John Deere 400

The John Deere 400, produced from 1975 to 1983, is a versatile and powerful garden tractor that set new standards in its class. Equipped with a 19.9-horsepower Kohler engine and hydrostatic transmission, it offered smooth performance and reliability. Known as a “super garden tractor,” it supported a variety of attachments, including mowers, snowblowers, and loaders, making it ideal for diverse tasks. While some users report issues like hydro creep and steering wear, regular maintenance ensures durability. The 400 remains a favorite among collectors and users for its robust build, efficiency, and adaptability across residential and professional applications.

Overview
ModelJohn Deere 400
Years1975 – 1983
Series400 Series Garden Tractor
ManufacturerJohn Deere
FactoryHoricon, Wisconsin, USA
Engine
EngineKohler K532AQS gasoline, 2-cylinder, air-cooled horizontal-shaft opposed-twin
Displacement879 cc (53.67 ci)
Bore/Stroke3.38 x 3.00 inches (86 x 76 mm)
Power (gross)19.9 hp (14.8 kW)
Air cleanerDry
Rated RPM3500
Starter volts12
Transmission
TransmissionSundstrand
TypeShaft-driven hydrostatic
GearsInfinite forward and reverse (2-range)
Oil capacity5.5 qts (5.2 L)
Oil typeLow-Viscosity Hy-Gard
Oil change interval500 hours
Mechanical
ChassisTwo-wheel drive
SteeringPower steering
BrakesMechanical shoe brakes
Operator stationOpen
Capacity
Fuel capacity4.5 gal (17.0 L)
Hydraulic system capacity1.375 gal (5.2 L)
Hydraulics
Capacity1.375 gal (5.2 L)
Front valves2
Tractor Hitch
Rear type0 (optional)
Power Take-off (PTO)
Rear PTOIndependent (optional)
Rear PTO clutchMechanical
Rear PTO typeDrilled shaft
Rear PTO RPM840 @ 3500 engine RPM
Front PTOIndependent
Front PTO clutchMechanical
Front PTO type2100 RPM
Dimensions
Wheelbase52 inches (132 cm)
Length76 inches (193 cm)
Width49 inches (124 cm)
Height44 inches (111 cm)
Weight975 lbs (442 kg)
Tires
Front tire18×8.50-8
Rear tire26×12.00-12
Serial Numbers
197530001
197655001
197770001
197880001
197995001
1980120001
1981155001
1982190001
Electrical
GroundNegative
Battery volts12
John Deere 400 Overview

Manufactured between 1975 and 1983 in Horicon, Wisconsin, the John Deere 400 marked a significant advancement in garden tractors, often referred to as the company’s first “super garden tractor.” Equipped with a 19.9-horsepower Kohler K532AQS engine and a hydrostatic transmission, it offered an infinite range of forward and reverse gears, providing exceptional versatility across various terrains. The tractor’s robust construction and compatibility with a wide array of attachments, including a 60-inch mower deck, snowblower, blade, front-end loader, and backhoe, made it a versatile tool for homeowners and professionals alike.

Users have praised the 400 for its smooth operation and efficiency, even in challenging conditions like wet, heavy grass and uphill terrains. However, some common issues have been noted. Hydrostatic transmission linkage can develop “hydro creep” due to misalignment or worn bushings. The engine’s oiling system requires diligent maintenance to prevent right-side rod failures, leading many owners to install oil pressure gauges for monitoring. Front-end components and steering mechanisms may wear over time, resulting in looseness that often necessitates adjustment or repair. Additionally, the electric fuel pump has been reported to fail occasionally, though replacements are readily available.
Despite these concerns, the John Deere 400 remains a respected model among classic tractor enthusiasts. Its durability, powerful performance, and adaptability continue to make it a valuable asset for various gardening and landscaping tasks. Regular maintenance is essential to address potential issues and ensure the tractor operates at its full potential. Overall, the John Deere 400 stands as a testament to the brand’s commitment to quality and innovation in the garden tractor market.

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