John Deere 720

John Deere 720 tractor photo
1956 - 1958
Two-Cylinder 20 Series
Row-Crop tractor
Series map:
*Estimated engine power for comparison only.
ManufacturerJohn Deere
Row-Crop tractor
Built in Waterloo, Iowa, USA
Total built22,925 (total row-crop)
 13,930 (diesel)
 4,917 (gasoline)
 3,670 (LP-gas)
 408 (all-fuel)
Original price was $3,700 in 1958
The John Deere model 720 was available in row-crop, standard, or high-crop versions.
720row-crop chassis
John Deere 720 Engines
John Deere 5.9L 2-cyl gasoline
John Deere 5.9L 2-cyl all-fuel
John Deere 5.9L 2-cyl LP gas
John Deere 6.2L 2-cyl diesel
Fuel tank24.5 gal (all-fuel)
92.7 L
 26.5 gal (gasoline)
100.3 L
 33 gal (LP gas)
124.9 L
 20 gal (diesel)
75.7 L
Aux. fuel1 gal (all-fuel)
3.8 L
 0.25 gal (diesel)
0.9 L
Engine details ...
John Deere 720 Power
Drawbar (claimed)53 hp
39.5 kW
PTO (claimed)59 hp
44.0 kW
Belt (claimed)50.67 hp
37.8 kW
Drawbar (tested)53.41 hp
39.8 kW
Belt (tested)57.77 hp
43.1 kW
Performance test details ...
Two-wheel drive
 power OptOptional
Differential mechanical expanding shoe brakes
Open operator station.
Typeopen center
Tractor hitch
Rear TypeII
Power Take-off (PTO)
Rear PTOlive
Rear PTO Type540 (1.375)
Dimensions & Tires
Wheelbase93.7 inches
237 cm
Weight6790 lbs
3079 kg
Front tire6.00-16
Rear tire12-38
Full dimensions and tires ...
720 Serial Number Location
John Deere 720 serial number location
Right side of tractor in front of and below pulley.
720 Serial Numbers

FAQ: How to read a serial number table.
Groundpositive *Positive ground for the 6V and 12V systems.
 floating *The 24V electric-start diesel is not chassis grounded, with both sides of the battery system connected to the starter. The lights and gauges are split on two 12V systems.
Charging systemgenerator
Batteries1 (diesel pony)
 2 (gas/LP)
 4 (diesel electric)
Battery volts6
720 references literature
The John Deere 20 series Two Cylinder Tractors by Benjamin Hain
Tractors 1918-1976 published by John Deere*
The 1957 John Deere Tractors are here!
Facts about horsepower and fuel economy published in 1957, by John Deere
*Publication contains known errors.
720 manuals literature
Operator's Manual 720 (OM-R2055) published in 1956
Operator's Manual 720 Diesel (OM-R2057) published in 1956
Operator's Manual 720 (OM-R2082) published in 1957
Page information
Peter Easterlund - owner of
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TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999.
Peter Easterlund - owner/author
Updated on September 28, 2023 - Official operator manuals for purchase or download from Deere.
©2000-2023 -®. Notice: Every attempt is made to ensure the data listed is accurate. However, differences between sources, incomplete listings, errors, and data entry mistakes do occur. Consult official literature from the manufacturer before attempting any service or repair.