6
Calculating Your Flow Setting
To calculate how many pounds of material to spread
per 1000 square feet of lawn. Follow these steps.
1. Read on your material bag how many square feet
of area the contents of the bag will cover and how
many pounds the bag weighs.
Example:
You have purchased a bag of fertilizer that states
that it will cover 5,000 square feet, and weighs
16.0 pounds.
2. To calculate coverage divide bag weight by
suggested coverage to obtain pounds per square
foot that is needed to be applied.
Example:
16.0 lbs.
÷
5,000 sq. ft. = .0032 lbs./sq. ft.
3. To calculate how much you need for 1000 sq. ft.
multiply the pounds per square foot obtained
above by 1000.
Example:
.0032 lbs/sq. ft. x 1000 = 3.2 lbs./1000 sq. ft.
4. Refer to standard settings table and locate the
appropriate settings number.
Example:
3.2 lbs./1000 sq. ft is closest to a 3 lbs./1000 sq. ft
so the spreader setting is a 5.
These are general information settings, intended to
be used as references only.
STANDARD SETTINGS
Fertilizer
Setting
Lbs. per 1000 sq. ft.
Broadcast Spreaders
2.5
4
3.0
5
3.5
5.5
4.0
6
Grass Seed
Setting
Blue Grass
3
Bent Grass
3
Fine Mixture
10
Coarse Seed
10
Insecticide
Setting
(Diazinion)
3.5
_____________________Length
X_____________________Width
=_____________________Total sq. ft.
-______________________Non-Lawn Area
House, drive etc.
=_____________________Total sq. ft.
Coverage
Caution
On the bag of fertilizer there should be a chart
that gives the recommended settings for that
particular bag. Because different manufactures
of fertilizer make the granules different sizes, it
is impossible for spreader manufactures to give
guidelines for all of the different fertilizers. In
addition to this walking speed and terrain, may
vary. Therefore, settings may need adjustment.
Because of these conditions, Precision Product
Inc. makes no warranty as to the uniformity of
coverage actually obtained using any of these
calculations.
CALCULATING COVERAGE AREA
Length
W
id
th
3
Figure 1
1. Lift Handle into an upright position. Tighten both Wings Nuts (hand tighten only). Lubricate all
moving parts, you are now ready to use your new spreader.
Wing Nuts
Handle
