Compare/John Deere 56 vs John Deere 66

John Deere 56 vs John Deere 66

Verdict: John Deere 56 vs John Deere 66

The John Deere 56 and the John Deere 66 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 6 hp. John Deere 56 is the lighter machine (122 kg vs 305 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 66 is the newer design (1975 vs 1970). 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

6 hp

Confidence

98%

Guide price

—

Overview

Manufacturer

John DeereReference

Three-speed transmission introduced in 1973, type code T2042.Reference

air-cooled vertical-shaftReference

Final drives

chainReference

—

Engine

Displacement

13.53 ciReference

Bore/Stroke

67 x 64 mmReference

Power (gross)

4.5 kWReference

—

Starter

electricReference

Starter volts

12Reference

Fuel tank

—

3.8 LReference

Power

—

4.5 kWReference

Air cleaner

—

dry elementReference

Idle RPM

—

1750-3700Reference

Sparkplug

—

Champion J-8Reference

Sparkplug gap

—

0.762 mmReference

Point gap

—

0.508 mmReference

Oil capacity

—

0.8 LReference

Transmission

Gears

3 forward and 1 reverseReference

5 forward and 1 reverseReference

PTO & Hydraulics

Mid PTO

independentReference

Clutch

mechanicalReference

Dimensions

Weight

122 kgReference

151 kgReference

Front tire

11x4.00-5Reference

4.80x4.00-8Reference

Rear tire

4.80x4.00-8Reference

11x4.00-5Reference

Lawn/turf front

11x4.00-5Reference

4.80x4.00-8Reference

Lawn/turf rear

4.80x4.00-8Reference

11x4.00-5Reference

Length

—

148 cmReference

Height (steering wheel)

—

96 cmReference

John Deere 56 attachments

56 Serial Number Location

56 Serial Numbers

1970

001001Reference

—

1971

020001Reference

—

1972

035786Reference

—

1973

044001Reference

—

1974

061500Reference

—

Final

080000Reference

—

Electrical

Ground

negativeReference

Battery volts

12Reference

Attachment overview

28" Mower deck

Type

belt-driven gearReference

Cutting width

71 cmReference

76 cmReference

Cut height

2 to 7 cmReference

2 to 10 cmReference

John Deere 66 attachments

66 Serial Numbers

1975

—

030001Reference

1976

—

055001Reference

1977

—

070001Reference

Location:

—

Serial number plate on the rear of the Deere 66.Reference

30" Mower deck

Overall width

—

104 cmReference

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.