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|Brian M. Wildt||HI,
I have an 8 year old Murray garden tractor with a 14 hp Kohler engine. When I turn the key to the off position the engine will not shut off. I recently gave it a good cleaning and thought that the ignition switch may have gone bad. However I tested it and it is fine. I've checked all the wiring and no shorts. I'm stumped. I've replaced the ignition switch and same problem. first: Is there anything else I can check that may cause this problem?
second: How do I safely get the engine to stop, other than pulling the plug wires or pulling the choke(as a last resort)?
Thanks for the help,
|Dennis||On a magneto engine, when you turn the ignition switch to the off position, it makes a connection between the (M) terminal and the (G) terminal.
Possibly the (L) and/or (A) terminal(s) as well.
The (G) terminal is connected to chassis (grounded) and causes the magneto to be shorted out (killing the spark.) If the (G) terminal is no longer wired to the chassis, there is no way for the magneto to short out.
Trace the magneto wire from the (M) terminal of the ignition switch to the engine and make certain that there is no breaks.
Also trace the ground wire from the (G) terminal of the ignition switch to the frame to make certain that the ground connection is good. Make certain the connections are not corroded or loose.
If both of these are OK, the trouble must lie inside the magneto itself. Possibly a broken connection. You will have to pull the flywheel and have a look.
|joel||most of the time there is a wire from the key switch to the govener assembly. it is yellow on mine it is the kill make sure that everything dealling with it is good like the connection