Hi, My name is Denise Nettles. MY question is the following, I have a Toro self-propelled lawn mower, just got it brand new 3 months ago. Now it will start but will not keep running. I have changed gas, and the plug. Do you have any idea why it will not keep running.

To be honest I would not repair a 3 month old mower, take it back. Its under warranty and you should not have to fix it yourself. Where did you buy it? Does it run longer if you start it without the gas cap on the tank?