For your consideration, here is the Maintaining Hunter Sprinkler Systems DVD.  The DVD demonstrates simple maintenance and adjustment tips for various Hunter components listed on the back of the DVD case.  The DVD is in nice shape.  The case has a little wear on it.  It will be mailed in a box for protection.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (292.321f-.8dx2)