John Deere 420 Tractor Parts

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The John Deere 420 was a popular utility tractor manufactured from 1956 to 1958. Powered by a 25 HP gasoline engine and delivering approximately 21 PTO horsepower, this tractor proved reliable and versatile for smaller farming operations. Its ease of use and compact size made it a favorite for row crop work and general farm tasks.

The John Deere 420 was introduced in 1956 as a successor to earlier John Deere models, offering improved performance and features for the time. Production continued through 1958. Under the hood was a John Deere-built 2-cylinder gasoline engine producing approximately 25 horsepower with a displacement of around 114 cubic inches. The transmission was a standard 4-speed manual gearbox. The 420 had a PTO horsepower rating of approximately 21. The hydraulic system had a flow rate sufficient for operating implements, with a typical external remote option. It featured a Category I 3-point hitch, allowing for the attachment of a variety of implements. Common uses for the 420 included row crop cultivation, hay baling, light tillage operations, and general utility work on smaller farms. Its compact size and maneuverability distinguished it from larger John Deere models like the 620 and 720, making it ideal for tasks in tighter spaces.

Specifications

Engine	John Deere 2-Cylinder 25 HP Gasoline
PTO HP	21 HP @ 540 RPM
Transmission	4-Speed Manual
Hydraulics	3.5 GPM, 1 remotes
3-Point Hitch	Category I, 1500 lbs
Fuel Capacity	13 gallons
Weight	3000 lbs
Years Produced	1956-1958

Maintenance Tips

Change the engine oil and filter every 100 hours of operation using a high-quality oil appropriate for gasoline engines of that era.
Regularly inspect and maintain the hydraulic system, checking for leaks and ensuring proper fluid levels to prevent implement malfunctions.
Check and clean the fuel system components, including the fuel filter and carburetor, to ensure proper engine performance and prevent fuel-related issues.
Before seasonal storage, drain the fuel tank, add fuel stabilizer, and properly lubricate all grease fittings to prevent corrosion and ensure easy starting in the spring.

History & Background

Introduced in 1956, the John Deere 420 represented a step forward in utility tractor design for John Deere. It offered improvements in power and ergonomics compared to its predecessors. The 420 played a significant role in supporting smaller farms during the mid-20th century, proving to be a versatile and reliable workhorse.

Frequently Asked Questions

What engine is in the John Deere 420?

The John Deere 420 is equipped with a John Deere-built 2-cylinder gasoline engine that produces approximately 25 horsepower, with a displacement of around 114 cubic inches.

What is the PTO horsepower on a 420?

The John Deere 420 has a PTO horsepower rating of approximately 21 HP at 540 RPM.

What oil filter fits the 420?

The John Deere 420 typically uses an oil filter with a John Deere part number of AM101207. Cross-references include Fram PH3614, Wix 51060, and NAPA 1060.

What are common parts needed for the 420?

Common parts needed for the John Deere 420 include engine oil filters, fuel filters, air filters, fan belts, hydraulic seals, steering components like tie rod ends, and clutch components such as the clutch disc and release bearing.

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