Brand siblingUtilityPerformance profile
John Deere 3120
The John Deere 3120 is a utility tractor built for versatility and efficiency. It features a 4x4 MFWD chassis with power steering, making it easy to handle in various conditions. The tractor is powered by a Yanmar 3TNV84 diesel engine with three cylinders and natural induction. This engine produces 29.5 hp at 2600 rpm, which is average for its class. The tractor uses a hydrostatic transmission with infinite forward and reverse gears in three ranges, giving operators smooth control over speed and direction. This compact tractor measures 120.1 inches long, 52.4 inches wide, and 92.9 inches tall. It weighs 2,998 lb, which is on the lighter side for utility tractors. The John Deere 3120 comes with an open operator station and a two-post ROPS for safety. It has a Category I hitch and an independent PTO with two speeds: 2100 rpm at the middle PTO and 540 rpm at the rear PTO. The tractor uses an open center hydraulic system and is equipped with wet disc brakes for reliable stopping power. Built in Augusta, Georgia, USA, this John Deere model combines American engineering with practical features for everyday farm tasks.
ManufacturerJohn DeerePower29.5 hpEngine3-cylTransHydrostatic
Image not recorded
Quick specs
- Category
- Utility
- Engine Power Output
- 30hp
- Operating Weight
- 2,998 lb
- Transmission
- Hydrostatic
At a glance
How the 3120 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
29.5 hp · 21st
This model
9
Median 55 hp
177
This modelUtility tractorsMediann = 5,383
The 3120 ranks at the 21st percentile for engine power among recorded utility tractors.
Overview
About the John Deere 3120
The John Deere 3120 is a utility tractor built for versatility and efficiency. It features a 4x4 MFWD chassis with power steering, making it easy to handle in various conditions. The tractor is powered by a Yanmar 3TNV84 diesel engine with three cylinders and natural induction. This engine produces 29.5 hp at 2600 rpm, which is average for its class. The tractor uses a hydrostatic transmission with infinite forward and reverse gears in three ranges, giving operators smooth control over speed and direction. This compact tractor measures 120.1 inches long, 52.4 inches wide, and 92.9 inches tall. It weighs 2,998 lb, which is on the lighter side for utility tractors. The John Deere 3120 comes with an open operator station and a two-post ROPS for safety. It has a Category I hitch and an independent PTO with two speeds: 2100 rpm at the middle PTO and 540 rpm at the rear PTO. The tractor uses an open center hydraulic system and is equipped with wet disc brakes for reliable stopping power. Built in Augusta, Georgia, USA, this John Deere model combines American engineering with practical features for everyday farm tasks.
Full specifications
Every recorded spec
General
| Manufacturer | John Deere |
|---|---|
| Model | 3120 |
| Category | Utility tractor |
| Type | 4x4 MFWD 4WD |
| Operating weight | 2,998lb |
Engine
| Make | Yanmar |
|---|---|
| Model | 3TNV84 |
| Power | 29.5hp |
| Cylinders | 3 |
| Displacement | 91.5ci |
| Bore | 3.31in |
| Stroke | 3.54in |
Transmission
| Type | Hydrostatic |
|---|
Chassis & drive
| Chassis | 4x4 MFWD 4WD |
|---|---|
| Drive | 4WD |
| Steering | Power |
| Brakes | Wet disc |
| Cab | Open operator station with two-post ROPS |
Hydraulics
| Type | Open center |
|---|
Power take-off
| Rear PTO | Independent |
|---|---|
| PTO speed | 2,100rpm |
Dimensions
| Length | 120.1in |
|---|---|
| Width | 52.4in |
| Height | 92.9in |
| Operating weight | 2,998lb |
Tires
| Front | 14-Jul |
|---|---|
| Rear | 11.2-24 |
Capacities
| Cooling system | 1.4gal |
|---|
Head to head
3120 vs. Utility median
How the John Deere 3120 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 29.5 hp | 55 hp | -46% | 21st |
| Engine Displacement | 91.5 ci | 183 ci | -50% | 20th |
| Cylinders | 3 | 4 | -25% | 23rd |
| Operating Weight | 2,998 lb | 5,303 lb | -43% | 23rd |
| Length | 120 in | 137 in | -12% | 27th |
| Width | 52.4 in | 66 in | -21% | 21st |
| Height | 92.9 in | 94.1 in | -1% | 47th |
Medians and percentiles are computed from the utility tractors in our database with a recorded value for each spec (sample sizes 3,933–5,720 models).
Compare to tractors with similar specs
Commonly compared John Deere tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| John Deere 1520 | 29.54 hp | 5,855 lb | 1968–1972 | Compare → |
| John Deere 790 | 30 hp | 1,930 lb | 2000–2007 | Compare → |
| John Deere 2032R (2017-2019) | 30.6 hp | 2,425 lb | 2017–2019 | Compare → |
| John Deere 3032E | 31 hp | 2,175 lb | — | Compare → |
| John Deere 870 | 28 hp | 2,515 lb | 1989–1998 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| AGCO ST30 | 30.3 hp | 2,594 lb | — | Compare → |
| Allis Chalmers D10 | 28.57 hp | 2,700 lb | 1959–1967 | Compare → |
| AGCO ST28A | 28.4 hp | 2,400 lb | — | Compare → |
| AGCO ST30x | 28.4 hp | 1,984 lb | — | Compare → |
| Allis Chalmers UC | 30.93 hp | 5,710 lb | — | Compare → |
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FAQ
Common questions
How much horsepower does the John Deere 3120 have?
The John Deere 3120 produces 29.5 hp from its 3-cylinder engine. Engine displacement is 91.5 ci.
What three-point hitch category does the John Deere 3120 use?
The John Deere 3120 has a Category I three-point hitch.
How much does the John Deere 3120 weigh?
The John Deere 3120 weighs about 2,998 lb in operating condition.
What transmission is in the John Deere 3120?
Transmission on the John Deere 3120 is Hydrostatic.
What hydraulics does the John Deere 3120 have?
The John Deere 3120 uses an Open center hydraulic system.
What are the factory tire sizes for the John Deere 3120?
The John Deere 3120 comes with 14-Jul front tires and 11.2-24 rear tires.
What maintenance does the John Deere 3120 require?
Like any tractor, the John Deere 3120 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.