what model is it ?most piaggio four strokes use the leader engine and the spark plug is behind a black plastic panel that you have to remove to get to it properly on the right hand side of the cylinder head as you nsit on the bike.ok good luck ps you need a 16mm plug socketthe plug is a cr7eb i think.ngk plug
adam bike doctor
November 2009
spark plug screwed into top of cylinder head.
rayb
November 2009
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