John Deere 420

The John Deere 420 is a tractor produced by John Deere Lawn Tractors. It is equipped with a 781 cc 47.7 ci engine. The listed engine power is Gasoline (gross): 20 hp / 14.9 kW; Gasoline (listed): 20 hp / 14.9 kW. Transmission: Sundstrand Series 15 Model 90. Operating weight: 993 lbs 450 kg.

Overview

	1983 - 1991 400 SeriesGarden tractor 400 Series Garden tractor

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

John Deere 420 Engine
20HP Onan 781cc 2-cyl gasoline
Fuel tank	6.5 gal 24.6 L
Engine details ...

John Deere 420 Transmission
hydrostatic
Transmission details ...

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

Tractor hitch
Rear Type	0 OptOptional
Control	directional control
Rear lift	640 lbs 290 kg

Power Take-off (PTO)
Rear PTO	independent OptOptional
Clutch	electric
Rear PTO Type	2000
Front PTO	independent
Clutch	electric
Front PTO Type	pulley

Dimensions & Tires
Wheelbase	52 inches 132 cm
Weight	993 lbs 450 kg
Front tire	18x8.50-8
Rear tire	26x12.00-12
Full dimensions and tires ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	20
Battery volts	12
Battery Group	BCI 22F

References
Lawn & Garden Tractors published in 1983, by John Deere
Lawn & Garden Tractors published in 1984, by John Deere
Lawn & Garden Tractors published in 1985, by John Deere
Lawn & Garden Tractors published in 1986, by John Deere
Lawn & Garden Tractors published in 1988, by John Deere
Lawn & Garden Tractors published in 1989, by John Deere
Lawn & Garden Equipment published in 1990, by John Deere
Lawn & Garden Tractors published in 1990, by John Deere
Lawn & Garden Tractors published in 1991, by John Deere
Grounds Care & Recreation Products Sales Manual published in 1989, by John Deere
Consumer Products Price List published in 1983, by John Deere
Grounds Care Equipment Purchasing Guide published in 1983, by John Deere
Operators Manual 316, 318 and 420 Lawn and Garden Tractors (OM-M72236) published in 1986
Operators Manual 316, 318 and 420 Lawn and Garden Tractors (OM-M79655) published in 1989
Operator's Manual 316, 318 and 420 Lawn and Garden Tractors (OM-M87709) published in 1984
Technical Manual 316, 318 and 420 Lawn and Garden Tractors (TM1590) published in 1995

Engine

Engine Detail — 781 cc / 47.7 ci Gasoline

Manufacturer	Onan B48G
Fuel Type	Gasoline
Configuration	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 (gross)	20 hp 14.9 kW
Air cleaner	foam and paper
Compression	7.0:1
Rated RPM	3500
Idle RPM	1000-3450
Starter volts	12
Oil capacity	1.75 qts 1.7 L

Engine Detail — 781 cc / 47.7 ci Gasoline

Manufacturer	Onan P220G
Fuel Type	Gasoline
Configuration	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 Engine
Image courtesy of Terry Russell

Transmission

Transmission — Sundstrand Series 15 Model 90

Transmission	Sundstrand Series 15 Model 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

	JD Hy-Gard

420 Transmission Controls
1	Throttle
2	Forward/reverse
3	Left brake
4	Right brake
5	Range shift
6	Differential lock

John Deere 420 Transmission

Dimensions

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

Dimensions
Wheelbase	52 inches 132 cm
Length	77 inches 195 cm
Width	51.5 inches 130 cm
Height	47.5 inches 120 cm
Front tread	36 inches 91 cm
Rear tread	32/38.6 inches 81/98 cm

John Deere 420 Weight
Shipping	993 lbs 450 kg
Max front axle	1060 lbs 480 kg
Max rear axle	1800 lbs 816 kg

Attachments

Attachment overview
50" mid-mount mower deck
60" mid-mount mower deck
Snowblower
Blade
Front-end loader
A rear-mounted finish mower was available for the 420 if the tractor was equipped with 2000 RPM rear PTO and a three-point hitch.
Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments.

Photos

John Deere 420

John Deere 420

John Deere 420

John Deere 420

John Deere 420 with 44 front-end loader.

John Deere 420 with 44 front-end loader.

John Deere 420 with 44 front-end loader.

John Deere 420 with rear-mount finish mower.

John Deere 420 operator station and controls.