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How to Replace the Engine Assembly on the Sherco SEF 450

Model: Sherco Sef R 450

Video tutorial

The main instructions in this guide will show you how to disassemble and replace the engine assembly (cylinder head, cylinder, and piston) of the Sherco SEF 450 enduro bike. In this specific case, remove the engine block from the frame, placing it on a bench to facilitate the replacement of the engine assembly; then proceed to remove the cylinder head, followed by sliding out the cylinder.

At this point, remove the piston retaining clip (removing the sealing ring), disconnect the piston from the connecting rod of the crankshaft; replace the engine assembly with the new one, following the video tutorial to the end!


Posted on 9 August 2026 by ScegliAuto


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Watch the video!


by ScegliAuto

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