The sprinkler hole is about 2 inches across, and the broken riser you need to remove is only half an inch. If you are lucky, there will be a little stub of the broken riser sticking out of the PVC.

Step 2: Remove the broken sprinkler head. The sprinkler head is attached to a small pipe called a riser, which connects it to the water line. To remove the broken head properly, follow these steps: ...