| Manufacturer |
John Deere |
| Price |
3,000(USD) |
| Model |
620 |
| Equipment Type |
Row-Crop Tractors |
| Factory |
Waterloo, Iowa, USA |
ENGINES OVERVIEW
The John Deere 620 is powered by a versatile 5.0L 2-cylinder engine available in gasoline, all-fuel, and LP gas variants, offering flexibility in fuel choice based on availability and operational needs. The advantages of this engine include improved torque and efficiency, but potential challenges may arise from optimizing performance across different fuel types. Operators should consider the fuel infrastructure on their farms, as the choice of fuel can affect maintenance and overall operational costs.
| Description |
John Deere 5.0L 2-cyl gasoline John Deere 5.0L 2-cyl all-fuel John Deere 5.0L 2-cyl LP gas |
ENGINE DETAIL 1
The John Deere 620 features a robust 2-cylinder, 4-valve gasoline engine with a displacement of 302.9 ci (5.0 L), offering optimal torque for field work at a rated RPM of 1125. Its liquid-cooled system, with an oil capacity of 8 qts and coolant capacity of 26 qts, ensures efficient thermal management, crucial for prolonged operation in diverse agricultural scenarios. While the low RPM might limit peak horsepower, it enhances fuel efficiency and lower noise levels, making it suitable for applications like tilling and orchard work.
| Description |
John Deere gasoline 2-cylinder 4-valve liquid-cooled |
| Displacemen |
302.9ci / 5.0L |
| Bore/Strok |
5.50x6.375inches / 140x 162 mm |
| Rated RP |
1125 |
| Firing orde |
1-2 |
| Starter volt |
12 |
| Oil capacit |
8 qts/7.6 L |
| Coolant capacit |
26qts / 24.6L/28 qts (orchard)/26.5 L |
ENGINE DETAIL 2
The John Deere 620 features a robust 302.9 ci (5.0L) liquid-cooled, all-fuel 2-cylinder engine with a low compression ratio of 4.78:1, allowing for versatile fuel options but potentially reduced power output for certain agricultural tasks. Its large bore and stroke (5.50x6.375 inches) enhance torque at lower RPMs, making it suitable for heavy tillage. The oil bath air cleaner minimizes maintenance frequency, while an 8-quart oil capacity ensures effective lubrication, which can be advantageous for prolonged operation in demanding conditions.
| Description |
John Deere all-fuel 2-cylinder 4-valve liquid-cooled |
| Displacemen |
302.9ci / 5.0L |
| Bore/Strok |
5.50x6.375inches / 140x 162 mm |
| Air cleane |
oil bath |
| Compressio |
4.78:1 |
| Rated RP |
1125 |
| Firing orde |
1-2 |
| Starter volt |
12 |
| Oil capacit |
8 qts/7.6 L |
ENGINE DETAIL 3
The John Deere 620 tractor is powered by a 2-cylinder, 4-valve LP gas engine with a displacement of 5.0L, providing a robust torque profile suitable for heavy agricultural tasks. Its oil bath air cleaner ensures optimal filtration and reduced maintenance frequency, while an 8.1:1 compression ratio offers improved fuel efficiency, though it may limit power output compared to higher compression engines. With a rated RPM of 1125, this tractor is designed for low-speed, high-torque applications, making it ideal for fieldwork but potentially less responsive in high-speed operations.
| Description |
John Deere LP gas 2-cylinder 4-valve liquid-cooled |
| Displacemen |
302.9ci / 5.0L |
| Bore/Strok |
5.50x6.375inches / 140x 162 mm |
| Air cleane |
oil bath |
| Compressio |
8.1:1 |
| Rated RP |
1125 |
| Firing orde |
1-2 |
| Starter volt |
12 |
| Oil capacit |
8 qts/7.6 L |
JOHN DEERE 620 ENGINES
The John Deere 620 features a versatile 5.0L 2-cylinder engine capable of running on gasoline, all-fuel, or LP gas, offering flexibility depending on fuel availability and cost. With a substantial 20.5-gallon fuel tank for all-fuel and an auxiliary fuel capacity of 1 gallon, operators can expect extended operational periods, though the engine configuration may limit power output compared to multi-cylinder engines. A potential drawback includes higher fuel consumption rates for heavy tasks, making it ideal for light to moderate agricultural use where compatibility with different fuels is advantageous.
