Switch to heated drying. Low water temperature. Turn up the setting on the water heater or use a water heating option regularly. Not using a rinse aid such as Jet Dry or Crystal Clear. Using too little detergent.
Detergent contains ingredients which help to improve drying.
Increase the amount of detergent used as directed on page 16. Be sure dishwasher is being loaded properly. Refer to the User's Guide. Some items are difficult to dry in a dishwasher even under the best of circumstances. Cups and glasses with concave bottoms will hold water at the end of the cycle.