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How to Dismantle the Engine of the Derbi GPR 125?

Model: Derbi Gpr 125
Part: Engine

Video tutorial

To dismantle the engine of the Derbi GPR 125, you need to loosen all the screws that secure the part within its housing, so it can be extracted. Once the engine is removed, you can loosen the screws that secure the clutch cover, which can be taken out by unscrewing its fastening screws.

After the old clutch is removed, you can unscrew the screws that secure the semi-cover of the engine on the opposite side, removing it to access the components inside. This way, you can replace all the additional internal parts.


Updated on 26 September 2026 by ScegliAuto


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How to Replace the Piston on a Derbi GPR 125

To replace the piston on a Derbi GPR 125, loosen the bolts securing the cylinder head to its housing, allowing it to be removed along with the valve cover. This will enable you to access the bolts securing the cylinder at the top of the engine, allowing for its complete removal and revealing the underlying piston. The piston can now be freed from its securing bolts, enabling you to position the new piston onto the corresponding conrod. After installation, refit the engine components.

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by ScegliAuto

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