Lawn mower care: Experts say old gasoline is one of the main suspects when a mower won't start. Run the remaining gas out of the mower or drain it at the end of each mowing season and use fresh gas in the spring.

Monitor the oil level and look for floating debris or oil that looks dark black. Old or contaminated oil should be drained and replaced. Consult your manual for the correct method and type of oil to use.

Also, clean out the undercarriage. Use a wire brush to scrape away grass clippings and dirt; spray remaining debris away with a hose. Always disconnect the spark plug beforehand.

— Angie's List