How to Maintain Your Lawn Mower

Photo:  Kenneth Chen

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7. Replace the spark plug

Remove and replace the spark plug, using a socket wrench with a spark-plug socket, which has a neoprene lining to protect the plug's porcelain casing. Even if the old spark plug is in good shape, for a couple of dollars a new one will perform better and ensure a smooth start come spring.

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Helpful Info
Skill Builder: How to Sharpen Lawn Mower Blades
Gallery: Eco-Friendly Lawn Mowers
Gallery: String Trimmers
Ask This Old House: Nonstick Mowers
Ask This Old House: Easy-Start Mower
Skill Builder: When Lawn Mowers Won't Start
Article: Fall Groundwork

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