Drain and replace the oil (and oil filter if fitted). Remove spark plug and crank engine to distribute fresh oil. Re-check oil level, fill up with gas (in GAS TANK!!!) and start.
If you did not manage to start it with the gas in the sump, no damage should have been done.
phil_saunders@bigfoot.com
Phil Saunders
May 2008
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix lawn mowers.