New member, I have a John Deere XTX38 with a 13HP Kohler Command. All of a sudden it does not do anything when turning the key, no click even. Battery tests at 12.6, I replaced starter, solenoid, and key switch. When turning the key I have 12 volts to all 4 points on the selenoid, and to the starter, and rectifier. When I jump the solenoid, it cranks , just wont start. PTO is off and seat switch and brake switch tested ok. Any help would be appreciated, thanks in advance.