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How to Replace the Spark Plug on a Sym Sport Rider 125

Model: Sym Sport Rider 125
Part: Spark plugs

Video tutorial

Today, let's go through the instructions for removing and replacing the spark plug on the Sym Sport Rider 125 scooter. First, place the scooter on its centre stand and disconnect the spark plug cap or connector found at the front of the engine.

Use a socket wrench with an extension to unscrew and remove the spark plug, as shown in the video. Now, install the new spark plug of the correct type and with the same thread pitch; screw it in by hand and then tighten gently with the wrench, finally reconnecting the electrical connector!


Updated on 15 August 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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