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 rated power output is 20 hp 14.9 kW. Transmission: Sundstrand Series 15 Model 90. Operating weight: 993 lbs 450 kg.
Engine Power
20 hp
14.9 kW
Fuel & Capacities
6.5 gal
24.6 L
Transmission
Sundstrand Series 15 Model 90
Operating Weight
993 lbs
450 kg
John Deere Lawn Tractors John Deere 420 Serial Number & Year Decoder
Find the exact manufacture year of your tractor by checking your chassis serial number below.
Where to Find the Serial NumberThe serial number plate is commonly located on the front frame, tractor transmission housing (right side), or instrument panel badge.
Overview
 | 1983 - 1991
400 SeriesGarden tractor |
|---|---|
1983 - 1991 | |
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.
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