Allis Chalmers 720

Last Updated: June 2024

Overview

The Allis Chalmers 720 is a 2WD sub-compact utility tractor which was produced from 1975 to 1983. It features a 49.8 cubic inch two-cylinder gasoline engine with a power output of 19.5 horsepower at 3600 RPM and an air-cooling system. It comes equipped with a hydrostatic transmission having infinite (3-range) gears both in forward and reverse directions. The chassis is a 4x2 2WD configuration, and the tractor is steered manually. It sports an open operator station making it accessible but less protective against the elements. The tractor's wheels come with either agriculture or lawn/turf tires, providing versatility for different types of work. The electrical system is supported by a 12V, 53Ah battery, and starting is facilitated by an electric starter. The Allis Chalmers 720 was designed for a range of tasks and could be used with various attachments, made possible by its independent rear PTO with an electric clutch, operating at 2000 rpm.
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Key Specifications

Category: Utility, Sub-Compact

Power Output: 19.5

Transmission: Hydrostatic

Drive Type: 2WD

Operating Weight: 1299

Fuel Type: Gasoline

Allis Chalmers 720 vs. Similar Tractors

Power Output
Poor
Greater than 8% of similar tractors.
Operating Weight
Poor
Greater than 9% of similar tractors.

Technical Specifications

Engine

Manufacturer
Onan
Model
CCKB
Cooling Type
Air-cooled
Cylinder Orientation
Inline
Valve Configuration
-
Fuel Type
Gasoline
Induction Type
Naturally aspirated
Cylinders
2
Displacement (ci)
49.8
Bore (in)
3.27
Stroke (in)
2.99
Rated RPM
3600
Power Output (hp)
19.5

Transmission

Type
Hydrostatic
Forward Gears
Infinite (3-range)
Reverse Gears
Infinite (3-range)
Total Gears
-

Dimensions

Length (in)
82.7
Width (in)
47.6
Height (in)
42.9
Operating Weight (lb)
1299

Power Take-Off (PTO)

PTO Type
Rear PTO: Independent with electric clutch
PTO Speed 1 (rpm)
2000 (Front/Rear)
PTO Speed 2 (rpm)
-
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
4x2 2WD
Drive Type
2WD
Steering Type
Manual
Coolant Capacity (qts)
-
Front Tire Diameter (in)
12 (Ag)/10 (Lawn/Turf)
Front Tire Width (in)
4.00 (Ag)/8.0 (Lawn/Turf)
Rear Tire Diameter (in)
16 (Ag)/15 (Lawn/Turf)
Rear Tire Width (in)
8 (Ag)/12.00 (Lawn/Turf)
Front/Rear Rim Diameter (in)
-
Tire Type
Ag, Lawn/turf
Manufacture - End Year
1983
Hitch Type
-
Hitch Category
-
Hitch Position
-
Hitch Capacity (lb)
-
Operator Station Type
Open operator station
Starter Type
Electric
Brake Type
-
Hydraulic System Type
-