Fimco LG-40-4-3PT User manual

Page 1
Model: LG-40-4-3PT (5302941)
(40 Gallon, 12 Volt, Bolt-Together, 3 Point Sprayer w/4-Nozzle Boom)
www.fimcoindustries.com
1000 FIMCO Lane, P.O. Box 1700, North Sioux City, SD 57049
Toll Free Phone: [phone] : Toll Free Fax: [phone]
[5195133 (02/19)]
Assembly Instructions
 The sprayer is partially assembled.
 Follow the steps on pages 2 & 3 to properly assemble
the sprayer.
 After assembly is complete and before testing your
sprayer, make sure you connect the electrical hook-up to
the end of your pump and clip the clips to a fully charged
battery. The red wire must be connected to the positive
(+) and the black wire should be connected to the nega-
tive (-).
 The drain plug assembly should already be attached to
the tank
Category I
Technical Specifications
 40 Gal. Corrosion-Resistant Polyethylene Tank
 12 Volt Diaphragm Pump, 2.4 GPM - 60 PSI
 Deluxe Pistol Grip Handgun
 25 Ft. Handgun Hose (3/8” I.D.)
 25 Ft. Vertical throw, 35 Ft. Horizontal Throw
 Pressure Gauge
 Bypass (Recirculation) Line
 Bolt-Together Frame
 4-Nozzle Boom Assembly, 120” Spray Coverage
 Corrosion-Resistant Nylon Nozzles
 Check Valve Strainers, 50 Mesh, 5 PSI
CAUTION: When fully filled with water,
this sprayer will weigh approx. 430 Lbs.
Always check the vehicle load rating
before using this sprayer. Do not
exceed the recommended rating.
OWNER’S MANUAL
BEFORE RETURNING THIS PRODUCT
FOR ANY REASON, PLEASE CALL
1-800-831-0027
MONDAY-FRIDAY, 8:00 AM TO 5:00 PM CST
If you should have a question or experience a problem with
your Fimco Industries Product: Visit our website @
www.fimcoindustries.com or call the Toll free number above. Our
technical support representatives will be happy to help you.
In most cases a customer service rep. can resolve
the problem over the phone.
To obtain prompt, efficient service, always remember to give the
following information....
• Correct Part Description and/or part number
• Model number and Serial Number
Part descriptions and numbers can be obtained from the
illustrated parts list section(s) of this manual.
General Information
Thank you for purchasing this product. The purpose of this
manual is to assist you in operating and maintaining your
3-Point sprayer.
Retain a copy of your receipt for your
unit, as it will be required to validate
any warranty service.
Warranted against manufacturer or
workmanship defects from date of
purchase with copy of receipt:
Homeowner Usage: Sprayer-One Year and Pump-Two Years.
Commercial Usage: Sprayer and Pump-90 Days.

Page 2
Step 2
Bolt the frame together as shown.
Attach RH side plate to the front frame weldment us-
ing (3) 5/16"-18 x 3/4" Flange Whiz Lock Screw and
(3) 5/16"-18 Hex Whiz Nut.
Attach back tie plate to RH side plate using (2) 5/16"-
18 x 3/4" Flange Whiz Lock Screw and (2) 5/16"-18
Hex Whiz Nut.
Repeat procedure for LH side plate.
Attach Boom Support Bars using (2 each) 5/16"-18 x
3/4" Flange Whiz Lock Screws and (2 each) 5/16"-18
Hex Whiz
Step 3
** After positioning the tank on the assembled frame,
bolt it down to the side members with the supplied (4)
5/16” x 5/8” flange lock screws. These 4 screws will go
through the frame and up into the (4) ‘threaded inserts’
in the bottom of the tank.
***DO NOT OVERTIGHTEN***
Assembly Instructions: LG-40-4-3PT (5302941)
Step 1
Install the lower hitch pins into the tabs of the front
frame weldment. Place these pins through the holes in
the tabs, slip the lock washers on and thread the nuts
onto the pin. Tighten securely.
