Toro 720G User Manual
720G ADJUSTMENT INSTRUCTIONS
The 720G part circle model is factory preset to 3 GPM, 180° arc and 25° trajectory. The full circle model is preset to 6 GPM, 360° arc and
25° trajectory. To adjust these settings, use the following procedures.
Adjust Arc (part circle models onl y)
Arc is adjustable from 40° to 360°
• Factory preset to 180°
• Only right side of arc
is adjustable
Tip – Arc can be adjusted wet
or dry.
Turn nozzle to left stop
before changing arc.
1. Insert Toro tool into small slot in nozzle top.
2. To
increase arc, turn tool clockwise.
To
decrease arc, turn tool counterclockwise.
Tip – Full turn changes arc 180°; half turn changes arc 90°.
2
Adjust Flow
Flow is adjustable from 1 to 9 GPM
• Part Circle - Factory preset to 3 GPM
• Full Circle - Factory preset to 6 GPM
Tip – Flow adjustment can be made
wet or dry.
1. Insert edge of Toro tool (provided)
into slot of flow adjust ring.
2. While holding top of nozzle with
thumb, turn flow adjust ring in either
direction to align arrow with desired
flow rate number.
1
Adjust Radius/T rajectory
Trajectory is adjustable from 7° to 25°
• Factory preset to 25°
1. Insert Toro tool through radius adjustment hole in top of nozzle cover.
2.
To decrease (–), turn tool clockwise
(7° minimum).
To increase (+), turn tool counterclock-
wise
(25° maximum).
Tip – 7°setting is not recommended for
newly seeded areas.
Install Sprinkler and Check Arc Setting
1. Install and tighten sprinkler onto a 3⁄4" threaded fitting
aligning arrow on cover with left watering border.
2. To check arc setting during operation, turn nozzle in
direction of rotation, releasing just before end of
arc – observe reversing point. To quickly
change direction of rotation, turn nozzle
slightly beyond the arc border to actuate
the reversing mechanism.
3. Fine tune arc setting by turning arc
adjustment slot right to increase or left
to decrease.
3
4
A
R
C
-
+
A
R
C
-
+
6
4
34
30
23
8
1
1
1 5
1 7
1
1
2
3
4
4
6
8
9
1
2
1
2
GPM
-
+
A
R
C
-
+
R
A
D
I
U
S
l/mn
+
A
D
J
6
4
34
30
23
8
1
1
1 5
1 7
1
1
2
3
4
4
6
8
9
1
2
1
2
GPM
-
+
A
R
C
-
+
R
A
D
I
U
S
l/mn
A
D
J
–
3
11
2
1
34
30
23
8
1
1
1 5
1 7
3
4
4
8
9
1
2
GPM
+
A
R
C
-
+
D
I
U
S
F
L
W
O
A
D
J
l/mn
6
6
4
34
30
23
8
1
1
1 5
1 7
1
1
2
3
4
4
6
8
9
1
2
1
2
GPM
-
+
A
R
C
-
+
R
A
D
I
U
S
F
L
W
O
A
D
J
l/mn
+
–
1
2
TM
720G SPECIFICATIONS AND SERVICE INSTRUCTIONS
Specifications
• Pressure Range: 40–100 psi
• Optimum Pressure: 65 psi
• Arc Range: 40°–360° (Part Circle Models)
• Nozzle Trajectory: 7°–25°
• Inlet Size:
3
/4"
Sprinkler Performance (@ 65 psi & 25°trajectory)
Install Snap Ring
1. Place snap ring into body with beveled
side down.
CAUTION: Snap ring must be properly
installed in body groove and with gray
interlocking ring as shown to ensure
retention of sprinkler assembly.
2
Right Wrong
Install Rubber Cover
1. For part circle
sprinkler, align
arrow on cover with
alignment keys on
body as shown.
2. Push cover onto lip
of body to secure.
3
Disassembly
Reassembly
Remove Snap Ring
1. Insert Toro tool into snap ring slot until
gray interlocking ring beneath snap ring
is pressed down.
2. With twisting motion, disengage snap ring from body.
3. Twist snap ring out.
4. Remove sprinkler assembly
from body.
2
Remove Rubber Cover
1. Grasp lower edge of
rubber cover and pull
away from lip of body
as shown.
1
1
2
3
Install Sprinkler Assembly
1. To maintain left side arc
alignment of part circle
sprinkler, position alignment keys as shown.
2. Insert sprinkler assembly
into body.
1
Alignment Keys
6
4
34
30
23
8
1
1
1 5
1 7
1
1
2
3
4
4
6
8
9
1
2
1
2
GPM
-
+
A
R
C
-
+
R
A
D
I
U
S
F
L
W
O
A
D
J
l/mn
© 2001 The Toro Company • Irrigation Division Form Number 373-0159 Rev. A
*Note: Precipitation rates are calculated at 55%
of diameter for triangular (▲) spacing and 50% of
diameter for square (
■
)spacing.
Flow Adj. Pressure Radius Flow Precipitation Rate*
GPM PSI feet GPM ▲ in/hr ■in/hr
1 65 29 1.39 0.14 0.16
1.5 65 30 1.91 0.18 0.20
2 65 31 2.63 0.23 0.26
3 65 32 3.42 0.28 0.32
4 65 35 4.69 0.32 0.37
4.5 65 36 5.41 0.35 0.40
6 65 39 6.87 0.38 0.43
8 65 42 8.61 0.41 0.47
9 65 44 9.67 0.42 0.48
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