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How to replace the piston in the TM Racing SMR 125?

Model: Tm Racing Smr 125
Part: Checks and maintenance

Video tutorial

To replace the piston in the TM Racing SMR 125, access the internal components of the engine: specifically, unscrew the bolts securing the cylinder, which houses the piston. By unscrewing these bolts and disconnecting the connectors attached to the cylinder, you can remove it to access the piston: this can now be removed from its conrod by sliding off its circlip.

After the old piston has been removed, insert the new one and mount the previously removed cylinder.


Updated on 24 May 2026 by ScegliAuto


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by ScegliAuto

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