John Deere 720 tractor specifications

1956 - 1958

1956 - 1958 Two-Cylinder 20 SeriesRow-Crop tractor

Production

Production Manufacturer:John Deere
Type:Row-Crop tractor
Factory:Waterloo, Iowa, USA
Total built:22,925 (row-crop)
4523 (standard)
Original price:$3,700 (1958 )
The John Deere model 720 was available in row-crop, standard, or high-crop versions.

Variants

Variants 720:row-crop chassis
720S:standard-tread
720HC:high-crop

1956 - 1958

Two-Cylinder 20 Series

Row-Crop tractor

Production

Production
Manufacturer:	John Deere
Type:	Row-Crop tractor
Factory:	Waterloo, Iowa, USA
Total built:	22,925 (row-crop)
	4523 (standard)
Original price:	$3,700 (1958 )
The John Deere model 720 was available in row-crop, standard, or high-crop versions.

Variants

Variants
720:	row-crop chassis
720S:	standard-tread
720HC:	high-crop

John Deere 720 Power

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
power test details ...

John Deere 720 Engines

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 tank:	24.5 gal 92.7 L (all-fuel)
	26.5 gal 100.3 L (gasoline)
	33 gal 124.9 L (LP gas)
	20 gal 75.7 L (diesel)
Aux. fuel:	1 gal 3.8 L (all-fuel)
	0.25 gal 0.9 L (diesel)
Engine details ...

Mechanical

Mechanical
Chassis:	4x2 2WD
Steering:	manual
	power*Optional
Brakes:	differential mechanical expanding shoe
Cab:	Open operator station.
Transmission:	6-speed unsynchronized gear
Transmission details ...

Hydraulics

Hydraulics
Type:	open center
Valves:	1

Tractor hitch

Tractor hitch
Rear Type:	II

Power Take-off (PTO)

Power Take-off (PTO)
Rear PTO:	live
Rear RPM:	540 (1.375)

Dimensions & Tires

Dimensions & Tires
Wheelbase:	93.7 inches 237 cm
Weight:	6790 lbs 3079 kg
Front tire:	6.00-16
Rear tire:	12-38
Full dimensions and tires ...

John Deere 720 attachments

John Deere 720 attachments
front-end loader
Attachment details ...

720 Serial Numbers

720 Serial Numbers
Location:	Right side of tractor in front of and below pulley.
photo of 720 serial number
1956:	7200000
1957:	7203420
1958:	7217368
how to read serial numbers...

Electrical

Electrical
Ground:	positive*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 system:	generator
Batteries:	1 (diesel pony)
	2 (gas/LP)
	4 (diesel electric)
Battery volts:	6

John Deere 720 Power

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
power test details ...

1956 - 1958

Two-Cylinder 20 Series

Row-Crop tractor

Nebraska Tractor Test 593

Nebraska Tractor Test 593
LP gas 6-speed 2WD September 17 - 19, 1956 Link: Nebraska Tractor Test 593 file
Belt power (max):	57.33 hp 42.8 kW
Belt fuel use (max):	6.3 gal/hour 23.8 l/hour
Drawbar performance
Max power:	52.38 hp 39.1 kW
Gear 4 used for power test.
Max pull:	6,697 lbs 3037 kg
Gear 1 used for pull test.

Nebraska Tractor Test 594

Nebraska Tractor Test 594
Diesel 6-speed 2WD September 18 - 22, 1956 Link: Nebraska Tractor Test 594 file
Belt power (max):	56.66 hp 42.3 kW
Belt fuel use (max):	3.2 gal/hour 12.1 l/hour
Drawbar performance
Max power:	51.83 hp 38.6 kW
Gear 4 used for power test.
Max pull:	6,547 lbs 2969 kg
Gear 1 used for pull test.

Nebraska Tractor Test 605

Nebraska Tractor Test 605
Gasoline 6-speed 2WD November 6 - 12, 1956 Link: Nebraska Tractor Test 605 file
Belt power (max):	57.77 hp 43.1 kW
Belt fuel use (max):	5.2 gal/hour 19.7 l/hour
Drawbar performance
Max power:	53.41 hp 39.8 kW
Gear 4 used for power test.
Max pull:	6,647 lbs 3015 kg
Gear 1 used for pull test.

Nebraska Tractor Test 606

Nebraska Tractor Test 606
Tractor fuel 6-speed 2WD November 12 - 19, 1956 Link: Nebraska Tractor Test 606 file
Belt power (max):	44.13 hp 32.9 kW
Belt fuel use (max):	4.4 gal/hour 16.7 l/hour
Drawbar performance
Max power:	40.78 hp 30.4 kW
Gear 4 used for power test.
Max pull:	6,608 lbs 2997 kg
Gear 1 used for pull test.

