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Model: Gasgas Ec 250
Part: Engine

This is expert maintenance. Let's start the procedure with the cylinder already removed. Install the shaped gaskets (under the thickest gasket). Place the clips on the piston as shown in the video. Insert the roller cage into the conrod after lubricating it. Insert the piston with the arrow pointing towards the exhaust of the bike and secure it with the pin (also lubricate this). The circlip is an additional safety measure to secure everything. To install the cylinder, simply place it over the piston and slide the piston inside the cylinder until it is seated.

Updated on 31 March 2026 by ScegliAuto

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