Remove the lower cover for the toothed belt by unscrewing the "arrow" bolts and opening the clamps.
Observe the position of the pointer "arrow on the left" of the tension roller and press hard with your thumb on the toothed belt "arrow on the right". The arrow should move to the side. Remove the load from the toothed belt again. Turn the crankshaft in the direction of engine rotation by 2 turns. Check the tension of the pointer of the tension roller. The pointer should return to its original position. If the pointer is not in the original position, replace the tension roller.
Installation
Installation is in the reverse order, in this case it is necessary to install the poly V-belt pulley for the crankshaft.
This publication is borrowed from the resource: audimanual