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John Deere 120 vs John Deere 140
Verdict: John Deere 120 vs John Deere 140
The John Deere 120 and the John Deere 140 are both lawn tractors — here is how they stack up on the figures that matter. Both are rated at the same 12 hp. John Deere 120 is the lighter machine (333 kg vs 730 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. John Deere 120 is the newer design (1970 vs 1968). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
John Deere
71
Fit score
Best match
Clear
John Deere
71
Fit score
Best match
Clear
Rated power
12 hp
12 hp
Confidence
98%
98%
Guide price
—
—
Overview
Manufacturer
John DeereReference
John DeereReference
air-cooled horizontal-shaftReference
The 14-horsepower K321 engine was first used in 1969 models, serial number 10,001.Reference
Original price
—
$1,745 (1974 H3 )Reference
Brakes
—
drum (1971 on)Reference
Engine
Fuel tank
6.6 LReference
6.6 LReference
Displacement
29.1 ciReference
31.27 ciReference
Bore/Stroke
86 x 83 mmReference
89 x 83 mmReference
Power (gross)
8.9 kWReference
8.9 kWReference
Air cleaner
dryReference
dryReference
Idle RPM
1200-3800Reference
1500-3800Reference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Sparkplug gap
0.635 mmReference
0.635 mmReference
Point gap
0.508 mmReference
0.508 mmReference
Intake valve clearance
0.254 mmReference
0.254 mmReference
Exhaust valve clearance
0.508 mmReference
0.508 mmReference
Oil capacity
4.7 LReference
4.7 LReference
Oil change
500 hReference
500 hReference
Rated RPM
—
3600Reference
Power
—
10.4 kWReference
Transmission
1
BrakeReference
ClutchReference
2
Forward/ReverseReference
Forward/ReverseReference
3
ThrottleReference
ThrottleReference
4
Parking brakeReference
Brakes (not shown)Reference
5
—
Parking brakeReference
Transmission
Sundstrand 15Reference
Sundstrand 15Reference
Gears
infinite forward and reverseReference
infinite forward and reverseReference
Oil type
Deere 303Reference
Deere 303Reference
PTO & Hydraulics
Type
shaft-driven hydrostaticReference
shaft-driven hydrostaticReference
Front PTO
independentReference
independentReference
Clutch
electricReference
electricReference
Rear Type
—
0Reference
Rear PTO
—
liveReference
Dimensions
Wheelbase
116 cmReference
116 cmReference
Weight
333 kgReference
349 kgReference
Front tire
16x6.50-8Reference
16x6.50-8Reference
Rear tire
23x8.50-12Reference
23x8.50-12Reference
Lawn/turf front
4.80/4.00-8Reference
16x6.50-8Reference
Lawn/turf rear
23x10.50-12Reference
23x8.50-12Reference
Length
171 cmReference
171 cmReference
Width
96 cmReference
96 cmReference
Height
109 cmReference
—
Front tread
79 cmReference
79 cmReference
Rear tread
73/87 cmReference
73/87 cmReference
Ag front
—
4.80/4.00-8Reference
Ag rear
—
23x8.50-12Reference
Height (steering wheel)
—
109 cmReference
John Deere 120 attachments
120 Serial Number Location
120 Serial Numbers
1970
1001Reference
22401Reference
1971
7500Reference
30001Reference
Electrical
Ground
negativeReference
negativeReference
Battery volts
12Reference
12Reference
Battery AH
14Reference
40Reference
Attachment overview
Variants
140H3
—
three hydraulic remotesReference
John Deere 140 attachments
140 Serial Number Location
140 Serial Numbers
1968
—
1001Reference
1969
—
10001Reference
1972
—
38001Reference
1973
—
46501Reference
1974
—
56501Reference
Final
—
UnknownReference
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.