Why does my Oscillating Sprinkler stop oscillating?

Locate and unscrew the orange tab on the opposite end from the hose connection (should be an orange circle about the size of a quarter). Let water flow through and exit the sprinkler to allow any debris to escape. Screw the tab back and try the sprinkler. If this does not help, fill the sprinkler with CLR solution from the tab and let it sit over night, this is also a helpful remedy.