Gasoline engines
The tension of the drive belts should be checked periodically and adjusted if necessary. At the same time, check the belts for cracks, wear, burning, and other defects and replace them if necessary.
You should also make sure that the belts do not touch other parts of the engine. When replacing a belt, it is necessary to adjust the tension of the new belt again after two to three weeks of vehicle operation to remove the slack resulting from the belt stretching.
Diesel engine
Inspect belts regularly for cracks, wear, burning or other defects and replace if necessary.
You should also make sure that the belts do not touch other parts of the engine.