Step 4
Next, attach the tank straps over the tank and secure
them in place using (2 each) 5/16"-18 x 1" Flange Hex
Bolts and (2 each) 5/16"-18 Hex Whiz Nuts.

Page 3
Assembly Instructions: LG-40-4-3PT (5302941)
Step 5
Next, attach the center boom member of the
4-nozzle boom to the boom support bars, centering
it on the unit, using the (2) U-Bolts and (4) 5/16”-18
Hex Whiz Nuts.
Make sure the outer boom members fold
‘backwards’.
Step 7
After your nozzle harness is attached to the boom, attach the
boom feeder hose. Place (2) hose clamps loosely onto each
end of the hose, loosely. Slip the ends of the hose over the
hose barbs on both the manifold and the poly tee fitting on the
nozzle harness. Use a twisting motion, if necessary to get the
hose fully onto each barb. Bring the hose clamps to the con-
nection point and tighten securely.
Thread the pressure gauge into the manifold. Hand tight should
be sufficient.
Finally, thread the lid onto the tank.
***The Sprayer should now be ready for use***
With the boom secured to the boom support bars, the nozzle
harness can now be attached.
Center the nozzle harness to the boom and using the nozzle
clamps, attach the nozzle harness to the boom.
Step 6

Page 4
IMPORTANT: Remove tank lid and be sure the tank is clean and free of
any foreign material. Rinse tank out of any tank residue before filling with
water to test.
Testing the Sprayer
NOTE:
It is VERY important for you to test your sprayer with plain water before actual
spraying is attempted. This will enable you to check the sprayer for leaks without
the possibility of losing any expensive chemicals.
Attach the unit to the tractor’s 3-point hitch. Connect the lead wire .
Fill the tank about 1/2 full with plain water and drive to the starting place for spraying.
When you are ready to spray, turn the boom valve to the “on” position (Detail A). This will start
solution spraying from the tips of the boom. The pressure will decrease slightly when the boom
is spraying.
Adjust the pressure by turning the “ON/OFF” valve lever on the bypass line valve (Detail B).
Make sure your pattern is sufficient. You may down-pressure the system by ‘bypassing’ solu-
tion back into the tank. This is achieved by opening the bypass valve. Regulating pressure is
done in this manner.
Read the operating instructions and initially begin spraying by closing the ‘Pressure Adjust’
valve and opening the boom line valve (Detail A). This will enable the air in the line to be elimi-
nated (purged) through all the tips, while building pressure. When everything tests all right (no
leaks and good pressure), add the desired chemicals to the mixture and water combination
and start your spraying operation. Adjust the pressure and spray as you did in the testing pro-
cedure.
Conditions of weather and terrain must be considered when setting the sprayer. Do not spray
on windy days. Protective clothing must be worn in some cases.
Be sure to read the chemical label(s) before application!
Operation
The pumping system draws solution from the tank, through the strainer and to the pump. The
pump forces the solution under pressure to the handgun or boom nozzles.
Connect the lead wire to a fully charged 12 volt battery. You may use either a stand-alone
battery or the battery on your towing vehicle. Connect to the positive (red) terminal first, then
connect to the negative (black) terminal. Then connect the end of the lead wire to the end of
the pump. When disconnecting, disconnect the end of the pump wire from the lead wire, then
disconnect the negative (black) connection and finally the positive (red) connection. The lead
wire has an On/Off switch to activate the pump. “-” is on and “O” is off.
Fill the tank part way with water and then add the desired amount of chemical to be sprayed.
Finish filling tank to proper level. Turn the pump on and by depressing the “-” side of the rocker
switch. The pump is equipped with a pressure switch that is pre-set at the factory to shut the
pump off when all discharges are closed.
The pump will turn back on when one of the following actions occurs:
 Handgun lever is squeezed to spray the handgun.
 Boom valve is opened to broadcast spray with the boom.
 Bypass valve is opened to re-circulate solution back into the tank.
When spraying with either the boom or the handgun, pressure may be reduced by slowly opening the bypass valve until desired pressure is achieved.
