John Deere 8420 Specs, Reviews, and Common Problems
| Engine Specs | |
|---|---|
| Type | diesel |
| Capacity | 8.1 |
| Horsepower | 330 |
| Torque | 1356 |
| User Manual | John Deere 8420 User Manual |
| Number of Cylinders | 6 |
| Cooling System Type | liquid-cooled |
| Emission Standards Compliance | tier 4 |
| Turbocharged or Naturally Aspirated | turbocharged |
| Engine RPM Range | 2100-1900 |
| Dimensions | |
| Length | 5994 |
| Width | 2967 |
| Height | 3368 |
| Weight | 14515 |
| Wheelbase | 3213 |
| Ground Clearance | 495 |
| Turning Radius | 7.7 |
| Performance Specs | |
| Top Speed | 42 |
| Parts & Accessories | John Deere 8420 Parts & Accessories |
| Fuel Consumption | 22.7 |
| Fuel Tank Capacity | 681 |
| Maximum Towing Capacity | 9072 |
| Maximum Drawbar Pull | 20.8 |
| Transmission Type | manual |
| Number of Forward and Reverse Gears | 16f/2r |
| Differential Lock | automatic |
| Axle Configuration | 4wd |
| Features | |
| Air Conditioning | true |
| Adjustable Seats | true |
| Suspension | independent suspension |
| Infotainment System | false |
| Number of Gears | 16 |
| Power Shift Transmission | true |
| Tires & Wheels | John Deere 8420 Tires & Wheels |
| Creep Gears | true |
| Tire Type | radial |
| Tire Size | 480/80r46 |
| Tire Configuration | singles |
| Standard PTO | true |
| Speed Options | 1000 rpm |
| LED Headlights | false |
| Work Lights | true |
| Beacon Light | false |
| Rollover Protection | true |
| Seat Belts | true |
| Emergency Stop | true |
| Fire Extinguisher Mount | true |
| Power Assisted Steering | true |
| Hydrostatic Steering | false |
| Filters & Maintenance | John Deere 8420 Filters & Maintenance |
| Heating | true |
| Ventilation | true |
| Electrical Specs | |
| Battery Type and Capacity | 12v / 140 amp-hour |
| Alternator Type and Power Output | 12v / 200a |
| Electrical System Type | alternator-regulated |
| Wiring Protection Features | fuses |
| Starter System | electric start |
| On-Board Computer or Diagnostic Systems | can-bus |
| Hydraulic Specs | |
| Hydraulic System Type | closed center |
| Pump Flow Rate | 227 |
| Maximum Hydraulic Pressure | 206.8 |
| Lift Capacity | 9072 |
| Control Type | electronic |
| Number of Hydraulic Remotes | 4 |
| Type of Remote Valves | standard |
| Three-Point Hitch | category 4 |
| Environmental and Durability Specs | |
| Operating Temperature Range | -20 to 43 celsius |
| Noise Level | 78 |
| Water Fording Depth | 0.9 |
| Corrosion Resistance | standard |
| Attachments and Compatibility Specs | |
| Lift Height for Front Loader Compatibility | 4.27 |
| Capacity for Front Loader Compatibility | 2637 |
| Digging Depth for Backhoe Compatibility | 4.14 |
| Reach for Backhoe Compatibility | 5.97 |
| Compatibility with Implements | plows, harrow, mowers |
| Optional Equipment | cab kits, extra weights, tracks |
| Connectivity Specs | |
| GPS and Navigation System Guidance | true |
| GPS and Navigation System Auto Steering | true |
| Remote Monitoring Telematics | true |
| Remote Monitoring App Integration | false |
| Bluetooth and WiFi Connectivity | true |
| Compatibility with Precision Agriculture Tools | true |
| Price Specs | |
| MSRP | 304000 |
| Current Market Price | 275000 |
| Lease Financing Option | true |
| Loan Terms | 5 years |
| Warranty Specs | |
| Duration of Warranty | 3 years/3000 hours |
| Coverage Details | drivetrain, hydraulics, electronics |
| Extended Warranty Options | true |
| Maintenance Specs | |
| Engine Oil Service Interval | 500 hours |
| Filters Service Interval | 1000 hours |
| Parts Availability | global |
| Dealer Support and Service Network | worldwide |
| Other Relevant Specs | |
| Manufacturer Recommended Uses | plowing, tilling, hauling |
| Year of Manufacture or Model Year | 2002 |
| Country of Origin or Manufacturing Facilities | usa |
| Market Availability | worldwide |
Pros and cons of John Deere 8420 - What You Need to Know
John Deere 8420 User Manual
John Deere 8420 Parts & Accessories
| Pros | Cons |
|---|---|
| Powerful engine with up to 310 horsepower | Expensive to purchase and maintain |
| Efficient fuel consumption for its size | Heavy and difficult to maneuver in tight spaces |
| Comfortable cab with good visibility | May not be suitable for small-scale farming operations |
| Advanced technology features for precision farming | Limited availability of replacement parts in some areas |
| Can handle a wide range of implements and attachments | May require specialized training to operate effectively |
Reviews of John Deere 8420 by Owners - Real User Experiences
| Name | Review |
|---|---|
