John Deere lawn tractors 420 tractor specifications

1983 - 1991

1983 - 1991 400 SeriesGarden tractor

Production

Production ManufacturerJohn Deere Garden tractor Built in Horicon, Wisconsin, USA Original price$6,489 (1983 ) $7,700 (1992 )

John Deere 420 Engine

John Deere 420 Engine 20HP Onan 781cc 2-cyl gasoline Fuel tank6.5 gal
24.6 L Engine details ...

1983 - 1991

400 Series

Garden tractor

Engine Detail

Engine Detail
Onan B48G
gasoline
2-cylinder
air-cooled horizontal-shaft opposed-twin
The B48G was the original engine on the Deere 420, used through the 1986 model year.
Displacement	781 cc 47.7 ci
Bore/Stroke	3.25x2.875 inches 83 x 73 mm
Power	20 hp 14.9 kW
Air cleaner	foam and paper
Compression	7.0:1
Rated RPM	3500
Idle RPM	1000-3450
Starter volts	12

Engine Oil

Engine Oil

Oil capacity	1.75 qts 1.7 L

Engine Detail

Engine Detail
Onan P220G
gasoline
2-cylinder
air-cooled horizontal-shaft opposed-twin
The P220G replaced the B48G in the John Deere 420 during the 1987 model year, starting at tractor serial number 420001.
Displacement	781 cc 47.7 ci
Bore/Stroke	3.2580x2.875 inches 83 x 73 mm
Power	20 hp 14.9 kW
Rated RPM	3600
Starter volts	12
Oil capacity	1.75 qts 1.7 L
Sparkplug	NGK BPR5EFS
	Champion RS14YC

John Deere 420 Transmission

John Deere 420 Transmission hydrostatic Transmission details ...

1983 - 1991

400 Series

Garden tractor

Transmission

Sundstrand 90

Type

shaft-driven hydrostatic

Gears

infinite forward and reverse (2-range)

Oil capacity

7.5 qts
7.1 L

Oil type

JD Hy-Gard

Speeds

Speeds

Mechanical

Mechanical Two-wheel drive Differential lockmechanical rear Power steering Differential mechanical drum brakes Open operator station.

Tractor hitch

Tractor hitch Rear Type0 OptOptional Rear lift640 lbs
290 kg

Power Take-off (PTO)

Power Take-off (PTO) Rear PTOindependent OptOptional Clutchelectric Rear RPM2000 Front PTOindependent Clutchelectric Front RPM3400

Dimensions & Tires

Dimensions & Tires Wheelbase52 inches
132 cm Weight993 lbs
450 kg Front tire18x8.50-8 Rear tire26x12.00-12 Full dimensions and tires ...

1983 - 1991

400 Series

Garden tractor

John Deere 420 Tires

John Deere 420 Tires
Ag front	4.80x4.00-8
Ag rear	23x10.50-12
Lawn/turf front	18x8.50-8
Lawn/turf rear	26x12.00-12

420 Serial Numbers

420 Serial Numbers 1983M00420X222001 1984M00420X285001 1985M00420X315001 1986M00420X360001 1987M00420X420001 1988M00420X475001 1989M00420X595001 1990M00420X010001 1991M00420X100001
FAQ: How to read a serial number table.