Tractors > John Deere > 720

John Deere 720 Engine



John Deere 720 tractor photo
1956 - 1958
Two-Cylinder 20 Series
Row-Crop tractor
Series map:
620
720
820
53.3hp*
65.6hp*
74.4hp*
*Estimated engine power for comparison only.
Engine options
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
Engine Detail
John Deere
gasoline
2-cylinder 4-valve
liquid-cooled
Displacement360.5 ci
5.9 L
Bore/Stroke6.00x6.375 inches
152 x 162 mm
Air cleaneroil bath
Compression6.14:1
Rated RPM1125
Firing order1-2
Starter typeelectric
Oil capacity12 qts (early)
11.4 L
 10 qts (late)*Lower capacity specified beginning at tractor SN 7214900.
9.5 L
Coolant capacity29 qts
27.4 L
Engine Detail
John Deere
all-fuel
2-cylinder 4-valve
liquid-cooled
Displacement360.5 ci
5.9 L
Bore/Stroke6.00x6.375 inches
152 x 162 mm
Air cleaneroil bath
Compression4.91:1
Rated RPM1125
Firing order1-2
Starter typeelectric
Oil capacity12 qts (early)
11.4 L
 10 qts (late)*Lower capacity specified beginning at tractor SN 7214900.
9.5 L
Engine Detail
John Deere
LP gas
2-cylinder 4-valve
liquid-cooled
Displacement360.5 ci
5.9 L
Bore/Stroke6.00x6.375 inches
152 x 162 mm
Air cleaneroil bath
Compression7.94:1
Rated RPM1125
Firing order1-2
Starterelectric
Starter volts12
Engine Detail
John Deere
diesel
2-cylinder 4-valve
liquid-cooled
Displacement376 ci
6.2 L
Bore/Stroke6.125x6.375 inches
156 x 162 mm
Compression16:1
Rated RPM1125
Firing order1-2
Starterpony motor *Four-cylinder 6V electric-start gasoline pony power used to warm and start the diesel engine.
 electric *Electric start became available as an option on the 720 Diesel in 1958.
Starter volts6 (diesel pony)
 24 (diesel electric)
Oil capacity11 qts (diesel)
10.4 L
 1 qts (pony)
0.9 L
Page information
Peter Easterlund - owner of TractorData.com
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Updated on September 28, 2023
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