"twfsa" wrote in message
news:bbe9f.21743$v_5.16129@dukeread07...
I ahve noticed that the sprinkler heads (Rainbird) are sticking in the up
position and fail to retract after the system shuts off.

They are 11 years old is it time to replace them as needed, or is there a
fix?

Thanks

Tom

Plastic types? Probably just sand or dirt that could be cleaned out but at
that age they probably should be replaced anyway. Always good to have some
spare heads.