Most likely the kll wire has fallen off at the engine. It's normally connected to a tag on the speed control assembly just behind the air filter. If not, check the connector on the back of the ignition switch.
If all that checks out, use a screwdriver and ground the 'stop' connection (located as above) while the engine is running. If the engine still does not stop, the kill wire has fallen off at the coil (under the blower housing).
Assuming the engine DOES stop, suspect the ignition switch.
phil_saunders@bigfoot.com
Phil Saunders, February 2009
