John Deere 4066R Compact Utility Tractor

  • Turbocharged diesel engine
  • PowrReverser™ or eHydrostatic Transmission Options
  • Cab or Open Station configurations
  • Premium features: Hitch Assist, Aux Hitch Control, HST controls


+ Attractive styling provides improved visibility and serviceability

+ Powerful Yanmar® diesel engine delivers plenty of power under heavy loads

+ PowrReverser™ transmission allows for clutchless direction changes

+ Maximize productivity with an eHydro™ transmission

+ Operator station is comfortable and convenient

+ Optional premium ComfortGard™ cab provides superior comfort and performance

+ Built-in safety features for operator peace of mind

+ Hitch assist, auxiliary 3-point hitch control, and optional iMatch™ Quick-Hitch for easy implement hookup

+ Save fuel, reduce noise, and increase engine life with the economy power take-off (PTO)

+ Excellent serviceability reduces operational costs and improves productivity


Engine model4TNV86CHT-MJT
Engine power (gross)48.5 kW
65.9 hp
PS at 2600 rpm
SAE J1995 rated power
Power take-off (PTO) powerGear - 40.2 kW
54 hp
Hydrostatic transmission (HST) - 38.7 kW
52 hp
Per SAE J1995
Rated engine speed2600 rpm
Injection pump typeHigh pressure common rail direct injection
AspirationTurbocharged and charge air cooled
Emissions complianceFinal Tier 4
Cylinders/displacement4 / 2.091 L
4 / 127.6 cu in.
Number of cylindersFour
Cylinder linersCast-in-block
Bore and stroke86 x 90 mm
3.4 x 3.54 in.
Compression ratio19.1:1
Cooling systemLiquid
Air cleanerDual element with electronic restriction indicator
Engine torque at rated speed178 Nm
131.3 lb-ft
Fuel tank capacityRollover protective structure (ROPS) - 49.2 L
13 U.S. gal.
Cab - 52.2 L
13.8 U.S. gal.


Battery size770 CCA
Alternator (12-V)75 amp
Starter size2 kW
2.68 hp

Fuel system

TypeHigh pressure common rail direct injection
Fuel consumption


Standard transmission; forward/reverse12/12 PowrReverser transmission (PRT)
Optional transmission; forward/reverse3/3 Hydrostatic transmission (HST)
Left-hand reverserYes
Transmission gear ranges
Final drivePlanetary
BrakesMulti-plate wet disc
SteeringHydrostatic power steering
Clutch, wet/dryWet
Clutch disk diameter wet clutch129 mm
5.08 in.
Axle capacityFront
1600 kg
3528 lb
2400 kg
5292 lb
Mechanical front-wheel drive (MFWD) - 1.6 kg
5.9 lb
Cruise controlStandard
Differential lockYes
Drawbar maximum vertical load


TypeOpen center
Pump rated outputSteering
21.5 L/min
5.7 gpm
38.7 L/min
10.2 gpm
60.2 L/min
15.9 gpm
Pump typeDual gear
Maximum operating pressure
Draft control sensingPosition control
Remote control valves availableThree remotes optional

3-point hitch

CategoryCategory 1
Lift capacity, 24-in. behind link arms1135 kg
2500 lb

Power take-off (PTO)

StandardRear - 540 at 2600 rpm
Optional540 rpm
540E rpm
ClutchWet disc
Brake (for mid and rear PTO)
Engagement method

Fluid capacities

Crankcase with filter5.3 L
1.4 qt
Transmission and hydraulic system44 L
12 gal.

Final drive

Differential lockYes

Operator station

Rollover protective structureType
Platform - flat/straddleFlat
Gear shift location - console/floorLeft-hand side


ComplianceOSHA, SAE, ASAE
Visibility360 degree (angle)
Air conditioning, temperature differential16.7 °C
30 °F
Noise rating78 dBA
Seat equipmentAir


Wheelbase185.5 cm
73 in.
Front axle clearance39.5 cm
15.6 in.
Turning radius with brakes2.8 m
9.19 ft
Turning radius without brakes3.0 m
9.84 ft
Limited slip differential
Approximate shipping weight (open-station; cab)Open operator station (OOS) - 1710 kg
3770 lb
Cab - 2120 kg
4675 lb


FrontFarm - 8-16
Turf - 27x10.5-15
R4 - 10-16.5
RearFarm - 14.9-24
Turf - 44x18-20 or 22.5LL-16.1
R4 - 17.5Lx24
Front tread range148.1 cm
58.3 in.
Rear tread spacing137.2 cm
54 in.


Tilt steering wheel
12-V Outlet

Additional information

Date collected