John Deere

John Deere 4120

The John Deere 4120 is a compact utility tractor produced from 2004 to 2014 as part of the 4000 Twenty Compact Series. It features a 2.4L 4-cylinder turbocharged diesel engine producing 43.1 hp, with options for 12-speed PowrReverser or hydrostatic eHydro transmissions. The tractor includes four-wheel drive, hydrostatic power steering, and ROPS for safety. It has a fuel capacity of 14.5 gallons and an open center hydraulic system with 10.3 gallons capacity. The 4120 supports a rear PTO of 540 rpm and an optional mid PTO. Dimensions include a 71.5 inch wheelbase, 128.2 inch length, and a weight of 3700 lbs. Attachments include a 72" mid-mount mower deck, loaders (400X and 400CX), and a John Deere 485 backhoe, making it versatile for various tasks.
Power43 hp
Founded2004 - 2014
Model4120

Technical Specifications

Detailed specifications and technical data for John Deere 4120

Power
Engine power43.1 hp (32.1 kW)
PTO (claimed)35 hp (26.1 kW)
Engine
ModelJohn Deere 2.4L 4-cyl diesel
Power43.1 hp (32.1 kW)
Detailsturbocharged diesel, 4-cylinder, liquid-cooled
Rated RPM2400
Bore/Stroke3.386x4.134 inches (86 x 105 mm)
Compression20:1
Displacement148.9 ci (2.4 L)
Oil capacity7.9 qts (7.5 L)
Starter power2.9 hp (2.2 kW)
Starter volts12
Coolant capacity6.4 qts (6.1 L)
Capacity
Fuel14.5 gal (54.9 L)
Hydraulic system10.3 gal (39.0 L), 9.6 gal (eHydro) (36.3 L)
Electrical
Groundnegative
Battery CCA770
Battery volts12
Charging amps75
Charging systemalternator
Hydraulics
Typeopen center
Capacity10.3 gal (39.0 L), 9.6 gal (eHydro) (36.3 L)
Pressure2500 psi (172.4 bar)
Pump flow12 gpm (45.4 lpm)
Total flow17.1 gpm (64.7 lpm)
Steering flow5.1 gpm (19.3 lpm)
Mechanical
ROPSYes
DriveFour-wheel drive
Steeringhydrostatic power
Production
TypeCompact Utility tractor
Series4000 Twenty Compact Series
Built inAugusta, Georgia, USA
Years produced2004 - 2014
Attachments
Overview72" mid-mount mower deck, John Deere 400X loader, John Deere 400CX loader, Backhoe
400X Loader2346 lbs lift (full at pin) (1064 kg), 1720 lbs lift (full at 500mm) (780 kg), 2701 lbs lift (1.5m at pin) (1225 kg), 2154 lbs lift (1.5m at 500mm) (977 kg), 3453 lbs breakout (at pin) (1566 kg), 2606 lbs breakout (at 500mm) (1182 kg), 3289 lbs breakout (bucket) (1491 kg), 46° dump, 24.4 inches reach (dumped) (61 cm), 64.3 inches reach (ground) (163 cm), 32° rollback (ground line), 117° rollback (raised), 112.8 inches height (at pin) (286 cm), 89.5 inches clearance (dumped) (227 cm), 104.8 inches clearance (level) (266 cm), weight 927 lbs (420 kg), Bucket width 61 inches (154 cm), Bucket width 73 inches (185 cm)
400CX Loader2368 lbs lift (full at pin) (1074 kg), 1742 lbs lift (full at 500mm) (790 kg), 2734 lbs lift (1.5m at pin) (1240 kg), 2181 lbs lift (1.5m at 500mm) (989 kg), 3435 lbs breakout (at pin) (1558 kg), 3055 lbs breakout (at 500mm) (1385 kg), 4638 lbs breakout (bucket) (2103 kg), 45° dump, 24.8 inches reach (dumped) (62 cm), 64.7 inches reach (ground) (164 cm), 43° rollback (ground line), 43° rollback (raised), 112.8 inches height (at pin) (286 cm), 89.7 inches clearance (dumped) (227 cm), 104.8 inches clearance (level) (266 cm), weight 1100 lbs (498 kg), Bucket width 61 inches (154 cm), Bucket width 73 inches (185 cm)
72" Mower deckmid-mount John Deere, 3-blade with hydraulic lift, Cutting width 72 inches (182 cm), Weight 448 lbs (203 kg), Overall width 85 inches (215 cm), Cut height 1 to 9.6 inch (2 to 24 cm)
John Deere 485 BackhoeWeight 1460 lbs (662 kg), Transport height 90 inches (228 cm), Digging depth 105 inches (266 cm), Reach from pivot 142 inches (360 cm), Loading height 88 inches (223 cm), Bucket Rotation 180°, Swing Arc 180°, Bucket force 3730 lbs (1691 kg), Dipperstick force 2435 lbs (1104 kg)
Transmission
TypesPowrReverser, eHydro
Options12-speed, hydrostatic
eHydro typehydrostatic
eHydro gearsinfinite forward and reverse
PowrReverser gears12 forward and reverse
eHydro oil capacity38.4 qts (36.3 L)
PowrReverser oil capacity41.2 qts (39.0 L)
Tractor hitch
Rear TypeI
Rear lift (at ends)3,130 lbs (1419 kg)
Rear lift (at 24"/610mm)2,500 lbs (1134 kg)
Dimensions & Tires
Width65.6 inches (R1 tires) (166 cm)
Length128.2 inches (325 cm)
Weight3700 lbs (1678 kg)
Rear tire13.6-28
Wheelbase71.5 inches (181 cm)
Front tire8.00-16
Max Drawbar1,103 lbs (500 kg)
Height (ROPS)97.2 inches (246 cm)
Height (hood)62 inches (157 cm)
Power Take-off (PTO)
Mid PTOindependent (optional)
Rear PTOindependent
Mid PTO Type2100
Rear PTO Type540