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In this video tutorial, you will learn how to remove and replace the engine spark plug on the Piaggio Vespa 125 LX, as well as the 50 LX. First, remove the cover found on the floorboard; then, take off the under-seat compartment to access the top of the engine, and thus the cylinder head, as shown in the video. At this point, disconnect the spark plug cap and use a socket wrench with an extension to unscrew and remove the spark plug. Replace it with a new one, ensuring the correct thread pitch, screwing it in by hand before tightening with a wrench, following the video to the end!

Updated on 15 May 2026 by ScegliAuto

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