The John Deere model 720 was available in row-crop, standard, or high-crop versions.
Manufacturer
John Deere
Total Built
22,925 (total row-crop)
Total Built
13,930 (diesel)
Total Built
4,917 (gasoline)
Total Built
3,670 (LP-gas)
Total Built
408 (all-fuel)
Mechanical
Two-wheel drive
Differential mechanical expanding shoe brakes
Open operator station.
Steering
manual
Steering
power OptOptional
Hydraulics
Type
open center
Valves
1
Hitch
Rear Type
II
Pto
Rear Pto
live
Rear Type
540 (1.375)
Serial Numbers
FAQ: How to read a serial number table.
1956
7200000
1957
7203420
1958
7217368
Electrical
Ground
positive *Positive ground for the 6V and 12V systems.
Ground
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 System
generator
Batteries
1 (diesel pony)
Batteries
2 (gas/LP)
Batteries
4 (diesel electric)
Battery Volts
6
720 / 02
Under the hood
Engine Detail (Option 1)
John Deere
gasoline
2-cylinder 4-valve
liquid-cooled
Displacement
360.5 ci5.9 L
Bore Stroke
6.00x6.375 inches152 x 162 mm
Air Cleaner
oil bath
Compression Ratio
6.14:1
Rated Rpm
1125
Firing Order
1-2
Starter Type
electric
Oil Capacity
12 qts (early)11.4 L
Oil Capacity
10 qts (late)*Lower capacity specified beginning at tractor SN 7214900.9.5 L
Coolant Capacity
29 qts27.4 L
Fuel Type
gasoline
Cylinders
2
Cooling
liquid-cooled
Engine Detail (Option 2)
John Deere
all-fuel
2-cylinder 4-valve
liquid-cooled
Displacement
360.5 ci5.9 L
Bore Stroke
6.00x6.375 inches152 x 162 mm
Air Cleaner
oil bath
Compression Ratio
4.91:1
Rated Rpm
1125
Firing Order
1-2
Starter Type
electric
Oil Capacity
12 qts (early)11.4 L
Oil Capacity
10 qts (late)*Lower capacity specified beginning at tractor SN 7214900.9.5 L
Cylinders
2
Cooling
liquid-cooled
Engine Detail (Option 3)
John Deere
LP gas
2-cylinder 4-valve
liquid-cooled
Displacement
360.5 ci5.9 L
Bore Stroke
6.00x6.375 inches152 x 162 mm
Air Cleaner
oil bath
Compression Ratio
7.94:1
Rated Rpm
1125
Firing Order
1-2
Starter
electric
Starter Volts
12
Fuel Type
LP gas
Cylinders
2
Cooling
liquid-cooled
Engine Detail (Option 4)
John Deere
diesel
2-cylinder 4-valve
liquid-cooled
Displacement
376 ci6.2 L
Bore Stroke
6.125x6.375 inches156 x 162 mm
Compression Ratio
16:1
Rated Rpm
1125
Firing Order
1-2
Starter
pony motor *Four-cylinder 6V electric-start gasoline pony power used to warm and start the diesel engine.
Starter
electric *Electric start became available as an option on the 720 Diesel in 1958.
