Our uebler silage cart wouldn"t start the other day. After checking things, I found that it didn"t have any spark. I disconnected the low oil switch and the ground-out key switch to make sure neither were shorting out the ignition. I also checked the plug to make sure it wasn"t internally shorted out. It still wouldn"t start so I took the recoil starter and shroud off from the flywheel. The coil has a high tension wire going to the plug as well as a small stab connection on the opposite end. The stab connects to a wire that ultimately is connected the the kill switch and low oil switch. According to the users manual, this is a transistorized magneto. There is a small silver box bolted to the frame that connects to the oil switch and the small wire from the coil. With the plug wire disconnected and the coil unbolted from the frame, I tested continuity from the coil laminations to the small stab connection. The laminations are bolted to the frame to hold the coil in place so they are definiately grounded normally. It seems like the small stab should be isolated from the laminations, because I assume that is what grounds out the coil to shut the engine off...? Finally, my questions. 1. What is a "transistorized magneto" and how does it work differently?
2. I assume the little silver box is the transistor?
3. Should the small stab be isolated from the laminations? (Coil bad...) Sorry about the long winded post. By the way, its a Honda GX160 engine.
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