User manual | 7&#39

180 Lake Ave North
Paynesville, MN 56362
Phone: 1-800-864-1649
www.master-mfg.com
MASTER
MANUFACTURING
UTV SPRAYER
UTO-21-060A-MM
Aug 2012
Note: Do not return product to the distributor/dealer for warranty work. Call Master Manufacturing at (800)
864-1649 for any warranty work or replacement parts.
ASSEMBLY
Sprayer assembly has been competed at the factory accept for the roller pump that must be supplied by the
customer. This unit is designed to work with a 4 or 6 roller pump that will be attached directly to the tractor
PTO. Depending on pump choice the spray nozzles may need to be changed to deliver optimum spray
coverage. Please refer to the “Boom Operation” section for more information.
Two nylon hose fittings and hose clamps have been provided to join to the pump. Use a good quality thread
sealant on each fitting to prevent leaks. After the fittings have been inserted to the pump, push on the two pump
hoses to the fittings and secure with the clamps provided.
OPERATION
Check the inside of the tank for any foreign objects or material that could cause damage to the pump.
Fill the tank with clean water. It is always better to have the tank at least half full of water before adding the
chemical to avoid possible damage to the sprayer components by an undiluted chemical concentrate.
Before initially running the sprayer, loosen the tee handle of the relief valve. This adjustment should be
checked while spraying because a pressure increase will be noted when the sprayer is shut off and the output of
the pump is by-passed back to the tank through the relief valve.
Limit the pressure to 150 psi. If, when adjusting the relief valve for more pressure, no increase in pressure
occurs, it is an indication that the maximum output of the pump is being used. When the sprayer is shut off the
pump will have to overcome the excessive tightness of the relief valve in order to by-pass back to the tank. This
will cause pump strain and possible damage and should be avoided.
Choose an operating pressure that provides a spray pattern suitable for the particular operation. Follow the
chemical manufacturer’s recommendations for mixing and rates of application carefully. Judge the area
sprayed tank full of spray material carefully to avoid over or under application rates. Do not use your sprayer
for pumping petroleum products, strong acids, paint or other thick materials with heavy viscosity.
General Sprayer Maintenance
Most spray materials are highly corrosive. The most important aspect of long dependable service from the
sprayer is a thorough cleaning immediately following each use. In addition, the residue of one type of chemical
could cause an undesirable effect when a different chemical is used for a different purpose.
The most effective cleaning method is to pump several rinses of clean water through the tank, pump, hose and
spray gun. A neutralizing agent such as a solution of Nutra-Sol, detergent or household ammonia as
recommended by the chemical manufacturer can assist in removal of a persistent chemical. Avoid getting
chemical on the engine and other external parts of the unit in order to preserve the finish. Remove external
spray material deposits when cleaning and flushing unit. A coat of wax applied to the exterior will protect the
paint and make clean up easier.
When the unit is thoroughly cleaned, remove the tank filter bowl and drain the water from the tank, spray gun,
pump boom and spray gun hose.
Troubleshooting
In the event of inefficient operation or malfunction, check the following:
1. Clean the line strainer after each use or more often, if necessary. A plugged strainer will restrict the
flow of liquid to the pump and cause it to perform poorly. Always use clean water and keep the
strainer screen in place. Sandy or gritty liquids will damage the components of the pump.
2. Check the hoses for any kings or leaks. Be sure that suction hose is not collapsed or plugged.
3. Nozzle tips should be removed and cleaned with a toothpick or similar object. Avoid nails, wires,
etc., that could damage the top opening. The nozzle screens of the boom accessory should also be
removed and cleaned periodically. Inspect and replace worn tips to insure satisfactory spraying
performance
Storage
This sprayer should always be cleaned and drained before storage. If the unit will be subjected to freezing
temperatures, it is imperative that the whole sprayer; pump, hoses, spray gun, gauge, etc., be completely drained
and dry. Any water left in the system could cause extensive damage when it freezes. Follow the
recommendations of the pump instructions for preventing internal pump corrosion and protection against the
rotor and rollers gumming and sticking during storage.
Boom Operation
The spray nozzles used in the boom are marked with the capacity in gallon per minute of water at a pressure of
40 psi. A 3 tip has a capacity of .3 gpm at 40 psi. A 5 has a capacity of .5 gpm at 40 psi. etc.
