I have 2 heads that are the toro/rain bird canister style that randomly decide they are going to get stuck and water the street and my driveway. If I go kick them slightly they start moving again. How do I fix this?
Check your irrigation water pressure. Up to a point more pressure make them more reliable. It needs the power to make the ratchet work and lift the cover properly. There are other things to check but this is a start. JMHO Aloha