Question
I have two different Rainjet sprinkler head models in my system.  I think both are out of production now.  One (the case is triangluar)has a small button to adjust the spray area and works fine. But the other one, Series 4000, has no button.  Is it adjustable?  They are hitting my new cedar fence and I am trying to reduce the spray area.  Suggestions?

Answer
Cindy,
I'm sorry to say, but I've never adjusted that sprinkler. I've searched the Internet for instructions with no results. Even tried the local "home improvement" store. I can't find an answer for you. Have you tried lifting off the cap? Some of the rotor sprinklers have a snap on cap which covers the adjustments.
Sorry I can't be more help.

Matt