Standard Arc and Full Circle Adjustment
The arc adjustment band is marked for 1/4, 1/2, 3/4
and full-circle settings.
1. Squeeze the ribbed area of the arc adjustment
band (see
Figure 11
), then rotate the band
to align the desired indicator with the arrow
indicator on the side of the nozzle turret (directly
below the back nozzle). See
Figure 12
.
Main Nozzle Trajectory Adjustment
Main nozzle spray trajectory can be easily adjusted
up or down to help compensate for difficult watering
conditions, such as mounded turf or low overhead
obstructions.
The default trajectory setting is 25°. The 855RB
sprinkler series has an adjustment range of 7° to 30°,
and is accessed through the top of the cap, either
wet or dry. The DT55/54RB series sprinklers provide a
15° or 25° trajectory angle, and are adjusted dry with
the sprinkler cap removed.
Note:
Spray radius will decrease proportionally when
decreasing the trajectory angle.
For DT55/54RB series:
A #2 Phillips screwdriver and
a 5/8” nut driver (p/n 995-83) are required for this
procedure.
1. Remove the cap screw and cap.
2. Rotate the main nozzle assembly clockwise to
orient the indicator tab to the 15° or 25° trajectory
position as shown in
Figure 13
.
3. Reinstall the cap.
For 855RB series:
A 5/16” nut driver (p/n 995-105) is
required for this procedure .
1. Turn the trajectory adjustor left to increase, or
right to decrease angle. See
Figure 13
.
Main Nozzle Diffusion Adjustment (optional)
A 3/32” hex driver (P/N 995-82) is required for this
procedure.
1. Move the diffusion screw from its storage position
next to the cap screw, to the pilot hole in front of
the main nozzle.
2. With the sprinkler operating, adjust the screw
depth for the preferred amount of spray diffusion.
Caution:
The diffusion screw can be lost in the nozzle
stream if over-adjusted.
Cap Marker Installation
The lavender-color cap insert (provided), or optional
yardage markers are easily installed in place of the blank
insert. A small slotted screwdriver and diagonal cutters
are required for this procedure.
1. Insert the screwdriver tip under the inside edge of
the blank cap and pry upward to remove..
2. Press the inserts into place, flush with the cap.
3. Trim off the two outer insert tabs, flush with the
bottom of the cap.
Figure 12
25°
30°
Figure 13
855RB
1/4
3/4
1/2
Full
15°
7°
855RB
Figure 14
Figure 15
855RB Series
855RB Series
DT54/55RB
Diffusion
Screw
3/32” Hex Driver
(#995-82)
Relocate
Diffusion
Screw
Trim Outer
Tabs Flush
DT54/55RB
