Compare/John Deere 420 vs John Deere E120

John Deere 420 vs John Deere E120

Verdict: John Deere 420 vs John Deere E120

The John Deere 420 and the John Deere E120 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 20 hp. John Deere E120 is the lighter machine (190 kg vs 450 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 420 holds more fuel (24.6 L vs 9.1 L) for longer stints between fills. John Deere E120 is the newer design (2018 vs 1983). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

John Deere

Fit score

Best match

Clear

John Deere

Fit score

Best match

Clear

Rated power

20 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

Image courtesy of Terry RussellReference

Hydrostatic transmission with cruise control.Reference

Original price

$7,700 (1992 )Reference

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Differential lock

mechanical rearReference

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Engine

Fuel tank

24.6 LReference

9.1 LReference

Displacement

47.7 ciReference

40.03 ciReference

Bore/Stroke

83 x 73 mmReference

75 x 73 mmReference

Power (gross)

14.9 kWReference

Air cleaner

foam and paperReference

—

Compression

7.0:1Reference

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Rated RPM

3600Reference

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Idle RPM

1000-3450Reference

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Starter volts

12Reference

Oil capacity

7.1 LReference

2.6 LReference

Power

14.9 kWReference

—

Sparkplug

Champion RS14YCReference

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Starter

—

electricReference

Sparkplug gap

—

0.762 mmReference

Transmission

ThrottleReference

—

Forward/reverseReference

—

Left brakeReference

—

Right brakeReference

—

Range shiftReference

—

Differential lockReference

—

Transmission

Sundstrand Series 15 Model 90Reference

Tuff Torq TL200Reference

Type

shaft-driven hydrostaticReference

belt-driven hydrostaticReference

Gears

infinite forward and reverse (2-range)Reference

infinite forward and reverseReference

Oil type

JD Hy-GardReference

—

Oil change

—

sealed unit, owner service is not recommendedReference

PTO & Hydraulics

Rear Type

0Reference

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Control

directional controlReference

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Rear lift

290 kgReference

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Rear PTO

independentReference

—

Clutch

electricReference

manualReference

Rear PTO Type

2000Reference

—

Front PTO

independentReference

—

Front PTO Type

pulleyReference

—

Mid PTO

—

independentReference

Dimensions

Wheelbase

132 cmReference

124 cmReference

Weight

450 kgReference

190 kgReference

Front tire

18x8.50-8Reference

15x6-6Reference

Rear tire

26x12.00-12Reference

20x8-8Reference

Ag front

4.80x4.00-8Reference

—

Ag rear

23x10.50-12Reference

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Lawn/turf front

18x8.50-8Reference

15x6-6Reference

Lawn/turf rear

26x12.00-12Reference

20x8-8Reference

Length

195 cmReference

174 cmReference

Width

130 cmReference

—

Height

120 cmReference

113 cmReference

Front tread

91 cmReference

—

Rear tread

81/98 cmReference

—

Shipping

450 kgReference

—

Max front axle

480 kgReference

—

Max rear axle

816 kgReference

—

Shipping weight

—

190 kgReference

Front axle

—

Cast-ironReference

John Deere 420 attachments

420 Serial Number Location

420 Serial Numbers

1983

M00420X222001Reference

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1984

M00420X285001Reference

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1985

M00420X315001Reference

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1986

M00420X360001Reference

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1987

M00420X420001Reference

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1988

M00420X475001Reference

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1989

M00420X595001Reference

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1990

M00420X010001Reference

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1991

M00420X100001Reference

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Electrical

Ground

negativeReference

Charging system

alternatorReference

—

Charging amps

20Reference

9Reference

Battery volts

12Reference

Battery Group

BCI 22FReference

—

Battery CCA

—

300Reference

Attachment overview

John Deere E120 attachments

E120 Serial Number Location

E120 Serial Numbers

2018

—

J01001Reference

2019

—

K100001Reference

2020

—

L200001Reference

42" Mower deck

Cutting width

—

106 cmReference

Overall width

—

139 cmReference

Cut height

—

2 to 10 cmReference

Cut positions

—

13Reference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.