Grasp the sprinkler head of the sprinkler body.
Twist the sprinkler head to the left (counterclockwise) and fully unscrew it.
Pull the sprinkler head off of the sprinkler housing.
Grab the sprinkler body with one hand.
Clamp a pair of needle-nose pliers around the edges of the spray head nozzle on top of the sprinkler body.
Twist the spray head to the left to unscrew it and pull it off.
Insert the sprinkler adjustment tool into the pull-up slot of the spray head. Twist the tool to the left and pull the sprinkler stem up.
Insert the sprinkler adjustment tool into the radius adjustment screw on the top of the spray head.
Twist the tool to the left (counterclockwise), until the nozzle on the side of the stem loosens.
Pull the nozzle out.