I've got a new OEM 925-3021 ignition switch installed, did a continuity test on each circuit at each key position per the wiring diagram, and all is okay. But the plastic connector doesn't seat all the way onto the switch which leaves part of the switch terminals exposed per the photos. Since the tractor get left out in the rain and snow, water easily gets to those exposed terminals. While I've got the gas tank out I'm thinking of filling that gap with silicone windshield sealant. I know I should put my five Cub Cadets under cover and bought a snow rated shelter for that very purpose. My wife Debra, who is pictured on my avatar, was going to help me with that but she died last year. Three bouts of cancer since she was 12 left her weak and the flu and pneumonia last year was too much for her to beat. Sigh....
Anyway, as I read the wiring diagram power gets to the coil from the ignition switch, via the seat switch. The coil also gets power via PTO clutch switch when it is turned off. Why the redundancy? Why not just rely on the seat switch to send power to the coil? Why would the engine shut down if you get off the seat when the PTO is off, since power goes from the PTO switch to the coil?
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