Allis Chalmers 720 Tractor

Manufacturer Allis Chalmers
Price -
Model 720
Equipment Type Sub-Compact Utility Tractors
Factory Simplicity

ENGINE DETAIL

The Allis Chalmers 720 tractor features a compact Onan CCKB 2-cylinder engine delivering 19.5 hp (14.5 kW) at a rated 3600 RPM, suitable for light agricultural tasks or landscaping. With a low displacement of 0.8L, the engine's 7:1 compression ratio and paper element air cleaner enhance fuel efficiency and engine longevity but may limit power under heavy loads. Its manageable oil capacity of 3.5 quarts allows for straightforward maintenance, making it ideal for small-scale operations or hobby farming.

Description Onan CCKB gasoline 2-cylinder air-cooled
Displacemen 49.8ci / 0.8L
Bore/Strok 3.25x3.00inches / 83x 76mm
Powe 19.5hp / 14.5kW
Air cleane paper element
Compressio 7:1
Rated RP 3600
Starter volt 12
Oil capacit 3.5qts / 3.3L

ALLIS CHALMERS 720 ENGINE

The Allis Chalmers 720 features an Onan 0.8L 2-cylinder gasoline engine, providing compact power suitable for small to medium agricultural tasks. Its lightweight design enhances maneuverability, though the limited horsepower may affect performance in heavy-duty applications. Ideal for residential or light commercial use, this tractor excels in efficiency but may struggle with larger implements or extensive acreage.

Description Onan 0.8L 2-cyl gasoline

TRANSMISSION

The Allis Chalmers 720 tractor features a hydrostatic transmission, providing smooth and continuous speed adjustment, which is ideal for tasks requiring precision such as tilling or mowing. With infinite forward and reverse capabilities across three ranges, operators can easily switch directions and adjust to different terrain types. However, its relatively low oil capacity of 6 quarts may necessitate more frequent maintenance checks to ensure optimal hydraulic functionality.

Typ hydrostatic
Gear infinite forward and reverse (3-range)
Oil capacit 6 qts/5.7 L

SPEEDS

Description With 29x12.00-15 R3 tires

ALLIS CHALMERS 720 TRANSMISSION

The Allis Chalmers 720 tractor features a hydrostatic transmission, providing seamless speed adjustments without the need for gear shifting, which enhances operational ease in various terrains. Advantages include improved maneuverability and operator comfort, especially in tasks requiring frequent stopping and starting, such as loader work or gardening. However, hydrostatic systems can be more complex and may require specialized maintenance compared to traditional gear-driven tractors, potentially increasing ownership costs over time.

Description hydrostatic

MECHANICAL

The Allis Chalmers 720 tractor features a two-wheel drive system, which is typically lighter and easier to maneuver on flat terrain but may struggle with traction in muddy or hilly conditions. The manual steering can offer a direct feel for the operator, although it may require more physical effort, particularly in tight turns or long hours of operation. An open operator station enhances visibility and ventilation, but it also exposes the operator to the elements and requires additional safety considerations.

Description Two-wheel drive Manual steering Open operator station

CAPACITY

Fue 3.8gal / 14.4L
Hydraulic syste 1.5gal / 5.7L

HYDRAULICS

Capacit 1.5gal / 5.7L
Pressur 500psi / 34.5bar
Pump flo 2.5gpm / 9.5lpm

TRACTOR HITCH

Rear Typ 0

POWER TAKE-OFF (PTO)

Rear PT independent
Clutc electric
Rear RP 2000
Front PT electric
Front RP 2000

ALLIS CHALMERS 720 TIRES

The Allis Chalmers 720 tractor features versatile tire sizes suited for agricultural (front: 4.00x12, rear: 8.00-16) and lawn/turf (front: 6.90/6.00-9, rear: 31x15.50-15) applications, providing adaptability from fieldwork to landscaping. The smaller front tires enhance maneuverability in tight spaces, while the larger turf rear tires reduce ground pressure, minimizing damage to soft surfaces. However, the limited power and size of the 720 might restrict its efficiency in heavy-duty tasks compared to larger models.

Ag fron 4.00x12
Ag rea 8.00-16
Lawn/turf fron 6.90/6.00-9
Lawn/turf rea 31x15.50-15

DIMENSIONS & TIRES

The Allis Chalmers 720 tractor features a compact wheelbase of 56 inches (142 cm), enhancing maneuverability in tight spaces, making it ideal for small fields or gardens. With a weight of 1300 lbs (589 kg), it provides sufficient stability for various farming tasks, though this lower mass may limit traction in heavy soil conditions. The front and rear tire dimensions (4.00x12 and 8.00-16) allow for a good balance between flotation and ground penetration, optimizing performance for light to moderate agricultural operations.

Wheelbas 56inches / 142cm
Weigh 1300lbs / 589kg
Front tir 4.00x12
Rear tir 8.00-16

720 SERIAL LOCATION

Description Right side of tractor frame

ELECTRICAL

Groun negative
Charging syste flywheel magneto
Charging amp 20
Battery volt 12
Battery A 53


Last Updated 2025-01-01
Stephen is a passionate tractor hobbyist with a deep-seated love for all things mechanized and agricultural. Growing up in a rural setting, he developed a fascination with these mighty machines that have played a crucial role in shaping the farming industry.

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