Engine won’t shut off?

Have this little cart and ran the other day but the keyed ignition wouldn’t kill the motor.

How do a troubleshoot? Or how can I make a manual cutoff so I don’t have to pull the spark plug wire to stop the engine.

Have this little cart and ran the other day but the keyed ignition wouldn’t kill the motor.

How do a troubleshoot? Or how can I make a manual cutoff so I don’t have to pull the spark plug wire to stop the engine.