Recommendation: When replacing the tensioner pulley without removing the toothed belt, there is a risk of the belt jumping over the pulley teeth, which will lead to a shift in the valve timing. Therefore, before loosening the belt tension, align the mark on the camshaft pulley with the protrusion of the rear belt cover (see ""Timing belt - replacement"). After installing the roller, the label should not move.
2. Loosen the tightening nut of the tension roller (see "Timing belt - checking the condition and adjusting the tension") and turn it off completely.
3. Remove the roller from the stud, keeping the belt taut.
Warning! There is a spacer on the idler pulley stud, do not lose it.
4. We install a new roller on the stud and fix it with a nut and washer, preventing the belt tension from loosening.
5. Adjust the tension of the timing belt (see "Timing belt - checking the condition and adjusting the tension").
6. Install the front timing belt cover.