Hi - After mowing the lawn (tractor ran fine) I shut down the machine. Later I went to move it and it wouldn't start and nothing happened when I turned the key. I then checked the oil and it was very low. I checked the crankshaft and the engine appeared to have seized. I was able to free that up and when I turn the crankshaft by hand I get resistance and compression. However, nothing happens when I turn the ignition key. No sound...nothing! I tested the battery and it is putting out 12 volts. All linkage between the battery, solenoid etc. seems to be tight and in good condition. How do I troubleshoot this issue and is there any way to get the tractor running and use it by bypassing the ignition? Thanks for your help!