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How to Dismantle the Engine of a Derbi Senda 50?

Model: Derbi Senda 50cc
Part: Engine

Video tutorial

The engine block of the Derbi Senda 50 can be dismantled by completely extracting the assembly from its housing, removing the side panels, and disconnecting the connectors. Once the engine is extracted, loosen the screws securing the two half casings to remove them and access the internal components.

You will need to remove the ring that secures the piston to its connecting rod and loosen the bolts securing the clutch. This will allow you to replace the necessary parts and reinstall the engine.


Updated on 18 September 2026 by ScegliAuto


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Vespa Immobiliser: How to Transfer the Chip from the Old Key

In the case shown in the video, the new keys are not recognised by the ECU: the Vespa starts but does not run (thus the immobiliser is active). The solution shown in the video involves locating the immobiliser chip in the old key (the one recognised by the ECU). Open the cover on the key (only red master keys or some blue ones), remove the chip (which is a small black cylinder or rectangle), insert it into the new key in place of the new one, and try to start. Now the key will work. If the master key is red, it will definitely work. If it is blue, it might work: you need to cut the silicone; this is possible but a delicate operation. If it is a black clone key, then it is a system that does not work.

Watch the video!


by ScegliAuto

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