AGCO ST24A Tractor 22 hp Features, Specifications, and Performance Overview
AGCO ST24A Tractor 22 hp
The AGCO ST24A is a compact utility tractor in the AGCO ST series. You get a 3-cylinder Iseki diesel engine with a gross power of 22.5 horsepower at 2,600 RPM.
This makes the ST24A suitable for mowing, hauling, tilling, and other light to medium tasks on small farms and properties. This 4WD tractor has a wheelbase of about 5 feet and a width of roughly 4 feet.
The height to the top of the cab is 7 feet, which helps if you need to fit it in sheds or garages with limited space. You can expect a rear hitch with Type I capability.
The rear lift at the ends is 1,213 pounds (550 kg). Measured 24 inches behind, the lift capacity is about 882 pounds (400 kg).
These features support a variety of attachments like mowers and small loaders.
Below is a summary table of the key specs:
| Feature | Details |
|---|---|
| Series | AGCO ST Series |
| Model | ST24A |
| Engine Type | 3-Cylinder Iseki Diesel |
| Gross Horsepower | 22.5 hp (16.8 kW) |
| Rated RPM | 2,600 |
| Drive | 4WD |
| Wheelbase | 5 ft (2 m) |
| Width Outside Frame | 4 ft (1 m) |
| Height (Top of Cab) | 7 ft (2 m) |
| Rear Hitch Type | Category I |
| Rear Lift (at ends) | 1,213 lbs (550 kg) |
| Rear Lift (at 24″) | 882 lbs (400 kg) |
| Tire Size | Ag R1 |
Production & Identification
The AGCO ST24A Tractor 22 hp was designed to give you compact utility performance for smaller farms, landscaping, and property maintenance. You can identify this model by specific branding, production years, serial numbers, and factory details that set it apart from similar tractors.
| Topic | Key Details |
|---|---|
| Manufacturer / Brand | AGCO (distributed), Iseki (manufacturer) |
| Model Number / Series | ST24A, part of the ST-A Series, closely related to ST22A |
| Factory of Manufacture | Matsuyama, Japan |
| Years Produced | 2001–2004 |
| Original List Price | Not widely published; varied by dealer and region |
| Serial-Number Location | Typically found on main frame or chassis |
Manufacturer / Brand
The AGCO ST24A tractor is closely linked to two main companies. AGCO is the brand under which this model was sold and distributed.
AGCO is an American agricultural equipment company headquartered in Duluth, Georgia. Your ST24A, while carrying AGCO’s badge, was actually built by Iseki, a leading Japanese machinery maker.
AGCO and Iseki have a history of collaboration, with Iseki producing compact and utility tractors for AGCO’s distribution in North America and other markets. Many parts and mechanics are shared between AGCO and Iseki-branded models.
The ST24A is based on similar specifications as Iseki’s own compact tractors, ensuring reliable service and global parts availability.
Model Number / Series
The model number for your tractor is ST24A. It belongs to the AGCO ST-A series of compact utility tractors.
This series includes models like the ST22A, which is closely related and only slightly differs in power and features. ST24A stands for “Sub-Compact Tractor, 24 hp, Series A.”
You may notice similar design traits and interchangeable components across the ST-A Series, especially with the slightly smaller ST22A. This model sits between the lower-powered ST22A and higher-powered options in AGCO’s line-up.
Clear markings on the hood or data plate will specify the ST24A designation, helping avoid confusion with other ST or ST-A tractors.
Factory Of Manufacture
Your AGCO ST24A tractor was manufactured in Matsuyama, Japan. This city is home to one of Iseki’s main tractor production facilities.
Iseki is known in the agricultural sector for its strict quality controls and advanced production techniques. Japanese-built tractors like the ST24A are favored for reliability, consistent assembly quality, and durable components.
AGCO leveraged Iseki’s established expertise to bring a dependable compact utility tractor to the market. Every ST24A shares assembly origins with other Iseki-made models, ensuring consistency across production runs and making it easier to source compatible parts.
Years Produced
The AGCO ST24A was produced from 2001 to 2004. These years mark the span during which this specific model was available through AGCO dealerships.
After 2004, AGCO introduced updated or successor models as part of ongoing product refreshes. During its production window, the ST24A replaced or supplemented previous compact models.
