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r4038 sprayer


  • 1,000 gal (3800L) tank
  • Direct injection product mixing option
  • Dry spinner compatibility increases versatility
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4 Series Sprayer operator station4 Series Sprayer operator station

When operators first enter the Command View III cab, they will notice that significant changes have been made. Key sprayer controls are more easily accessible to the operator on the redesigned CommandARM™ control panel and the multifunction handle has a more ergonomic fit and feel.

The multifunction handle has six reconfigurable buttons, a scroll to select speed range, and allows operators to better manage their headlands with the Headland Management System (HMS™) button. To finish out the upgrades, the GreenStar™ display has been upgraded to a faster, more user-friendly 4600 CommandCenter™ display, which allows operators to efficiently capture, manage, and transfer data.

Comfort continues to be enhanced by the ComfortCommand™ seat, which offers both fore-aft and lateral attenuation along with 15 degrees of right-hand seat swivel on all cab options. For first-class comfort, the premium cab offers a heated/ventilated leather seat and light-emitting diode (LED) cab lights.

The 4 Series Sprayers are JDLink™ telematics system capable, which enable features such as John Deere Wireless Data Transfer (WDT), Service ADVISOR™ Remote diagnostics, and Remote Display Access (RDA). These integrated solutions enable additional uptime and reduce cost of operation. All of the CommandView III cab features allow operators to run longer hours, increasing the ability to get more acres sprayed in a day.

Machine performance and operator comfort are requirements during long days of operation. The field-proven dual strut independent wheel air-ride suspension reduces overall machine maintenance. This suspension also provides a best-in-class ride, which is expected from John Deere Sprayers, even in the roughest fields.


Additionally, approximately 9 percent of the machine weight has been transferred to the front axle of the R4030, R4038, and R4044, which leads to improved balance and further increases machine maneuverability. These features lead to less operator adjustment in the field and on the road. At the end of the day, a smooth, stable ride allows the operator the ability to travel faster across the field and cover more acres, leading to increased productivity.

Make fewer passes through the field and reduce compaction, as well as time spent spraying, with John Deere booms.


All John Deere booms are more stable due to the swing link suspension, which helps translate rough areas in the field into horizontal (side-to-side) movement of the boom rather than lateral (up and down) movement. This additional stability means increased productivity as the boom now has the ability to more accurately maintain spray height above the crop, delivering a precise spray pattern. The swing link suspension also translates into uptime as the additional stability means less crop damage, resulting in less mechanical boom damage.


The enhanced design allows the boom to unfold and fold faster, getting the operators into the field quicker, and the flat fold design delivers superior transport visibility.

The John Deere 4 Series Sprayers have been designed to address the trend toward increased application rates and the desire for improved loading efficiencies. In fact, the R4030, R4038, and R4044 offer the most efficient liquid fertilizer application systems and the fastest loading times that John Deere has ever offered on this size of sprayers to date.


The solution system has been redesigned from the ground up to streamline plumbing for maximum efficiency and flow rate. The standard-flow system (standard solution pump and single flow meter) delivers 30 percent higher flow rates than previous models, up to 643.5 L/min (170 gpm) of output. The optional high-flow system offered on the R4038 and R4044 comes complete with a high-flow pump and dual-flow meters and delivers up to a 60 percent increase from previous models, equating to approximately 851.7 L/min (225 gpm) of output.


Additionally, load times using the on-board solution pump are up to 30 percent faster. This means operators can get back into the field sooner and spend less time filling. These improvements to the plumbing system all link to enhanced versatility and productivity for operators as they strive to increase the effectiveness of their application passes and drive towards increased yields year over year.

Solution Command offer push button loadingSolution Command offer push button loading
12-button keypad and micro-display12-button keypad and micro-display

4 Series Sprayers are available with the SCS and have been completely redesigned to allow quick and easy operation at the load station for all operator skill levels. The optional system allows complete automation at the load station with a 12-button keypad. The features include the following:

  • Fill station light on/off
  • Pump on/off
  • Agitation
  • Pump speed increase
  • Pump speed decrease
  • Eductor on/off
  • Master on/off
  • Automated rinse cycle
  • Visual nozzle check
  • Pull-on fill
  • Push-on fill
  • Target fill

The system also features a micro-display, providing real-time feedback on the system operations, as well as ability to select a rinse method and the ability to monitor progress during the automated rinse function. Overall, the enhanced Solution Command System increases operational performance by increasing ease of use through automation at the load station.

Field-installed 511-L (135-gal.) direct-injection systemField-installed 511-L (135-gal.) direct-injection system
Field-installed 889-L (235-gal.) direct-injection systemField-installed 889-L (235-gal.) direct-injection system

As solution tank mixes become more complex, operators need a better way to manage the products they are mixing in helping to reduce the risk of chemical residue. The integrated direct-injection system provides an additional carrying capacity for raw chemicals and allows injection of single, dual, or triple products directly into the boom depending on installed configuration.


