There's noise coming from the multi-ribbed belt. What do I need to look for?  
The most common causes of noise are misalignment in the drive system or incorrect tension. Alternative sources include small foreign objects (dirt, road debris or pilling) that get stuck in the belt grooves or are forced into the back of the belt. This can generate noise every time they make contact with the pulley. Belt noise can also be caused by any worn elements in the drive. You can find further information in our ABDS Troubleshooting Guide. It's available in print, in several languages, it can also be be viewed or downloaded online.div>