The spray width coverage of the nozzle will vary according to the pressure, and nozzle height. The wide angle
flat spray pattern increases as the pressure is increased.
The amount of material applied by the nozzle is changed by variations in spraying speed, different capacity
nozzles, different nozzle spray width and spraying pressures. Other factors such as a heavier or lighter (specific
gravity) spraying solution, a change in the chemical-water concentration ratio, worn tip, a worn pump, wheel
slippage, a pressure drop from the gauge to the boom, and a pressure gauge variation or malfunction can also
cause variations in the rate of application. Uneven coverage can result from a clogged nozzle and a straining
screen.
The spraying pressure is usually more in relation to the type of application and the type of tip used than to the
rate of application. Since nozzle flow rate is almost proportional to the square root of pressure, it would take
four times the amount of range from 10 to 40 psi. The rate of application can be changed somewhat by
changing pressure but a considerable change is achieved by using a different capacity nozzle or (if possible) by
changing the spraying ground speed.
Dividing the spraying width of the boom in feet into 1000 determines the travel distance required to cover 1000
sq. ft. For example, an 80” spray width will cover 1000 sq. ft. in 150 ft. of travel. Periodic calibration checks at
the spraying speed and pressure assure correct application rates. The number of gallons required to refill the
tank after spraying (starting with a full tank) over a test distance is the application rate for the area of the test
distance.
Multiplying the application rate for the 1000 sq. ft. by 43.56 will determine the application rate per acre or
dividing the rate per acre by 43.56 will determine the rate per 10000 sq. ft. If unknown, spraying speed can be
determined by measuring the distance travelled in one minute. Every 88 ft. of travel is equal to 1 mph of speed.
For instance, a distance of 308 ft. in one minute divided by 88 equals 3.5 mph.
A calibration check can also be made with the unit standing still and the boom spraying at the operation RPM
and pressure. Catching the output of the one nozzle for the time it would take to travel the test distance and
multiplying by the number of nozzles on the boom will yield the application rate. Water weighs 8.34 lbs. per
gallon. Spraying solutions heavier than water will cause a reduction in nozzle output, while solutions lighter
than water will increase the nozzle output.
Gallons per Acre, 40" spacing
Nozzle part #
PSI
Flow GPM
4 mph
5 mph
6 mph
7 mph
8 mph
9 mph
10 mph
DF2.0
Red colored
nozzle
15
20
30
40
60
0.24
0.28
0.35
0.4
0.49
8.9
10.4
13.0
14.9
18.2
7.1
8.3
10.4
11.9
14.6
5.9
6.9
8.7
9.9
12.1
5.1
5.9
7.4
8.5
10.4
4.5
5.2
6.5
7.4
9.1
4.0
4.6
5.8
6.6
8.1
3.6
4.2
5.2
5.9
7.3
DF2.5
Brown colored
nozzle
15
20
30
40
60
0.31
0.35
0.43
0.5
0.61
11.5
13.0
16.0
18.6
22.6
9.2
10.4
12.8
14.9
18.1
7.7
8.7
10.6
12.4
15.1
6.6
7.4
9.1
10.6
12.9
5.8
6.5
8.0
9.3
11.3
5.1
5.8
7.1
8.3
10.1
4.6
5.2
6.4
7.4
9.1
DF3.0
Gray colored
nozzle
15
20
30
40
60
0.37
0.42
0.52
0.6
0.73
13.7
15.6
19.3
22.3
27.1
11.0
12.5
15.4
17.8
21.7
9.2
10.4
12.9
14.9
18.1
7.8
8.9
11.0
12.7
15.5
6.9
7.8
9.7
11.1
13.6
6.1
6.9
8.6
9.9
12.0
5.5
6.2
7.7
8.9
10.8
Note: All GPA calculations above are per nozzle.
WARRANTY PARTS SERVICE
Products sold shall be warranted from defects in workmanship and material when used within the service and
scope for which they were designed for a period of one year from date of purchase. Warranty covers
replacement parts ONLY. Contact Master Manufacturing for warranty parts at (800) 864-1649. Do not return
product to your distributor/dealer. Please have your original sales receipt or other proof of purchase date when
requesting any warranty parts. To ensure the correct parts are acquired always provide the model number of
your sprayer/attachment and the part number and description obtained from the illustrated parts breakdown in
this manual.

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