MachineDirect injection
carrying capacity
Injection capability
model year 2015 and older
(serial number 10,999 and lower)
511 L (135 gal.)Inject up to two chemicals
(one high volume, one low volume)
model year 2016 and newer
(serial number 11,000 and higher)
889 L (235 gal.) Inject up to three chemicals
(two high volume, one low volume)
R4045889 L (235 gal.)Inject up to three chemicals
(two high volume, one low volume)

NOTE: Low-volume tanks and pumps must be configured with at least one high-volume tank and pump. High-volume tank and pump can be configured by itself.


Direct injection helps provide quicker changeovers and faster cleanouts while also helping to minimize the risk of using multiple chemicals. This is accomplished by allowing operators the ability to isolate higher-residual-risk chemicals in the injection system while mixing lower-risk chemicals in the solution tank.

The minimum and maximum application rates for each pump are as follows:


Direct injection pump systemHigh-rate pumpLow-rate pump
Application rate range
(minimum to maximum)
148-5900 mL/min (5-200 oz/min)29.6-1183 mL/min (1-40 oz/min)
Agitation capabilityNot available – suspension products not recommendedNot available – suspension products not recommended


NOTE: See Operator’s Manual for additional details based on boom size and speed range, and refer to Tools/Direct Inject Calculator within the ApplyPlus mobile app (download via Apple® App Store® or Google Play store).


Apple and App Store are trademarks of Apple Inc. Google Play is a trademark of Google LLC.

Turn compensation modeTurn compensation mode
Individual nozzle control modeIndividual nozzle control mode

John Deere’s intelligent nozzle control system ExactApply helps producers better manage drift and deliver a precise application. By maintaining target rate and pressure over a wider speed range, ExactApply can improve productivity up to 20 acres per hour*.


*NOTE: Assumes a 3.2-km/h (2-mph) average operating speed increase.


ExactApply is offered as a factory-installed option as well as a performance upgrade kit that can be added to existing 4 Series Sprayer models. 


How it works

The ExactApply system features multiple modes of operation including pulse-width modulation (PWM) and individual nozzle control:

  • 15-Hz PWM pulses one solenoid to achieve a consistent droplet size and maintain spray pressure throughout a wider range of speeds and application rates.
  • 30-Hz PWM (combined mode) pulses both solenoids in the ExactApply nozzle body at 15 Hz, providing superior coverage. Combined mode allows ExactApply to have a 25 percent increased flow over current competitive systems in the market.
  • AutoSelect A/B automatically switches between two nozzles to maintain the desired spray pressure range while spraying conventionally.
  • Turn compensation varies the rate across the boom, ensuring the desired application rate. The rate decreases on the inside of the turn to not subject crop to chemical burn, while the rate on the outside of boom increases, ensuring the crop receives the desired application rate.
  • Individual nozzle control minimizes overlap by controlling product application through individual nozzles. This reduces chemical cost and ensures the product is placed where it is needed most. In comparison, traditional nozzle control functions in 11 sections, meaning section widths vary from 2.4 to 3.35 m (8 to 11 ft), depending upon boom width.






Connect Mobile actual rate map and pressure map in split screen gives the operator deeper understanding of machine performanceConnect Mobile actual rate map and pressure map in split screen gives the operator deeper understanding of machine performance
Connect Mobile overview

John Deere Connect Mobile is a solution that utilizes an Apple® iPad® tablet in the cab that provides the operator a better understanding of the sprayer’s performance. Connect Mobile documents and displays several sprayer performance attributes, helping the operator monitor and more easily detect problems that can occur while spraying. Connect Mobile also has a common user interface that makes it easy to use between different pieces of John Deere equipment. Once the job is done, the iPad with the spraying data can be utilized to perform basic crop scouting activities in the field.

Spraying attributes

Monitor key performance indicators in map layers and dashboard tiles such as:

  • Actual rate
  • Rate deviation
  • Pressure
  • Ground speed
  • Droplet size
  • Target rate
  • Flow rate
  • Tank volume
  • Productivity
  • Fuel rate
In base equipment

Connect Mobile hardware is factory installed on all model year 2017 and newer R4030, R4038, R4044, R4045, and R4060 Sprayers, making it easy to get started with Connect Mobile.


Learn more about Connect Mobile in the Field and Crop Solutions section within the Precision Ag Technology product line and how it can improve the quality of a spraying job.


iPad and Apple are trademarks of Apple Inc.

Keep your machines working for you by converting them to dry nutrient applicators with the addition of a New Leader® DN456 Dry Spinner Spreader. This conversion can be completed in as little as 4 hours and involves the removal of the wet solution skid and the installation of the dry spinner spreader.


