John Deere 4066R
The John Deere 4066R is a tractor produced by John Deere. It is equipped with a 127.5 ci 2.1 L engine. The listed engine power is Diesel (gross): 65.0 hp / 48.5 kW. Transmission: eHydro. Operating weight: 1435 lbs 650 kg.
Engine Power
Diesel (gross): 65.0 hp / 48.5 kW
Fuel & Capacities
13 gal
49.2 L
Transmission
eHydro
Operating Weight
1435 lbs
650 kg
Overview
 | 2014 -
4R SeriesCompact Utility tractor |
|---|---|
2014 - | |
4R Series | |
Compact Utility tractor | |
Production | |
|---|---|
Manufacturer | John Deere |
Compact Utility tractor | |
Built in Augusta, Georgia, USA | |
Original price | $51,662 (2025 hydro ROPS ) |
$62,984 (2025 hydro Cab ) | |
Variants | |
|---|---|
4066M | base model |
4066R | deluxe model |
John Deere 4066R Engine | |
|---|---|
Yanmar 2.1L 4-cyl diesel | |
Engine details ...  |
John Deere 4066R Power | |
|---|---|
Engine (gross) | 65.0 hp
48.5 kW |
Gear PTO (claimed) | 54.2 hp*Sales brochure lists 58 hp.
40.4 kW |
Hydro PTO (claimed) | 51.9 hp*Sales brochure lists 57 hp.
38.7 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Final drives | planetary |
Differential lock | mechanical rear |
Power steering | |
Hydraulic wet disc brakes | |
Two-post folding ROPS. Cab optional with air-conditioning. | |
Capacity | |
|---|---|
ROPS Fuel | 13 gal
49.2 L |
Cab Fuel | 13.8 gal
52.2 L |
Hydraulic system | 12.5 gal
47.3 L |
Hydraulics | |
|---|---|
Type | open center |
Capacity | 12.5 gal
47.3 L |
Pressure | 2500 psi
172.4 bar |
Valves | 3 to 5 |
Pump flow | 10.2 gpm
38.6 lpm |
Total flow | 15.9 gpm
60.2 lpm |
Steering flow | 5.7 gpm
21.6 lpm |
Tractor hitch | |
|---|---|
Rear Type | I |
Control | position control |
Rear lift (at ends) | 3130 lbs
1419 kg |
Rear lift (at 24"/610mm) | 2500 lbs
1134 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 (1.375) |
Engine RPM | 540@2600 |
540E@1750 | |
Dimensions & Tires | |
|---|---|
Wheelbase | 73 inches
185 cm |
Weight | 3770 to 4675 pounds |
Front tire | 8.00-16 |
Rear tire | 13.6-28 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 75 |
Battery CCA | 770 |
Battery volts | 12 |
References | |
|---|---|
 | |
4 Family published in 2015, by John Deere | |
4 Family published in 2017, by John Deere | |
4 Series published in 2020, by John Deere | |
4 Series published in 2023, by John Deere | |
Operator's Manual 4 Series (OMTR11452) published in 2019* | |
Operator's Manual 4 Series (OMTR130411) published in 2023* | |
Compact Utility Tractors published in 2016, by John Deere | |
*Publication contains known errors. |
Engine
Engine Detail — 127.5 ci / 2.1 L Diesel
Manufacturer | Yanmar 4TNV86 |
Configuration | turbocharged diesel, 4-cylinder, liquid-cooled inline |
Displacement | 127.5 ci
2.1 L |
Bore/Stroke | 3.39x3.54 inches
86 x 90 mm |
Emissions | Tier IV |
Emission control | diesel particulate filter (DPF) |
Rated Power (gross) | 65.0 hp
48.5 kW |
Fuel system | high-pressure common rail |
Compression | 19.1:1 |
Rated RPM | 2600 |
Idle RPM | 950-2750 |
Torque | 153 lb-ft
207.5 Nm |
Torque RPM | 1690 |
Starter | electric |
Starter volts | 12 |
Oil capacity | 5.6 qts
5.3 L |
John Deere 4066R Engine | |
|---|---|
 | |
Image courtesy of Jeff Zuress |
Transmission
Transmission options | |
|---|---|
12-speed power shuttle | |
hydrostatic |
Transmission — PowrReverser
Transmission | PowrReverser |
Type | power shuttle |
Gears | 12 forward and reverse |
Clutch | wet disc |
 | |
Transmission — eHydro
Transmission | eHydro |
Type | hydrostatic |
Gears | infinite forward and reverse (3-range) |
 | |
Dimensions
John Deere 4066R Tires | |
|---|---|
Ag front | 8.00-16 |
Ag rear | 13.6-28 |
Lawn/turf front | 27x10.50-15 |
Lawn/turf rear | 44x18-20 |
Dimensions | |
|---|---|
Wheelbase | 73 inches
185 cm |
Length | 130.6 inches
331 cm |
Height (ROPS) | 100.2 inches
254 cm |
Height (cab) | 97.4 inches
247 cm |
4WD ROPS Weight | 3770 lbs
1710 kg |
4WD Cab Weight | 4675 lbs
2120 kg |
Clearance (front axle) | 13.8 inches
35 cm |
Front tread | 53.6 inches
136 cm |
Rear tread | 59.9 inches
152 cm |
Attachments
Attachment overview | |
|---|---|
John Deere D170 loader | |
John Deere H180 loader | |
John Deere 440R loader | |
Backhoe |
John Deere 485A Backhoe | |
|---|---|
Backhoe type | John Deere 485A Backhoe |
Weight | 1435 lbs
650 kg |
Transport height | 92 inches
233 cm |
Bucket width | 16 inches
40 cm |
2-Foot flat digging depth | 102 inches
259 cm |
Reach from pivot | 140 inches
355 cm |
Loading height | 79 inches
200 cm |
Bucket Rotation | 180° |
Swing Arc | 170° |
Bucket force | 3752 lbs
1701 kg |
Dipperstick force | 2449 lbs
1110 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for John Deere 4066R based on its 65 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 7 to 8 ft (84-96 in)2.1 - 2.4 m | Heavy Duty | Heavy-duty twin spindle cutter for overgrown acreage. |
Rotary TillerSeedbed Prep | 78 to 84 in200 - 215 cm | Heavy Duty | Heavy commercial tiller with multi-speed gearbox. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | 4x4 to 4x5 Round Baler1.2x1.5 m 紧凑圆捆机 | Heavy Duty | Silage and dry hay; 540 RPM PTO with slip-clutch. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere 4066R.
Estimated Continuous Field Runtime: 3.8 hrs
Approximately 3.8 hours of continuous field operation at ~75% rated power on a full tank (13 gal / 49.2 L).
Estimated 75% Load Fuel Burn~3.4 gal/hr (12.8 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
John Deere 4066R Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for John Deere 4066R.
Converted Equivalents:
Horsepower (HP)65 hp
Kilowatts (kW)48.5 kW
Metric Horsepower (PS / CV)65.9 PS
Direct Competitor Comparison
Compare John Deere 4066R against same-era industry alternatives in the same horsepower class.
Current Model
John Deere
John Deere 4066R
Engine Power:Diesel (gross): 65.0 hp / 48.5 kW
★ Baseline Reference
Related models
John Deere 2330
- Power:
- 52.5
- Production years:
- 1975 - 1980
John Deere 2010C
- Power:
- 52.7
- Production years:
- 1960 - 1965
John Deere 1120
- Power:
- 53
- Production years:
- 1967 - 1975
John Deere 5210
- Power:
- 53
- Production years:
- 1998 - 2001
John Deere 5220
- Power:
- 53
- Production years:
- 2001 - 2004