Hunter Professional Series Arc Adjustments

ARC ADJUSTMENTS
Adjustable heads are preset to approximately 180°.
Sprinklers may be adjusted with water on or off. It is
recommended that initial adjustment be made
before installation.
1. Using the palm of your hand, rotate the
nozzle turret counterclockwise to the left stop
to complete any interrupted rotation cycle
(Fig. 1).
2. Rotate the nozzle turret clockwise to the right
stop. This is the fixed side of the arc. The
nozzle turret must be held in this position for
all arc adjustments.

To Increase the Arc:

1. Insert the key end of the Hunter wrench into
the adjustment socket (Figs. 2 & 3).
Lifting
Socket
Adjustment
Socket
Nozzle
Turret

RADIUS ADJUSTMENT

Insert the hex end of the Hunter wrench into
the nozzle/range-adjustment screw (Figs. 2 &
3). Turn the screw clockwise (into the stream
of water) to decrease the radius, or
counterclockwise to increase the radius.

PRECIPITATION RATE ADJUSTMENT

For excessively wet or dry areas, the
precipitation rate can be adjusted—simply
replace the existing nozzle with a larger one to
increase, or a smaller one to decrease, the rate
of precipitation.
Note: It is not necessary to disassemble
the sprinkler to make adjustments.
Hunter Industries Incorporated • The Irrigation Innovators
U.S.A.: 1940 Diamond Street • San Marcos, California 92069 • TEL: (1) 760-744-5240 • FAX: (1) 760-744-7461 • www.HunterIndustries.com
Australia: 8 The Parade West • Kent Town, S. Australia 5067 • TEL: (61) 8-8363-3599 • FAX: (61) 8-8363-3687
Europe: Europarc, Bât. B14 • 1330, rue G. de la Lauzières • 13855 Aix-en-Provence, France • TEL: (33) 4-42-93-03-68 • FAX: (33) 4-42-93-03-84
®
Professional Series
Fig. 1
Nozzle/Range-
Adjustment
Screw
ID Button
Nozzle
Socket
Fig. 3
2. While holding the nozzle turret at the right stop,
turn the wrench clockwise. Each full turn of the
wrench increases the arc 90°.
3. Adjust to any arc between 40° and 360°.
4. Wrench will stop turning or there will be a
ratcheting noise, when the maximum arc (360°)
is reached.

To Decrease the Arc:

1. Insert the key end of the Hunter wrench into the
adjustment socket (Figs. 2 & 3).
2. While holding the nozzle turret at the right stop,
turn the wrench counterclockwise. Each full
turn of the wrench decreases the arc 90°.
3. Adjust to any arc between 40° and 360°.
4. Wrench will stop turning, or there will be a
ratcheting noise, when the minimum arc (40°)
is reached.

NOZZLE INSTALLATION

1. Insert the key end of the Hunter wrench
into the lifting socket of the sprinkler. Pull the
riser up to gain access to the nozzle socket.
2. Using the Hunter wrench, loosen the
nozzle/range-adjustment screw. If a nozzle
is already installed in the sprinkler, it can be
removed by briefly turning on the water, or
by pulling on one of the nozzle "ears" with
needle-nose pliers.
3. Slip the desired nozzle into the nozzle
socket. Note that the socket is angled up
25°. Also note that the "ears" should be
located at the top (Fig. 4). Tighten the
nozzle/range-adjustment screw.
PGP, PGS, PGH
Gear-Driven Sprinklers
Fig. 2
Fig. 4
© 2001 Hunter Industries Incorporated
P/N 700026
INT-026.PDF
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