| Description |
John Deere 5.0L 2-cyl gasoline John Deere 5.0L 2-cyl all-fuel John Deere 5.0L 2-cyl LP gas |
| Fuel tan |
20.5 gal (all-fuel)/77.6 L/22.25 gal (gasoline)/84.2 L/33 gal (LP gas)/124.9 L |
| Aux. fue |
1 gal/3.8 L |
TRANSMISSION
The John Deere 620 tractor features an unsynchronized gear system with 6 forward and 1 reverse speed options, which can pose challenges in shifting under load. The mechanical dry disc clutch provides reliable engagement, but may require more effort compared to hydraulic systems, especially in demanding conditions. With an oil capacity of 24 quarts (22.7 liters), regular maintenance is crucial to ensure proper lubrication and longevity of the drivetrain.
| Manufacture |
John Deere |
| Typ |
unsynchronized gear |
| Gear |
6 forward and 1 reverse |
| Clutc |
mechanical dry disc |
| Oil capacit |
24qts / 22.7L |
SPEEDS
| Description |
With 13.6-38 rear tires |
JOHN DEERE 620 TRANSMISSION
The John Deere 620 tractor's 6-speed unsynchronized gear system provides a simple transmission mechanism ideal for ease of operation. However, unsynchronized gears can lead to challenges in shifting under load, potentially causing wear over time. This design is advantageous for agricultural applications that require straightforward gear changes but may not be suitable for high-speed or heavy-duty operations.
| Description |
6-speed unsynchronized gear |
MECHANICAL
The John Deere 620 features a two-wheel drive system and mechanical contracting band brakes, providing reliable and straightforward braking power for various agricultural tasks. Its open operator station enhances visibility and operator comfort, while power-assisted steering improves maneuverability in tight spaces. However, the lack of four-wheel drive may limit traction in challenging terrain, making it best suited for lighter duties on well-maintained surfaces.
| Description |
Two-wheel drive Differential mechanical contracting band brakes Open operator station |
| Steerin |
power assist |
HYDRAULICS
| Pressur |
1200psi / 82.7bar |
| Valve |
1 or 2 |
| Pump flo |
8.9gpm / 33.7lpm |
TRACTOR HITCH
POWER TAKE-OFF (PTO)
JOHN DEERE 620 TIRES
The John Deere 620 tractor features high-crop front tires (6.00-16/7.50-20) that provide superior clearance for row-crop applications, making it ideal for operations in uneven terrain or when working with tall crops. The standard rear tires (12.4-38/13-30) enhance traction and stability during fieldwork. However, the dual tire size may pose challenges in sourcing aftermarket replacements and achieving equal wear rates across tire types.
| Ag fron |
6.00-16/7.50-20 (high-crop) |
| Ag rea |
12.4-38/13-30 (standard) |
DIMENSIONS & TIRES
The John Deere 620 tractor features a 90-inch wheelbase, providing stability for various agricultural tasks. Weighing between 5,858 and 6,800 pounds, it exhibits robustness suitable for heavy tillage or pulling operations, although the weight may limit its maneuverability in tighter spaces. Its tire specifications (front: 6.00-16, rear: 12.4-38) ensure good traction and flotation, but operators should consider the terrain type and required plowing depth for optimal performance.
| Wheelbas |
90inches / 228cm |
| Weigh |
5858 to 6800 pounds |
| Front tir |
6.00-16 |
| Rear tir |
12.4-38 |
620 SERIAL NUMBERS
ELECTRICAL
| Groun |
positive |
| Batterie |
2 |
| Battery volt |
6 |
