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How to replace the spark plug on a KTM Duke 390?

Model: Ktm Duke 390
Part: Spark plugs

Video tutorial

To replace the spark plug on a KTM Duke 390, you need to remove the ignition coil from the top of the engine cylinder, accessing it from the right side of the bike: once this coil is disconnected, you will be able to locate the underlying spark plug, which can be removed from its seat using the appropriate socket wrench.

Once the old spark plug has been removed, you can insert the new one into the cylinder: after it is inserted, reconnect the coil and check that everything is functioning correctly.


Updated on 3 November 2026 by ScegliAuto


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by ScegliAuto

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