first time in 27 years. A week ago while cutting the grass, the engine did not seem like it was running to full potential. (Say 90% power). Last night I started it and it sounded like not full power again. I cut about 2 feet and it died and would not re-start. I changed the spark plug, drained the gas and bought new gas, but still nothing. I looked to see if I had a spark by pulling the plug and pressing it against the block, but didn't look like I was getting a spark. Could this be a problem with the ignition coil? Does the model even have anything as such? It's not electric start and has no self-propelled. Just an on/off switch. Can I bypass the on/off switch to see if the switch has gone bad? I sure dont want to lay my old friend down after such a long relationship. Any thoughts would be appreciated.