Civic L4-1668cc 1.7L SOHC MFI (2003)
2. If you installed a new belt, run the engine for 5 minutes, then readjust the belt to the used belt specification.
Adjustment
3. Loosen the power steering pump mounting nut (A) and pump locknut (B).
4. Turn the adjusting bolt (C) to get the proper belt tension, then retighten the mounting nut and locknut.
5. Start the engine and turn the steering wheel from lock-to-lock several times, then stop the engine and recheck the tension of the belt.