Standard 5/8" spark plug socket will work. Don't need any of those super thin walled ones like some require. You'll need a short extension. Suggest compressed air to blow out any dirt and small rocks from the recesses around the spark plug before pulling it so nothing falls into the cylinder hole. Also suggest going from a series 7 plug to an 8 as it's a bit hotter but not too hot like a 9. This was a suggestion from Gerry at CSC.
Joe
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2017 BMW F800GS Adventure
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