John Deere 4066R: all source data
All 88 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | John Deere |
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| (no label) | Compact Utility tractor |
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| (no label) | Built in Augusta, Georgia, USA |
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| Original price | $51,662 (2025 hydro ROPS) |
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| Original price | $62,984 (2025 hydro Cab) |
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| Original price | $54,245 (2026 hydro ROPS) |
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| Original price | $65,850 (20265 hydro Cab) |
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Engine| (no label) | Yanmar 2.1L 4-cyl diesel |
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Transmission| (no label) | 12-speed power shuttle |
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| (no label) | hydrostatic |
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Power| Engine (gross) | 65.0 hp | 48.5 kW |
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| Gear PTO (claimed) | 54.2 hp | 40.4 kW |
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| Hydro PTO (claimed) | 51.9 hp | 38.7 kW |
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Mechanical| (no label) | Four-wheel drive |
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| Final drives | planetary |
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| Differential lock | mechanical rear |
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| (no label) | Power steering |
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| (no label) | Hydraulic wet disc brakes |
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| (no label) | Two-post folding ROPS. Cab optional with air-conditioning. |
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Capacity| ROPS Fuel (ROPS) | 13 gal | 49.2 L |
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| Cab Fuel (Cab) | 13.8 gal | 52.2 L |
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| Hydraulic system | 12.5 gal | 47.3 L |
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Hydraulics| Type | open center |
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| Capacity | 12.5 gal | 47.3 L |
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| Pressure | 2500 psi | 172.4 bar |
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| Valves | 3 to 5 |
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| Pump flow | 10.2 gpm | 38.6 lpm |
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| Total flow | 15.9 gpm | 60.2 lpm |
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| Steering flow | 5.7 gpm | 21.6 lpm |
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Hitch| Rear Type | I |
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| Control | position control |
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| Rear lift (at ends) | 3130 lbs | 1419 kg |
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| Rear lift (at 24"/610mm) | 2500 lbs | 1134 kg |
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Pto| Rear PTO | independent |
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| Rear PTO Type | 540 (1.375) |
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| Engine RPM | 540@2600 |
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| Engine RPM | 540E@1750 |
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Dimensions| Wheelbase | 73 inches | 185 cm |
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| Weight | 3770 to 4675 pounds |
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| Front tire | 8.00-16 |
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| Rear tire | 13.6-28 |
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Serial location| (no label) | Serial number plate on the right side of the 4066R tractor frame, above the front axle. |
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Electrical| Ground | negative |
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| Charging system | alternator |
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| Charging amps | 75 |
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| Battery CCA | 770 |
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| Battery volts | 12 |
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Engine
Engine detail| (no label) | Yanmar 4TNV86 |
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| (no label) | turbocharged diesel |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled inline |
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| Displacement | 127.5 ci | 2.1 L |
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| Bore/Stroke | 3.39x3.54 inches | 86 x 90 mm |
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| Emissions | Tier IV |
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| Emission control | diesel particulate filter (DPF) |
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| Rated Power (gross) | 65.0 hp | 48.5 kW |
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| Fuel system | high-pressure common rail |
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| Compression | 19.1:1 |
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| Rated RPM | 2600 |
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| Idle RPM | 950-2750 |
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| Torque | 153 lb-ft | 207.5 Nm |
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| Torque RPM | 1690 |
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| Starter | electric |
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| Starter volts | 12 |
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| Oil capacity | 5.6 qts | 5.3 L |
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Engine| (no label) | Image courtesy of Jeff Zuress |
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Transmission
Transmission options| (no label) | 12-speed power shuttle |
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| (no label) | hydrostatic |
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Transmission| Transmission | PowrReverser |
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| Type | power shuttle |
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| Gears | 12 forward and reverse |
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| Clutch | wet disc |
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| Transmission | eHydro |
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| Type | hydrostatic |
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| Gears | infinite forward and reverse (3-range) |
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Dimensions
Tires| Ag front | 8.00-16 |
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| Ag rear | 13.6-28 |
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| Lawn/turf front | 27x10.50-15 |
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| Lawn/turf rear | 44x18-20 |
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Dimensions| Wheelbase | 73 inches | 185 cm |
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| Length | 130.6 inches | 331 cm |
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| Height (ROPS) | 100.2 inches | 254 cm |
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| Height (cab) | 97.4 inches | 247 cm |
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| 4WD ROPS Weight (4WD ROPS) | 3770 lbs | 1710 kg |
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| 4WD Cab Weight (4WD Cab) | 4675 lbs | 2120 kg |
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| Clearance (front axle) | 13.8 inches | 35 cm |
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| Front tread | 53.6 inches | 136 cm |
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| Rear tread | 59.9 inches | 152 cm |
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