The sprinkler delivers a wide range.
Turn the system on, and engage the hex socket screw on the sprinkler head with a 3mm Allen key. Turn anticlockwise for a longer jet, or clockwise for a shorter one.
Now the sprinkler delivers a minimum range.
Pebbles, sand, earth or other foreign bodies entering the head could cause the sprinklers to malfunction. Clean as follows: holding the stem with one hand, unscrew the upper part;
take out the filter and clean it, together with the upper part of the sprinkler, under running water;
reposition the filter and reassemble the upper part of the sprinkler.
Cod. 90095, 90097
Cod. 90053, 90055
Cod. 90041, 90043