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Today's instructions will guide you through removing and replacing the spark plug on the Piaggio Vespa ET4 125 scooter in simple steps. First, place the scooter on its stand and open the seat to access the under-seat compartment; then remove the plastic cover to access the top of the cylinder head by disconnecting the spark plug connector. Now, unscrew the spark plug with a socket wrench, remove it, and replace it with a new one; hand-tighten the spark plug before tightening it with a wrench, reconnecting the lead, and reassembling the under-seat cover!

Posted on 2 April 2026 by ScegliAuto

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