| Tommy | The John Deere 8420 tractor is a beast of a machine! It has plenty of power and can handle any task you throw at it. The cab is comfortable and spacious, making long days in the field much more bearable. Overall, I am extremely satisfied with my purchase and would highly recommend this tractor to anyone in need of a reliable and powerful machine. |
| Samantha | I have been using the John Deere 8420 tractor for several months now and have been thoroughly impressed with its performance. The tractor is easy to handle and maneuver, even in tight spaces. The engine is powerful and has no trouble pulling heavy loads. The cab is also very comfortable and provides a smooth ride. I highly recommend this tractor to any farmer or rancher in need of a reliable and efficient machine. |
| Michael | The John Deere 8420 tractor is an exceptional machine that has exceeded my expectations. The tractor is very fuel-efficient and has no trouble handling tough tasks. The cab is also very comfortable and provides excellent visibility, making it easy to keep an eye on everything around you. Overall, I am very impressed with this tractor and would highly recommend it to anyone in need of a reliable and efficient machine. |
| Emily | The John Deere 8420 tractor is an excellent machine that has been a great addition to our farm. The tractor is very versatile and can handle a variety of tasks with ease. The cab is also very comfortable and provides a smooth ride, even over rough terrain. The only downside is that the tractor is quite large, so it can be difficult to maneuver in tight spaces. However, this is a small price to pay for the power and efficiency that this machine provides. |
| Chris | The John Deere 8420 tractor is a reliable and efficient machine that has been a great investment for our farm. The tractor is very easy to operate and has no trouble handling heavy loads. The cab is also very comfortable and provides excellent visibility, making it easy to keep an eye on everything around you. Overall, I am very satisfied with my purchase and would highly recommend this tractor to anyone in need of a reliable and efficient machine. |
Common Issues and Problems with John Deere 8420
John Deere 8420 Filters & Maintenance
John Deere 8420 Tires & Wheels
- Transmission problems, such as slipping or difficulty shifting gears
- Hydraulic system issues, including leaks or slow operation
- Engine problems, such as overheating or loss of power
- Electrical problems, such as faulty wiring or dead batteries
- Steering system problems, including difficulty turning or loose steering
- Brake system problems, such as failing brakes or excessive wear on brake components
- Tire issues, including punctures, flats, or excessive wear and tear
- PTO (power take-off) problems, such as failure to engage or disengage properly
Common Questions About John Deere 8420
-
What is the horsepower and torque of the John Deere 8420 tractor?
The John Deere 8420 tractor has a horsepower of 330 and torque of 1356.
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What is the transmission type and number of gears in the John Deere 8420 tractor?
The John Deere 8420 tractor has a manual transmission type with 16 forward and 2 reverse gears.
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What is the fuel consumption and fuel tank capacity of the John Deere 8420 tractor?
The John Deere 8420 tractor has a fuel consumption of 22.7 and a fuel tank capacity of 681.
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What is the lift capacity of the three-point hitch in the John Deere 8420 tractor?
The lift capacity of the three-point hitch in the John Deere 8420 tractor is 9072.
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What is the warranty duration and coverage details of the John Deere 8420 tractor?
The warranty duration of the John Deere 8420 tractor is 3 years/3000 hours and the coverage includes drivetrain, hydraulics, and electronics.
-
What is the maximum towing capacity of the John Deere 8420 tractor?
The John Deere 8420 tractor has a maximum towing capacity of 9072.
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What are the safety features available in the John Deere 8420 tractor?
The safety features available in the John Deere 8420 tractor include rollover protection, seat belts, emergency stop, and fire extinguisher mount.
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What is the manufacturer recommended use for the John Deere 8420 tractor?
The manufacturer recommended use for the John Deere 8420 tractor includes plowing, tilling, and hauling.
