Remove/install tensioning rail timing chain on 281 engine in model 453 smart fortwo; exploded view with numbered callouts showing tensioner, rail, pin, and chain locations.

Engine timing chain assembly diagram with four numbered components and removal/installation procedure table.

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See all Powertrain figures for the Fortwo / Forfour (453), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.