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 setting intended to
be used as only references.
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 manufac-
tures of
fertilizer
make the granules different
sizes it is impossible for spreader manufactures
to give guidelines for all of the different fertiliz-
ers. In addition to this walking speed and ter-
rain, may vary, therefore settings may need to
be adjusted. Because of these conditions, Preci-
sion Product Inc. makes no warranty as to the
uniformity of coverage actually obtained from
any of these calculations.
CALCULATING COVERAGE AREA
Length
W
id
th
11
13
3
1. Move Handle into upright position, hand tighten Wing Nuts.
Figure 1
Handle
Wing Nut