Opening the valve decreases pressure, closing the valve increases pressure. When spraying with the boom, the proper method to set the pressure is
to open the boom valve completely and if a lower pressure is desired, then slowly open the bypass valve until that pressure is obtained.
For the safest and most efficient chemical application, you will need to calibrate your sprayer using the tip and speed charts. Once you have deter-
mined the proper speed and pressure settings, you will need to consult your chemical label for the amount of chemical to be added to the tank. Read
the entire label. Use only according to label directions.
Calibration
Chemical labels may show application rates in gallons per acre, gallons per 1000 square feet or gallons per 100 square feet. You will note that the tip
chart shows 2 of these rating systems. Once you know how much you are going to spray, then determine (from the tip chart) the spraying pressure
(PSI), and the spraying speed (MPH).
Determining the proper speed of the pulling vehicle can be done by marking off 100, 200 & 300 feet. The speed chart indicates the number of seconds
it takes to travel the distances. Set the throttle and with a running start, travel the distances. Adjust the throttle until you travel the distances in the num-
ber of seconds indicated by the speed chart. Once you have reached the throttle setting needed, mark the throttle location so you can stop and go
again, returning to the same speed.
Add water and proper amount of chemical to the tank and drive to the starting place for spraying.
Detail A
Detail B
Manifold Valves CLOSED

Page 5
Speed Chart
Time Required in seconds to travel a distance of
Speed in M.P.H.
(Miles Per Hour) 100 Ft. 200 Ft. 300 Ft.
1.0 68 sec. 136 sec. 205 sec.
2.0 34 68 102
3.0 23 45 68
4.0 17 34 51
5.0 14 27 41
6.0 11 23 34
7.0 9.7 19 29
8.0 8.5 17 26
9.0 7.6 15 23
10.0 6.8 14 20
Spray Tip Rate Chart (30" Spacing)
Tip
No.
Pressure
(psi)
Capacity
(GPM)
Gallons Per Acre - Based on Water
1
MPH
2
MPH
3
MPH
4
MPH
5
MPH
6
MPH
AIXR11002VP
15 .12 23.50 11.70 7.80 5.90 4.70 3.90
20 .14 27.50 13.70 9.10 6.90 5.50 4.60
30 .17 33.30 16.60 11.10 8.30 6.70 5.50
40 .20 39.30 19.70 13.10 9.80 7.90 6.50
Spray Tip Rate Chart (30" Spacing)
Tip
No.
Pressure
(psi)
Capacity
(GPM)
Gallons Per 1000 Sq. Ft. - Based on Water
1
MPH
2
MPH
3
MPH
4
MPH
5
MPH
AIXR11002VP
15 .12 .54 .27 .18 .13 .11
20 .14 .64 .32 .21 .16 .13
30 .17 .76 .38 .26 .19 .15
40 .20 .90 .45 .30 .22 .18
Using the Boom Nozzles
Four things must be considered before spraying with the boom.
 How much chemical must be mixed in the tank.
 Rate of spray (gallons per acre to be sprayed).
 What pressure (p.s.i.) will be used.
 Speed traveled (mph) while spraying.
 Refer to the chemical label to determine your chemical mixture
 See the tip chart to determine the pressure to be used. The chart will also show the speed used when spraying.
 Start the pump and open the valve to the boom nozzles.
 Check the spray pattern. Usually you can see the coverage better on a solid concrete surface, such as a driveway.
Maintenance During/After Spraying
Periodically check the strainer and clean the screen on your intake line.
Proper care and maintenance will prolong the life of your sprayer.
After use, drain the tank and store or dispose of chemical properly. Fill the sprayer half way with clean water. Start the pump and allow the water to
pump through the entire plumbing system and nozzles. Drain and then refill half full, add the recommended amount of a good quality tank cleaner,
such as FIMCO Tank Neutralizer and Cleaner. (If no tank cleaner is available, you may substitute dish soap for this step, about 1-2 oz. per gallon).
Turn pump on and circulate through system for 15 minutes and then spray out through boom and handgun nozzles. Refill sprayer half way with clean
water and repeat. Follow the chemical manufacturer’s disposal instructions of all wash or rinsing water.