The DN456 features a carrying capacity of up 5.6 m3 (200 cu ft) or 6.6 tons of dry fertilizer (not approved for ag lime) and is capable of variable rate applications from 34 kg/ha (75 lb/acre) up to 3 ton/acre. The 1.83-m (72-in.) spinner heights allow spread width up to 32 m (105 ft) as it propels material across the pass. The New Leader G4 spinner technology provides a consistent spread pattern across the field for uniform pass to pass application.


The DN456 can be ordered with either 304 stainless-steel or 409 painted spreader material in single or dual product bin configurations with a #4 belt over chain conveyor.


New Leader is a registered trademark of Highway Equipment Company.


Compare the specifications of up to 4 models

Key Specs r4038-sprayer
Current Model
EnginePeak rated power
231 kW
310 hp
Solution system - Capacity3800 L
1000 gal.
Rinse tank capacity454.2 L
120 gal.
Boom length options/Material27.4, 30.4, 36.5, or 40 m
90, 100, 120, or 132 ft
Boom Material: Steel or carbon fiber
Spray speed range0 to 40.2 km/h
0 to 25 mph
Transport speed, maximum56.3 km/h
35 mph
Europe only - 40 km/h
24.9 mph
SuspensionDual-strut independent wheel air-ride suspension
Crop clearance with standard tires152 cm
60 in.
Total weight with widest boom13,805 kg
30,435 lb
Peak rated power231 kW
310 hp
EmissionsFinal Tier 4
Number of cylinders6
Displacement9 L
549 cu in.
Alternator200 amp
Fuel tank capacity605.7 L
155 gal.
Diesel exhaust fluid (DEF) tank capacity29.5 L
7.8 gal.
AutoTrac speed, maximum
Power bulge
Solution system
Capacity3800 L
1000 gal.
Tank materialStainless steel
Rinse tank capacity454.2 L
120 gal.
Quick fill size7.6 cm
3 in.
Rate control make
Automatic section controlJohn Deere Section Control (optional)
Solution system controlAutomatic (optional) or manual
Fill locationSide fill, front fill (optional)
Chemical injection methodDirect injection (optional)
Chemical eductorStainless steel
Chemical eductor capacity (size)32 L
8.5 gal.
Flow meter size5.1 cm
2 in.
Suction strainer20 mesh
Pressure strainer50 mesh
Boom strainer80 mesh
Fill pump flow
Solution pump flow
Boom length options27.4, 30.4, 36.5, or 40 m
90, 100, 120, or 132 ft
Automatic boom heightBoomTrac Pro - 5 sensor (optional)
Plumbing materialStainless steel (polyethylene optional)
Boom MaterialSteel or carbon fiber
Ground height adjustment50 to 245 cm
19.6 to 96.5 in.
Breakaway widthStainless-steel boom - 3.3 m
10.8 ft, in.
Carbon fiber boom - 3.7 m
12.1 ft
Boom sections13 sections with boom length - 40 m
132 ft
11 sections with boom length - 36.58 m
120 ft
9 sections with boom length - 30.48 m
100 ft
7 sections with boom length - 27.43 m
90 ft
ExactApply™ Nozzle Spacings15 or 20 in.
DriveFull-time four-wheel drive (4WD)
Hydraulic reservoir capacity98 L
26 gal.
Spray speed range0 to 40.2 km/h
0 to 25 mph
Transport speed, maximum56.3 km/h
35 mph
Europe only - 40 km/h
24.9 mph
Dry compatibleYes - 5.7 m3
200 cu ft
SuspensionDual-strut independent wheel air-ride suspension
Crop clearance with standard tires152 cm
60 in.
Front tires320/90 R46, 380/90 R46, or 420/80 R46
Rear tires320/90 R46, 380/90 R46, or 420/80 R46
Flotation tires520/85R38 or 620/70R38 (field installed only)
Hydraulic tread adjustStandard
Wheel tread spacing305 to 406 cm
120 to 160 in.
Wheel base430 cm
169.3 in.
Turning radius8.7 m
28.5 ft
Parking brakeSpring-engaged, hydraulic-disengaged wet disk pack
Primary brakesHydrostatic
Ladder raise/lowerAutomatic
Total weight with 80-ft boom
Total weight with 90-ft boom13,475 kg
29,707 lb
Total weight with 100-ft boom13,550 kg
29,873 lb
Total weight with 120-ft boom13,805 kg
30,435 lb
Total weight with carbon fiber boom36.6-m (120-ft) boom - 13,304 kg
29,330 lb
40.2-m (132-ft) boom - 13,359 kg
29,451 lb
Air compressorOnboard air (standard)
Foam marker capacityAir injection foamer - 5.7 L
1.5 gal.
Remote service tools
Pressure washer