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How to Replace the Gear Oil on a Sym Symphony ST 200i

Model: Sym Symphony St 200i
Part: Transmission fluid

Video tutorial

Watch this video to learn how to replace the gear oil or transmission oil on a Sym Symphony ST 200i scooter, following the instructions below. First, position the scooter on the centre stand; then, unscrew the drain bolt located under the transmission cover using a 10 mm socket spanner.

Once the oil has drained into a container for about ten minutes, screw the plug back in, replacing the small gasket; now insert the new gear oil using a syringe until the oil overflows from the hole!


Updated on 4 May 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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