If boom or handgun nozzles need cleaning, remove them from the sprayer and soak in warm soapy water. Clean with a soft bristled brush or toothpick
if necessary. Never use a metal object. Even the slightest damage can change the flow rate and spray distribution. Water rinse and dry the tips before
storing.
WARNING: Some chemicals will damage the pump valves if allowed to soak untreated for a length of time! ALWAYS flush the pump as
instructed after each use. DO NOT allow chemicals to sit in the pump for extended times of idleness. Follow the chemical manufacturer’s
instructions on disposal of all waste water from the sprayer.
Winter Storage
Prepare the sprayer for end-of-season storage by running
RV antifreeze through the system. This will keep internal
parts lubricated, protect against corrosion and keep the unit
from freezing. Note: RV antifreeze is non-toxic and biode-
gradable and generally safer for the environment than auto-
motive antifreeze.
Before storing your sprayer for winter or long term storage,
thoroughly clean and drain it as much as possible. Then
pour enough pink RV antifreeze into the tank so that when
the pump is turned on you can pump the antifreeze
throughout the entire plumbing system, including the by-
pass. Make sure to operate the boom and handgun until
you see pink fluid spraying from the nozzles. Leave any
remaining antifreeze in the tank. Before your next usage,
rinse the antifreeze from the sprayer with clean water.
It is nearly impossible to drain all of the water from the
sprayer and any trapped water can freeze in cold weather
and damage parts of the sprayer. Pumping the antifreeze
Try another 12-Volt battery
Quarter turn at a time clockwise until surging stops
Defective pressure switch
Troubleshooting
Bypass is not completely closed
System has leaks
Check for worn or dirty check valve
Excessive voltage
Improper adjustment of pressure switch
Damaged or defective wiring harness
Check for proper voltage
Check for worn or dirty check valve
Low flow may cause pump to surge
Spray wand is adjusted for a small or fine spray pattern
Slightly open bypass (if applicable) to overcome
If needed, pressure switch may need to be adjusted
Pump will not run:
Low Pressure/Low Flow:
Pump surges:
Pump continues to run:
Fuse blows:
Check for loose wiring
Make sure the ON/OFF switch is on
Check the fuse
Check for defective pressure switch
Check for a clogged strainer

Page 6
DO
 Clean and rinse your pump after each use with Fimco Tank
Neutralizer
 Winterize your pump or sprayer by rinsing, draining and
running RV Antifreeze through it before storing for the winter.
 Use clean water for your spray mixture
 Store inside a building when not in use.
DON’T
 Use to pump bleach.
 Use to pump petroleum products such as diesel fuel,
gasoline or kerosene
 Leave your pump sit with spray mixture in it for extended
periods
 Use dirty or unfiltered water for spraying
Troubleshooting the Pump:
Motor does not run:
 Check for loose wiring connection(s).
 Make sure the 'ON/OFF' switch in the lead wire assembly
is in the 'ON' position. "I" is the 'ON' position and 'O' is
the 'OFF' position.
 Check for defective pressure switch. Make sure you are
connected to a good 12 volt power source. Make sure
any on/off switches are in the 'on' position. Remove the
cap to the pressure switch. Pull both red wires off of their
terminals, and touch the two ends together. If your pump
runs when you do this, your pressure switch will need to
be replaced.
 Check the fuse.
 Check for low voltage at the power supply.
Pump does not prime:
 Check for air leaks in supply line.
 Check for debris in the check valve assembly.
 Check for defective check valve.
 Check for clogged strainer/filter.
 Check for cracks in the pump housing.
 Check for empty product supply.
Low Pressure/Low Flow:
 Check for leaks in the discharge line.
 Check for restriction in the discharge line.
 Check for debris in nozzle orifice.
 Check for clogged strainer.
 Check for proper voltage—try another 12-volt battery.
Pulsating flow (surging):
 Low flow may cause pump to surge.
 Spray wand is adjusted for a small or fine spray pattern.
 Slightly open bypass (if applicable) to overcome.
