Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions
Below are step-by-step instructions for replacing the engine coolant in a KTM Duke 390. First, place your bike on a stand and start by unscrewing the coolant drain screw located at the bottom of the engine casing, allowing the fluid to drain into a container for about ten minutes. Then, unscrew the radiator cap along with its thermostat valve, as shown in the video. At this point, top up with the new antifreeze suitable for your radiator, pouring in the correct amount!

Updated on 30 July 2026 by ScegliAuto

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