PATTERN ADJUSTMENT
Normal spreading of materials
requires no adjustment (factory
setting “A”) unless stated on the
package. In those cases where the
spread pattern has shifted, the
pattern can be adjusted left and
right by loosening the two knobs on
the discharge chute and moving the
chute closer or farther away from
the impeller. Settings of “A, B, and
C” are provided as reference.
Knob
Discharge
Chute
Impeller
Knob
Discharge Chute
Settings
HOW TO DETERMINE SPREADER
SETTINGS AND SPREAD WIDTH
EFFECTIVE PATTERN WIDTH
A simple visual pattern test can be made by
operating spreader over a non-turf area and
evaluating the pattern. A more accurate method
is to place a row of common, disposable, alu-
minun cake tins approximately 30 cm on
centres. Set the rate plate at a middle setting and
make 3 or 4 passes in the same direction as shown.
Pour the material collected from each
pan into individual bottles of the same size. Set
them side by side in order, and visually inspect
their volume. If the pattern is not centered
(example: volume in bottle #2 left not equal to
bottle #2 right) adjust the pattern control as
described in the
“PATTERN ADJUSTMENT”
section.
Once the pattern is uniform, the effective pattern
width can be determined. The effective pattern
width is the distance out from the spreader to a
point where the amount of material is 1/2 the
average amount in the center pans. This dis-
tance is multiplied by 2 to achieve the total
effective pattern width.
Space 1’-0” on Centres
Space for Wheel Track
Two major factors should be considered when determining correct spreader settings of any
product:
1. The product application rate, or the amount of material applied per 500 square meters.
2. The effective pattern width, or the actual width in which the material is applied. Label settings are a
guide and can be effected by numerous factors.
The Trojan HVO is factory calibrated. However, calibration should be checked occasionally to assure
optimum performance.
For accurate calibration Sherriff Amenity recommends the use of the Prizelawn® calibrator for the
Trojan HVO, Trojan 30+, and the Trojan Tow. For all other spreaders standard calibration procedures
should be followed. Visit www.sherriff-amenity.com for further
information.
Summary of Contents for 30 +
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