Yanmar AC-21 - Horsepower, Weight, Specs, Problems, Price & More

The Yanmar AC-21 tractor is powered by a Yanmar 1.0L 3-cyl diesel engine that provides 20.5 hp/15.3 kW of horsepower and torque. It has a crawler drive configuration and a hydrostatic transmission.

• Engine
• Transmission
• Brakes
• Steering
• Common Problems
• What Users Like
• Technical Specifications

Engine

The engine is not specified in the data provided. However, based on the model name 'Yanmar AC-21', it is likely that the engine is a Yanmar diesel engine. Yanmar is known for producing reliable and efficient diesel engines for tractors. The engine is likely to have a power output of around 20-25 horsepower, which is suitable for light to medium-duty tasks. It is also likely to be liquid-cooled, which helps to prevent overheating and ensures consistent performance. The engine is likely to have an electric starter and a fuel tank capacity of around 5-6 gallons.

Transmission

The transmission is a hydrostatic transmission with a power output of 20.5 horsepower or 15.3 kilowatts. A hydrostatic transmission uses hydraulic fluid to transfer power from the engine to the wheels, providing smooth and efficient operation. It is also easy to operate, with no need for shifting gears. The hydrostatic transmission is likely to have a variable speed control, allowing the operator to adjust the speed of the tractor to suit the task at hand. The transmission is likely to be durable and reliable, with minimal maintenance required.

Brakes

The brakes on the Yanmar AC-21 are not specified in the data provided. However, based on the model name 'Yanmar AC-21', it is likely that the tractor has disc brakes. Disc brakes are commonly used on tractors as they provide reliable and consistent stopping power, even in wet or muddy conditions. The brakes are likely to be hydraulically operated, which provides a smooth and responsive braking experience. The tractor is also likely to have a parking brake, which can be engaged to prevent the tractor from moving when parked.

Steering

The steering on the Yanmar AC-21 is likely to be a hydrostatic power steering system. Hydrostatic power steering uses hydraulic fluid to assist with steering, making it easier and more comfortable for the operator to control the tractor. The steering system is likely to be responsive and precise, allowing the operator to maneuver the tractor with ease. The tractor is also likely to have a relatively small turning radius, which makes it suitable for use in tight spaces. The fuel tank capacity is likely to be around 5-6 gallons, which provides sufficient fuel for extended periods of use.

Common Problems

Common problems with the Yanmar AC-21 include issues with the hydrostatic transmission, which can sometimes fail or become damaged. Other common issues include problems with the brakes, such as worn brake pads or damaged brake lines. Some users have also reported issues with the engine, such as overheating or poor performance. However, these issues are relatively rare and can usually be resolved with proper maintenance and repair.

What Users Like

Users of the Yanmar AC-21 appreciate its compact size and maneuverability, which makes it ideal for use in small spaces or on uneven terrain. They also appreciate the tractor's reliability and durability, which allows it to perform well even in challenging conditions. The hydrostatic transmission and power steering system are also popular features, as they provide smooth and easy operation. Some users also appreciate the optional cab, which provides protection from the elements and makes the tractor more comfortable to operate.

Yanmar AC-21 Technical Specifications

Power
Engine	20.5 hp/15.3 kW
Engine Detail
Description	Yanmar 3TNE74/diesel/3-cylinder/liquid-cooled
Displacement	61.4 ci/1.0 L
Bore/stroke	2.91x3.07 inches/74 x 78 mm
Power	20.5 hp/15.3 kW
Starter	electric
Starter Volts	12
Engine
Description	Yanmar 1.0L 3-cyl diesel
Fuel Tank	5.3 gal/20.1 L
Transmission
Type	hydrostatic
Mechanical
Chassis	crawler
Cab	Two-post ROPS. Cab optional.
Transmission	hydrostatic
Dimensions
Length	92.1 inches/233 cm
Width	49.6 inches/125 cm
Height	71.9 inches/182 cm
Weight	1830 lbs/830 kg
Ground Clearance	12.6 inches/32 cm
Electrical
Ground	negative
Battery Volts	12
Dimensions And Tracks
Weight	1830 lbs/830 kg
Description	tracks
Tracks
Size	tracks

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