99
Test Results
After navigating the course, shut the spreader down and park in a secure location�
Using the funnel, transfer the contents of each collection tray into its corresponding test tube beginning
at one end of the trays and working towards the opposite end�
If spreading a blend of materials, inspect all tubes to determine if the blend is consistent across the entire
swath width� If the blend is not consistent, use a narrower swath width� The swath width should be based
on the material thrown the shortest distance�
Record each test tube’s volume in the box on the data sheet under the corresponding tray position and
graph the spread pattern profile. See Figure 4.
313964-A
Temperature:
°F
lbs/acre
Spinner Speed:
RPM
Controller Vehicle Speed:
MPH
Controller Swath Width:
10’
15’
20’
25’
30’
35’
40’
45’
50’
55’
-0-
10’
15’
20’
25’
30’
35’
40’
45’
50’
55’
1
2
3
4
5
6
7
1
2
3
4
5
6
7
60’
60’
3.5
3.0
3.0
3.03.0
3.0
3.0
2.5
2.5
2.5 2.5 2.5 1.50.5
2.5 2.5
2.0
1.5
0.5
Figure 4
Looking at the material in the test tubes and the graphed profile on the data sheet, compare the overall
shape of the spread pattern to the three acceptable patterns, shown in Figure 5� If an acceptable pattern
has not been achieved, proceed to “Troubleshooting”� Once an acceptable pattern has been achieved,
proceed to “Determining Driving Centers”�
FLAT TOP
OVAL
PYRAMID
RA
TE/A
CRE
RA
TE/A
CRE
RA
TE/A
CRE
Figure 5 – Acceptable Patterns
Spread Pattern
L4000G4
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307074-AA-I
