I just bought a house, and for the outside, it has irrigation water. There
are several large Rainbird sprinklers, about the size of a coffee can set
into the ground.. They pop up, spray one direction, then go splut, splut,
splut, and go the other way. They seem not to be tripping when they get to
the end of their range, and not returning.

Are these things rebuildable? Are they worth it to rebuild? I have others
that just sends up a popup that is about two inches in diameter, and eight
inches tall, and the whole things makes circles, or parts of circles,
depending on how they're set. They are for the most part, working okay, but
a couple seem to need attention. Are these like other sprinklers where you
just take them off, take them apart, and watch for little rocks and crud
that are making them not work?

Help appreciated.

Steve