have a 26 hp briggs on a scag mower. engine was starting and running with no problems and the next day would start. when turing the key the only sound was clicking coming from the carburator. i replaced the two 20 amp fuses and the solenoid with no change. battery was/is charged fully, oil is at proper level, plenty of gas. safety sensors on the seat and steering arms apear to be working because when they are not engaged there is no sound when turing to key.