Earthway F80 Commercial Adaptable Broadcast Spreader - Manual (Page 8)

Using the EV-N-SPRED
®
Dual Port PRO Adjustable
Shut-Off System
- Included with Optional F13130D Kit Tray
The EV-N-SPRED
®
Dual Port PRO Adjustable Shut-Off System is
included on all Professional models and allows the operator
to balance the spread pattern evenly across the full 180 o
spread width, regardless of the weight or size of granular
material. By closing either the right and or left side
throwing ports you can balance the spread pattern to
exacting precision without compromising spread width or
application rate.
Each EV-N-SPRED
® Dual Port PRO Adjustable
Shut-Off System drop hole has a corresponding 1/3 rd
coverage area on the spread width of the spreader leaving a
feathered-edge for overlapping the spread path. The illustration to
the right shows each port and the corresponding 1/3 rd coverage
area of the spread path. These ports can be adjusted to effectively
balance the spread pattern, giving equal amounts of material
across the full 180 o spread pattern.
EV-N-SPRED
®
Dual Port PRO System Setup
Test all material prior to beginning your spreading job. You will need
a 50’ measuring tape, a small scale to weigh the material, bucket or
container to hold the material for re-weighing, chalk or a line marking
device, and (7) low baking tins. Using the EarthWay® Bag Calibrator
#77016 can greatly reduce the time needed for
determining the Setting Rates on any material but
is not mandatory to establish a setting rate.
1. Evaluate the material being spread by comparing
it to the following standard as a reference.
Large/Heavy is the size of a BB (⅛ in / 3mm), spread width is 28 - 36 feet (8.5 -
11 meters)
Medium/Mixed (½ the size of a BB), spread width is 20 - 24 feet (6.1 - 7.3 meters)
Small/Fine (the size of sand), spread width is 16 - 18 feet (4.8 - 5.5 meters)
2. Add a small amount of the material into the spreader, enough to cover
the bottom (2-3 in / 5 - 7 cm) and begin to test for spread width. Set the
stop on the gauge to #15 and push the spreader several feet /meters at
normal walking speed on a flat hard surface (where the material will be
visible), and OPEN the lever to the STOP while continuing to walk for 3-4
paces, and CLOSE the shut-off and STOP (don’t move the spreader from
that position). Measure the spread width and evaluate the spread pattern
for even distribution on either side of the spread width center line. TIP:
Typical spread width references are listed above. The spread width that
you measure is used to calculate the actual Setting Rate for the material.
Sp
rea
d Patte
rn
Adjustable Throwing Ports
with 8 repeatable settings
to balance the left or right
spread pattern to
the center.
Sp
rea
d Patte
rn
SPREAD WIDTH
Gauge & Lever
15 FINE MEDIUM LARGE