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In this video tutorial, you will learn how to remove the cylinder head assembly, which includes the cylinder head, cylinder, and piston, of the Lml Star 125, as well as the Piaggio Vespa PX 125. This procedure can be performed even with the engine mounted on the chassis; start by unscrewing the cylinder head fastening nuts using a socket wrench with an extension, as shown in the video. Now, pull the cylinder upwards; then remove the piston retaining clip to take out the pin, sliding the piston out. Now you can replace the cylinder head assembly with the new one!

Updated on 13 May 2026 by ScegliAuto

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