Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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Many times when this problem occurs, it indicates that you either have a faulty operated presence safety switch, on one of your handles, or a loose connection, in the wiring connector, that connects to your operator presence safety switch.
These safety switches prevents your mower from operating, if you are not in a safe position for driving, or mowing with your mower.
Your kill/shut safety circuit, is falsely sensing that you are not in a safe operators position, and for your safety, it is shutting your engine down.
First, check for a loose connection, in your wiring connector. We can continue from here. Thanks!
I believe that your Operator Presence Safety Switch will have a yellow and green wire attached to it. Your safety switch is a Normally Open Switch.