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Engine guides and mods

450 fortwo Belt Change

Modification Details

This page covers the AC belt and alternator/water pump belt.

Air Conditioning Belt

Look at the right hand side of the engine. It's not easy to see. Find the tensioner pulley wheel.
Use a Torx45 bit to loosen the screw arrowed in the photo below.

Push the pulley wheel towards the front of the car to remove the tension from the belt.

Using a Torx 40, Loosen the central bolt slightly.

Using the same Torx40, put it in the hole just to the left of the previous bolt and turn it anticlockwise.
The concentric pulley moves over even further.


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