 If needed, pressure switch may need to be adjusted—
adjust a quarter turn at a time clockwise until surging
stops.
 Check for defective pressure switch.
 Check for leaks in the discharge line.
 Check for restriction in the discharge line.
 Check for debris in nozzle orifice.
 Discharge hose may be too long.
 Check for clogged strainer.
Motor continues to run after discharge is shut off:
 Check for empty product supply.
 Check for open bypass valve. (if equipped)
 Check for low voltage.
 Check for leak in discharge line.
 Check for defective pressure switch.
 System has leaks.
Fuse blows:
 Excessive voltage.
 Improper adjustment of pressure switch.
 Damaged or defective wiring harness.
 Half-moon & counterweight are sticking.
 Defective pressure switch.
Replacement Pump: 5151087
Includes:
1/2” MNPT Port Kit Fitting
#5168832
1/2” Hose Barb Port Kit Fitting
#5168833
3/8” Hose Barb Port Kit Fitting
#5168836
Pump Model: 5281371
2.4 GPM, 60 PSI
Available Replacement Parts

Page 7
Bolt Bag
(5280968)
Part Bag (5277425)
Cleaning the Check Valve:
If you’re experiencing little to no pressure or the pump is not priming and you’ve
checked your filter screen and it’s clean, and you’ve gone through the other
trouble shooting tips, you may need to clean the check valve.
 Remove the head of the pump, which is held on by 7 screws.
 The first piece inside the head of the pump is called a check valve, it’s the
part responsible for building up pressure and pumping water/solution
through the lines.
 Clean the check valve under hot, soapy water (such as a good grade dish
soap).
 Give it a very light scrubbing with something like an old toothbrush, something with soft bristles.
 Then let it soak for about an hour or so in the hot soapy solution and replace in the pump and reassemble the
pump.
Most times this will restore most, if not all of the prime of a pump.
If you’re still having issues with pressure after this step, it would be recommended to replace this part.
Checking the Pressure Switch:
If your motor is not running and you’ve checked the following: for loose wiring connections, fuse,
the switch on the lead wire was “ON” and made sure you were connected to a fully charged bat-
tery and everything is fine, but the motor won’t run, then it’s time to check to see if the pressure
switch is bad.
 Remove the cover off the 1” square box (pressure switch) on the head of the pump, the
cover is held on by one phillips-head screw. This will expose the two red wires.
 With the pump connected to a good 12 volt power source and everything on.
 Slip the two red wires off the terminals and touch them together.
If the motor runs, it means the pressure switch is bad and needs to be replaced.
If it still doesn’t run, try bypassing the switch in the lead wire or using another lead wire. Even if a
tester shows power to the pressure switch, it still could be the switch in the wire that is causing
the problem. If still not responsive, use a voltmeter or electrical tester to make sure you are get-
ting power to the head of the pump, as it could possibly be something in one of the wires or even
the lead wire assembly may need to be replaced.
Warning: It is NOT recommended to run the pump this way, as the pump will continue to run and
not shut off.
This could result in blown hoses when all discharges are closed.
Also, this could result in premature failure of the pump completely.

Page 8
Exploded View/Parts List:
LG-40-4-3PT (5302941)
NOTE:
Bolt frame together as shown,
With the proper hardware.
See Assembly Instructions
earlier in this manual for
boom mounting.

Page 9
Opposite side has typical hardware setup
4-Nozzle Boom Assembly (5302290)
(with 3/8” Hose, 1” Sq. Tubing & AIXR11002VP Tips)
Tee Elbow
Clamp
Bag of 4: 5277728
Hinge Detail
Based on the minimum overlap required to obtain uniform
distribuon with 110° ps and 30” spacing.
Suggested Minimum Spray Height: 20”-22” above what is
being sprayed (to plant, not ground).
