Originally Posted By: Rohan
We bought this lawn mower 3 years ago brand new and we used it maybe less than 5 times, after that it been sitting in the garage for 3 years. So yesterday we start the lawn mower it run for 4 min as we cutting the grass then died and now we can't get it running. We never changed the oil and old gas was in there. I know this sound stupid but any help will be great.
As others have said, dump the old gas, make sure the oil level is OK, add some new gas with blue Stabil at the cleaning rate in the directions. Replace the plug. You may need starter fluid to get it going.
Given the story I might guess your not prepared to take the carb off and clean it.
If it does not pop with starter fluid then definitely the plug and/or ignition.
Depending upon how expensive a mower it is, it may be time to roll it out to the curb and go to HomeDepot.