If a Toro rotor isn’t popping up, the issue can often be traced back to low water pressure, debris, or a damaged sprinkler head. Start by checking for clogged nozzles or dirt packed around the riser, since this can prevent the rotor from extending properly. Flush the head by removing the nozzle and briefly running the zone. Next, inspect for leaks and broken pipes. Also consider if there are too many sprinkler heads in the same zone, which can reduce pressure. If the rotor still won’t rise, replacing the rotor may be the easiest fix.