Page 1
JRCO Model 503/504 Broadcast Spreader settings for Commercial, Pelletized Fertilizers
Speeds greater than those listed on the above chart are
NOT
recommended.
Spreading at faster than recommended speeds may cause uneven application.
Distance
Time
Speed
To determine mower speed, set two markers 88 feet apart and record time it
takes to go from one to the other. See table below to determine speed.
MOWER
SPEED
2.5 lb. 3 lb. 4 lb. 5 lb. 6 lb.
2 mph 3 1/2 4 4 1/2 5 5 1/2 8 ft
3 4 4 1/2 5 5 1/2 6 8 ft
4 4 1/2 5 6 6 1/2 7 8 ft
5 5 5 1/2 6 1/2 7 8 8 ft
6 5 1/2 6 7 8 9 8 ft
2 4 5 5 1/2 6 6 1/2 12 ft
3 5 5 1/2 6 7 7 1/2 12 ft
4 5 1/2 6 7 8 9 12 ft
5 6 7 8 9 10 12 ft
6 7 8 9 10 12 12 ft
2 5 5 1/2 6 7 7 1/2 18 ft
3 6 6 1/2 7 8 9 18 ft
4 7 7 1/2 9 10 12 18 ft
5 8 8 1/2 10 13 15 18 ft
6 8 1/2 9 1/2 12 15 NA 18 ft
GATE SETTING
Pounds per 1000 sq. ft.
SPREAD
WIDTH
(SPEED
CONTROL
SETTING)
2 6 6 1/2 7 8 9 25 ft
3 7 7 9 11 13 25 ft
4 8 9 11 15 NA 25 ft
5 9 11 15 NA NA 25 ft
6 11 13 NA NA NA 25 ft
88 ft. 30 seconds 2 MPH
88 ft. 20 seconds 3 MPH
88 ft. 15 seconds 4 MPH
88 ft. 10 seconds 6 MPH
88 ft. 7.5 seconds 8 MPH
Page 2
JRCO Model 503/504 Broadcast Spreader settings for common Grass Seeds
6
3 1/2
5 1/2
81114NANANANANA8 ft
656
8 1/2
1114NANANANANA
8 ft
6
7 1/2
11NANANANANANANANA
15 ft
Speeds greater than those listed on the above chart are
NOT
recommended.
MOWER
SPEED
GATE SETTING WIDTH
Pounds per 1000 sq. ft.
1/2 lb. 1 lb. 2lb. 3 lb. 4 lb. 5 lb. 6 lb. 7 lb. 8 lb. 10 lb.
Athletic Blend 8' 2 mph 4 1/4 5 6 7 8 9 1/4 10 11 12 1/2 14 1/2 8 ft
(39% Tall Fescue, 30% 3 4 1/2 5 1/2 7 8 1/2 10 1/2 12 1/2 14 1/2 NA NA NA 8 ft
Perennial Ryegrass, 20% 4 5 6 8 10 12 1/2 14 1/2 NA NA NA NA 8 ft
Kentucky Bluegrass, 5 5 1/4 6 1/2 9 12 15 NA NA NA NA NA 8 ft
9.5% Chewing Fescue) 6 5 1/2 7 10 14 NA NA NA NA NA NA 8 ft
Athletic Blend 12' 2 4 1/2 5 1/4 6 7 8 8 3/4 9 1/2 10 1/2 12 13 1/2 12 ft
(39% Tall Fescue, 30% 3 4 3/4 5 1/2 6 3/4 8 9 1/4 10 1/2 12 13 1/2 14 1/2 NA 12 ft
Perennial Ryegrass, 20% 4 5 5 3/4 7 1/2 9 11 13 14 1/2 NA NA NA 12 ft
Kentucky Bluegrass, 5 5 1/4 6 8 1/2 10 1/2 13 15 NA NA NA NA 12 ft
9.5% Chewing Fescue) 6 5 1/2 6 1/2 9 1/4 12 1/4 14 1/2 NA NA NA NA NA 12 ft
Ryegrass 10' Wide 2 5 1/2 6 7 1/2 8 1/2 10 11 1/2 13 NA NA NA 10 ft
3 5 3/4 6 1/2 8 11 12 1/2 14 1/2 NA NA NA NA 10 ft
4 6 7 10 12 1/2 15 NA NA NA NA NA 10 ft
5 6 1/4 7 1/2 11 14 NA NA NA NA NA NA 10 ft
6 6 1/2 8 13 1/2 15 NA NA NA NA NA NA 10 ft
Ryegrass 14' Wide 2 5 5 1/2 6 1/2 7 1/4 8 1/2 10 11 12 1/2 14 NA 14 ft
3 5 1/4 6 7 1/2 8 1/2 10 1/2 12 1/2 14 15 NA NA 14 ft
4 5 1/2 6 1/2 8 10 1/2 13 15 NA NA NA NA 14 ft
5 5 3/4 7 9 1/2 12 1/2 15 NA NA NA NA NA 14 ft
6 6 7 1/2 10 1/2 14 NA NA NA NA NA NA 14 ft
DOT Blend 8' Wide 2 2 3 4 1/2 5 1/2 6 7 8 9 10 12 8 ft
(33.7% Brome, 28.7% 3 2 1/2 3 5 6 1/2 8 9 1/2 11 12 1/2 14 NA 8 ft
perennial ryegrass, 12% 4 2 3/4 4 6 8 10 12 14 15 NA NA 8 ft
switchgrass, 11% alfalfa, 5 3 4 1/2 7 9 1/2 12 14 1/2 NA NA NA NA 8 ft
11% timothy)
Kentucky Bluegrass 2 3 1/2 4 5 6 6 3/4 7 1/2 8 1/2 9 10 12 8 ft
8' 3 4 4 1/2 6 7 8 1/2 9 1/2 11 12 1/2 14 15 8 ft
4 4 1/2 5 6 1/2 8 1/2 10 12 14 15 NA NA 8 ft
5 4 3/4 5 1/2 7 1/2 9 1/2 12 14 NA NA NA NA 8 ft
White Dutch Clover 2 6 6 1/2 8 1/2 10 1/2 13 15 NA NA NA NA 15 ft
15' 3 6 1/4 7 1/2 10 14 NA NA NA NA NA NA 15 ft
4 6 1/2 8 1/2 12 1/2 NA NA NA NA NA NA NA 15 ft
5 7 9 14 NA NA NA NA NA NA NA 15 ft
Spreading at faster than recommended speeds may cause uneven application.
NA= Not applicable
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