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How to Replace the Shaft Seals on the GasGas EC 125?

Model: Gasgas Ec 125
Part: Checks and maintenance

Video tutorial

To replace the shaft seals on the GasGas EC 125, loosen the nut that secures the sprocket, located on the left side of the bike. Once the sprocket is removed, moving the chain as well, you can locate the shaft seals positioned at the bottom of the sprocket.

Using a tool like a screwdriver, pry out the old seals from their housing and replace them with new spare parts. After replacement, reinstall the sprocket and the corresponding chain, ensuring everything functions correctly.


Updated on 6 August 2026 by ScegliAuto


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How to Replace the Shaft Seals on the GasGas EC 125?

To replace the shaft seals on the GasGas EC 125, loosen the nut that secures the sprocket, located on the left side of the bike. Once the sprocket is removed, moving the chain as well, you can locate the shaft seals positioned at the bottom of the sprocket. Using a tool like a screwdriver, pry out the old seals from their housing and replace them with new spare parts. After replacement, reinstall the sprocket and the corresponding chain, ensuring everything functions correctly.

Watch the video!


by ScegliAuto

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