Yanmar AC-21
Power
20 hp
Production
2004-2007
Engine
Diesel, 3-cylinder
Transmission
Hydrostatic
From the same series:
Introduction
Yanmar AC-21 Agricultural Crawler Tractor
The Yanmar AC-21 is an agricultural crawler tractor produced between 2004 and 2007. Belonging to the AC-18 series, this machine is engineered for field operations requiring high traction and stability.
Engine and Performance
The tractor is powered by a Yanmar 3TNE74 diesel engine. This 3-cylinder, liquid-cooled unit features a 61.4 cubic inch (1.0 liter) displacement with a bore and stroke of 2.91 by 3.07 inches. It produces 20.5 horsepower (15.3 kW), providing consistent power for its class.
Transmission and Drive
The AC-21 utilizes a hydrostatic transmission, allowing for precise control and variable speed adjustment without manual gear shifting. The crawler drive system ensures optimal weight distribution and traction on diverse agricultural terrains.
Dimensions and Operator Environment
The machine has an operating weight of 1,830 lbs (830 kg). It is equipped with a two-post Roll-Over Protective Structure (ROPS) as standard, with an optional cab available to enhance operator protection and comfort.
Electrical System
The tractor operates on a 12-volt electrical system, utilizing a negative ground configuration. Ignition is managed by an electric starter, ensuring reliable cold-weather starting.
Conclusion
The Yanmar AC-21 is a compact crawler tractor suited for agricultural tasks where high traction and low ground pressure are necessary. Its hydrostatic transmission and reliable diesel powerplant make it a functional choice for specialized field work.
Production Information of Yanmar, AC-21
- Agricultural Crawler tractor
| Manufacturer | Yanmar |
|---|
Engine Specifications of Yanmar, AC-21
- Yanmar 3TNE74
- Liquid-cooled
- Diesel
- 3-cylinder
| Power | 20.5 hp [15.3 kW] |
|---|---|
| Displacement | 61.4 ci [1.0 L] |
| Starter | Electric |
| Bore/Stroke | 2.91x3.07 inches [74 x 78 mm] |
| Starter volts | 12 |
Transmission Information of Yanmar, AC-21
Transmission variants 1
| Type | Hydrostatic |
|---|
Mechanical Specs of Yanmar, AC-21
- Two-post ROPS. Cab optional.
| Drive | Crawler |
|---|
Power Information of Yanmar, AC-21
| Engine | 20.5 hp [15.3 kW] |
|---|
Electrical System of Yanmar, AC-21
| Ground | Negative |
|---|---|
| Battery volts | 12 |
Where it sits
With 20 HP, the Yanmar AC-21 sits just above AC-18 (18 HP) in Yanmar's range. Its power puts it in the 5th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Yanmar AC-21 have?
The Yanmar AC-21 delivers 20 HP.
What years was the Yanmar AC-21 produced?
The Yanmar AC-21 was produced in 2004-2007.
What engine does the Yanmar AC-21 have?
The Yanmar AC-21 is powered by a Diesel, 3-cylinder engine.
What transmission does the Yanmar AC-21 use?
The Yanmar AC-21 uses a Hydrostatic transmission.