The tractor has a neutral switch, and the pto switch. The tractor should only start in neutral and when the pto is off. 11 is the neutral switch and 17 is the pto switch. You may also want to check the fuses in the control board.
I checked the fuses and they were fine. Should I get a reading on the two small wires that run from the ignition switch to the circuit board? I'll also try to check the neutral and PTO switches tomorrow.
After checking the switches you told me about I found that my PTO switch was bad. I appreciate your help in determining the problem with my mower.