Introduction
Yanmar AF-28 Compact Utility Tractor
The Yanmar AF-28 is a compact utility tractor produced between 1992 and 1997. It is designed to serve as a versatile machine for small-scale agricultural operations, landscaping, and property maintenance.
Engine and Performance
The tractor is powered by a liquid-cooled Yanmar 3TNS84 diesel engine. This 1.5-liter, three-cylinder powerplant delivers 27.6 hp (20.6 kW) at a rated speed of 2500 RPM. The engine utilizes an electric starting system with a 12V setup.
Transmission and Drivetrain
The AF-28 features a four-wheel-drive system paired with power steering to enhance maneuverability. Transmission options include a 16-speed shuttle shift or a 16-speed four-speed power shift, both incorporating a creeper range to accommodate a variety of operational speeds.
Hydraulics and PTO
The machine is equipped with a rear PTO type operating at 540 RPM (1.375 inch shaft). The rear hitch is configured as a JIS1 type, allowing for the attachment of various standard agricultural implements.
Dimensions and Chassis
With a wheelbase of 164 cm and a ground clearance of 33 cm, the tractor is built for stability on uneven terrain. It has an operating weight of approximately 1255 kg. The standard configuration includes an agricultural tire set (7-16 front and 12.4-24 rear) and a two-post Roll-Over Protective Structure (ROPS), with an optional cab available.
Conclusion
The Yanmar AF-28 is a reliable compact utility tractor suitable for general farm work and groundskeeping. Its combination of a 27.6 hp engine, selectable transmission types, and four-wheel drive makes it a practical choice for operators requiring a manageable yet capable workhorse.
Production Information of Yanmar, AF-28
- Compact Utility tractor
| Manufacturer | Yanmar |
|---|
Dimension and Tires Information of Yanmar, AF-28
| Front tread | 42.5 inches [107 cm] |
|---|---|
| Wheelbase | 64.6 inches [164 cm] |
| Weight | 2767 lbs [1255 kg] |
| Height | 77.4 inches [196 cm] |
| Length | 116.5 inches [295 cm] |
| Rear tread | 41.7 to 53.5 inches [105 to 135 cm] |
| Ground clearance | 13 inches [33 cm] |
| Width | 54.5 inches [138 cm] |
| Standard tires (ag) | Front: 7-16. Rear: 12.4-24 |
|---|
Engine Specifications of Yanmar, AF-28
- Yanmar 3TNS84
- Liquid-cooled
- Diesel
- 3-cylinder
| Power | 27.6 hp [20.6 kW] |
|---|---|
| Displacement | 91.29 ci [1.5 L] |
| Rated RPM | 2500 |
| Bore/Stroke | 3.31x3.54 inches [84 x 90 mm] |
| Starter volts | 12 |
| Starter | Electric |
Transmission Information of Yanmar, AF-28
Transmission variants 1
- Four gears in three ranges, plus creeper range with mechincal shuttle.
| Type | Shuttle |
|---|---|
| Gears | 16 forward and reverse |
Transmission variants 2
- Four power shift gears in three ranges, plus creeper range with power shuttle
| Type | Four-speed power shift |
|---|---|
| Gears | 16 forward and reverse |
- 16-speed shuttle
- 16-speed four-speed power shift
Mechanical Specs of Yanmar, AF-28
- Four-wheel drive
- Power steering
- Two-post ROPS. Cab optional.
Power Information of Yanmar, AF-28
| Rear PTO Type | 540 (1.375) |
|---|---|
| Rear PTO Type(optional) | 1293@2500 |
| Rear PTO Type(optional) | 963@2500 |
| Engine RPM | 551@2500 |
| Engine RPM(optional) | -694@2500 |
| Engine RPM(optional) | 756@2500 |
Three-Point Hitch of Yanmar, AF-28
| Rear Type | JIS1 |
|---|
Electrical System of Yanmar, AF-28
| Ground | Negative |
|---|---|
| Battery AH | 70 |
| Battery volts | 12 |
| Charging system | Alternator |
| Charging amps | 35 |
Where it sits
With 27 HP, the Yanmar AF-28 sits between AF-26 (25 HP) and AF-30 (29 HP) in Yanmar's range. Its power puts it in the 16th percentile of 1990s models in our database (2097 machines).
Frequently asked questions
How much horsepower does the Yanmar AF-28 have?
The Yanmar AF-28 delivers 27 HP.
What years was the Yanmar AF-28 produced?
The Yanmar AF-28 was produced in 1992-1997.
What engine does the Yanmar AF-28 have?
The Yanmar AF-28 is powered by a Diesel, 3-cylinder engine.
What transmission does the Yanmar AF-28 use?
The Yanmar AF-28 uses a Shuttle transmission.
How much does the Yanmar AF-28 weigh?
The Yanmar AF-28 weighs 2767 lbs [1255 kg].
Is the Yanmar AF-28 4WD?
The Yanmar AF-28 is available in 4WD.