How do put fanbelt on sprinter 208?

To replace the fan belt on a Sprinter 208, first ensure the engine is off and cool. Locate the serpentine belt tensioner and use a wrench to relieve tension on the belt. Remove the old belt from the pulleys, then route the new belt according to the belt diagram usually found under the hood. Finally, reapply tension using the tensioner and double-check the alignment before starting the engine.