Opmum Spray Height: 20”
 110° wide, tapered flat spray angle with air induction tech-
nology for better drift management
 Made of 2-piece UHMWPE polymer construction which
provides excellent chemical resistance, including acids, as
well as exceptional wear life
 Compact size to prevent tip damage
 Excellent for systemic products and drift management

Page 10
LIMITED WARRANTY FOR NEW FIMCO, IND. EQUIPMENT
WHO MAY USE THIS LIMITED WARRANTY. This limited warranty (the “Limited Warranty”) is provided by Fimco, Ind. to the original purchaser
(“you”) of the Equipment (as dened below) from Fimco, Ind. or one of Fimco, Ind.’s authorized dealers. This Limited Warranty does not apply to
any subsequent owner or other transferee of the Equipment. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO
HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.
WHAT THIS LIMITED WARRANTY COVERS AND FOR HOW LONG. Fimco, Ind. warrants that any new Equipment will be free from defects in
material and workmanship for a period of one (1) year for sprayer and two (2) years for High-Flo High Performance pump (homeowner), 90 days
for sprayer and pump (commercial user), aer delivery of the Equipment to you (the “Warranty Period”). The Warranty Period is not extended if
Fimco, Ind. repairs or replaces the Equipment.
WHAT IS NOT COVERED BY THIS LIMITED WARRANTY. This Limited Warranty does not apply to: (1) used Equipment; (2) any Equipment that has
been altered, changed, repaired or treated since its delivery to you, other than by Fimco, Ind. or its authorized dealers; (3) damage or deprecia-
on due to normal wear and tear; (4) defects or damage due to failure to follow Fimco, Ind.’s operator’s manual, specicaons or other wrien
instrucons, or improper storage, operaon, maintenance, applicaon or installaon of parts; (5) defects or damage due to misuse, accident or
neglect, “acts of God” or other events beyond Fimco, Ind.’s reasonable control; (6) accessories, aachments, tools or parts that were not manu-
factured by Fimco, Ind., whether or not sold or operated with the Equipment; or (7) rubber parts, such as res, hoses and grommets.
HOW TO OBTAIN WARRANTY SERVICE. To obtain warranty service under this Limited Warranty, you must (1) provide wrien noce to Fimco,
Ind. of the defect during the Warranty Period and within thirty (30) days aer the defect becomes apparent or the repair becomes necessary, at
the following address: Fimco, Ind., 1000 Fimco Lane, North Sioux City, SD 57049; and (2) make the Equipment available to Fimco, Ind. or an
authorized dealer within a reasonable period of me. For more informaon about this Limited Warranty, please call: 800-831-0027.
WHAT REMEDIES ARE AVAILABLE UNDER THIS LIMITED WARRANTY. If the condions set forth above are fullled and the Equipment or any part
thereof is found to be defecve, Fimco, Ind. shall, at its own cost, and at its opon, either repair or replace the defecve Equipment or part.
Fimco, Ind. will pay for shipping and handling fees to return the repaired or replacement Equipment or part to you.
LIMITATION OF IMPLIED WARRANTIES AND OTHER REMEDIES. THE REMEDIES DESCRIBED ABOVE ARE YOUR SOLE AND EXCLUSIVE REMEDIES,
AND FIMCO, IND.’S SOLE LIABILITY, FOR ANY BREACH OF THIS LIMITED WARRANTY. TO THE EXTENT APPLICABLE, ANY IMPLIED WARRANTIES,
INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL BE LIM-
ITED IN DURATION TO THE WARRANTY PERIOD, AND THE REMEDIES AVAILABLE FOR BREACH THEREOF SHALL BE LIMITED TO THE REMEDIES
AVAILABLE UNDER THIS EXPRESS LIMITED WARRANTY. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY
LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. IN NO EVENT SHALL FIMCO, IND.’S LIABILITY UNDER THIS LIMITED WARRANTY EX-
CEED THE ACTUAL AMOUNT PAID BY YOU FOR THE DEFECTIVE EQUIPMENT, NOR SHALL FIMCO, IND. BE LIABLE, UNDER ANY CIRCUMSTANCES,
FOR ANY CONSEQUENTIAL, INCIDENTAL, SPECIAL OR PUNITIVE DAMAGES OR LOSSES, WHETHER DIRECT OR INDIRECT. SOME STATES DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT
APPLY TO YOU.
Warranty