John Deere 720 Engines

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 tank:24.5 gal
92.7 L (all-fuel)
26.5 gal
100.3 L (gasoline)
33 gal
124.9 L (LP gas)
20 gal
75.7 L (diesel)
Aux. fuel:1 gal
3.8 L (all-fuel)
0.25 gal
0.9 L (diesel)
Engine details ...

1956 - 1958

Two-Cylinder 20 Series

Row-Crop tractor

Engines overview

Engines overview
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

Engine Detail
John Deere
gasoline
2-cylinder 4-valve
liquid-cooled
Displacement:	360.5 ci 5.9 L
Bore/Stroke:	6.00x6.375 inches 152 x 162 mm
Air cleaner:	oil bath
Compression:	6.14:1
Rated RPM:	1125
Firing order:	1-2
Starter type:	electric
Coolant capacity:	29 qts 27.4 L

Engine Detail

Engine Detail
John Deere
all-fuel
2-cylinder 4-valve
liquid-cooled
Displacement:	360.5 ci 5.9 L
Bore/Stroke:	6.00x6.375 inches 152 x 162 mm
Air cleaner:	oil bath
Compression:	4.91:1
Rated RPM:	1125
Firing order:	1-2
Starter type:	electric

Engine Detail

Engine Detail
John Deere
LP gas
2-cylinder 4-valve
liquid-cooled
Displacement:	360.5 ci 5.9 L
Bore/Stroke:	6.00x6.375 inches 152 x 162 mm
Air cleaner:	oil bath
Compression:	7.94:1
Rated RPM:	1125
Firing order:	1-2
Starter:	electric
Starter volts:	12

Engine Detail

Engine Detail
John Deere
diesel
2-cylinder 4-valve
liquid-cooled
Displacement:	376 ci 6.2 L
Bore/Stroke:	6.125x6.375 inches 156 x 162 mm
Compression:	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.
	electric*Electric start became available as an option on the 720 Diesel in 1958.
Starter volts:	6 (diesel pony)
	24 (diesel electric)

Mechanical

Mechanical Chassis:4x2 2WD
Steering:manual
power*Optional
Brakes:differential mechanical expanding shoe
Cab:Open operator station.
Transmission:6-speed unsynchronized gear
Transmission details ...

1956 - 1958

Two-Cylinder 20 Series

Row-Crop tractor

Transmission

Manufacturer:

John Deere

Type:

unsynchronized gear

Gears:

6 forward and 1 reverse

Clutch:

dry

Oil capacity:

30 qts
28.4 L

Oil type:

0oF [-17oC]↑	: SAE 90
0oF [-17oC]↓	: SAE 80

0oF [-17oC] ↑

0oF [-17oC]↑	: SAE 90
0oF [-17oC]↓	: SAE 80

Speeds

Speeds
With 13.6-38 rear tires.

Hydraulics

Hydraulics Type:open center
Valves:1

Tractor hitch

Tractor hitch Rear Type:II

Power Take-off (PTO)

Power Take-off (PTO) Rear PTO:live
Rear RPM:540 (1.375)

Dimensions & Tires

Dimensions & Tires Wheelbase:93.7 inches
237 cm
Weight:6790 lbs
3079 kg
Front tire:6.00-16
Rear tire:12-38
Full dimensions and tires ...

1956 - 1958

Two-Cylinder 20 Series

Row-Crop tractor

John Deere 720 Tires

John Deere 720 Tires
Ag front:	6.00-16
Ag rear:	12-38

Dimensions

Dimensions
Wheelbase:	93.7 inches 237 cm
Length:	135.25 inches 343 cm
Width:	86.625 inches 220 cm
Height:	88.25 inches 224 cm
Weight:	6790 lbs 3079 kg

John Deere 720 attachments

John Deere 720 attachments front-end loader Attachment details ...

1956 - 1958

Two-Cylinder 20 Series

Row-Crop tractor

John Deere 45 Loader

John Deere 45 Loader
Height (to pin):	126 inches 320 cm
Lift to full height (at pin):	2000 lbs 907 kg

720 Serial Numbers

720 Serial Numbers Location:Right side of tractor in front of and below pulley.
photo of 720 serial number
1956:7200000
1957:7203420
1958:7217368

how to read serial numbers...

Electrical

Electrical Ground:positive*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 system:generator
Batteries:1 (diesel pony)
2 (gas/LP)
4 (diesel electric)
Battery volts:6