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What is a model number, and where do I find it?

Ryobi String Trimmer Spark Plug Replacement #893

This video provides step-by-step instructions for replacing the spark plug on a Ryobi string trimmer.

All of the information in this replacement video is applicable to the following brands: Ryobi
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How your string trimmer works:

How It Works: String Trimmer
For additional repair advice and help finding your model number visit the repair help section of our website: String Trimmer repair help