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Model: Sym Bonus 110
Part: Spark plugs

In this tutorial, you will see how to replace the spark plug on a SYM Bonus 110 scooter, a very simple and quick operation. You will need a 16mm spark plug socket and, of course, the correct replacement part. First, remove the panel located beneath the front wheel arch, then locate the spark plug and disconnect the corresponding power cable. Next, grip it with the socket, gently unscrew it until it is completely removed, and insert the replacement, tightening it securely but avoiding excessive force. Finally, reconnect the cable and test the spark plug by starting the engine.

Updated on 15 July 2026 by ScegliAuto

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