It remained competitive thanks to its strong Iseki layout, efficient diesel engine, and utility-focused design. If your tractor falls within serial number ranges from these years, you have an original ST24A.
Limited runs and clear production dates help maintain resale value and make it easier to match manuals and replacement parts.
Original List Price (Launch Year)
The exact original list price of the AGCO ST24A at launch isn’t widely published, and it often varied by country, dealer, and optional features. At launch, compact utility tractors like the ST24A generally fell in the range of $10,000 to $15,000 USD.
These prices reflected included features such as a 22.5 hp diesel engine and hydrostatic transmission. Additional equipment or attachments could raise the total purchase price.
If you are researching market value today, condition, hours, and completeness of attachments greatly affect selling price due to limited original pricing data.
Serial-Number Location
You can find your AGCO ST24A tractor’s serial number stamped onto the main frame or chassis. This is usually located on the right or left side of the frame, behind the front wheel or near the engine mount area.
The serial number is critical when ordering replacement parts, checking warranty history, or verifying the age of your tractor. On some units, a plate riveted to the dash or firewall area may display the serial number clearly.
If your identification plate is missing or damaged, look for stamped numbers on the frame itself. Always copy the serial number carefully, as it can help you distinguish your ST24A from other models like the ST22A.
Engine Specifications
The AGCO ST24A uses a 3-cylinder diesel engine designed for steady and efficient operation in tough conditions. You get a balance of power, durability, and low fuel use that makes this tractor well-suited for different small farm and maintenance tasks.
Engine Make & Model
Your AGCO ST24A is powered by an Iseki-branded engine. Iseki is a Japanese engine and tractor manufacturer known for making reliable and efficient diesel engines for compact and subcompact tractors.
The specific engine model in the ST24A is the Iseki 1.1L 3-cylinder diesel. This engine is water-cooled and is designed to provide consistent power output while keeping emissions low.
You can expect steady performance from this engine, especially in tough or changing field conditions.
Fuel Type & Emissions Tier
The ST24A runs on diesel fuel. Diesel engines are known for longer service intervals and better fuel economy than gasoline engines in similar horsepower ranges.
While the ST24A was designed before the latest strict emissions standards for compact tractors, it still uses a modern diesel setup that helps reduce smoke and odor. There are no advanced emissions controls like DEF or particulate filters, meaning easier maintenance for you.
You should use standard on-road diesel fuel. Ultra-low sulfur diesel is safe, but always follow your operating manual to avoid fuel system issues.
Cylinders / Displacement
This tractor comes with a 3-cylinder engine, which provides smoother operation and better torque at low speeds compared to 2-cylinder options. The total engine displacement is 1.1 liters, or 68.5 cubic inches.
A table helps clarify this:
| Feature | Spec |
|---|---|
| Cylinders | 3 |
| Engine Displacement | 1.1 L (68.5 cubic inches) |
| Bore x Stroke | 78 mm x 78 mm (3.08″ x 3.07″) |
Having three cylinders helps balance vibration and improves efficiency in the rpm range most used for typical tractor work.
Rated Horsepower (Gross & Net)
The AGCO ST24A engine produces a rated gross horsepower of 22.5 hp (16.8 kW) at 2600 rpm. This rating is measured at the flywheel, not considering driveline losses.
The PTO (power take-off) horsepower, also known as net horsepower, is about 19 hp (14.2 kW). PTO horsepower reflects the actual usable power you can transfer to implements like mowers, tillers, or other attachments.
Key numbers for reference:
- Gross Horsepower: 22.5 hp @ 2600 rpm
- PTO Horsepower: 19 hp
- Rated RPM: 2600
This output is appropriate for general property maintenance, small-acreage chores, and utility work.
Peak Torque (Nm @ rpm)
Peak torque is not always published for compact tractors like the ST24A, but engines of this size and type generally produce their maximum torque in the mid- to low-rpm range. With a 1.1L displacement at 2600 rpm rated speed, you can expect peak torque in the range of 50-60 Nm (37-44 lb-ft), likely occurring at around 1700-2200 rpm.
This is typical for small 3-cylinder diesel tractor engines and means good pulling power at slow engine speeds, which is important for field work. If you notice the tractor pulling hard and still holding rpm during heavy operation, that’s the low-end torque working for you.
Compression Ratio
The compression ratio for the Iseki 1.1L diesel engine is typically around 21:1. High compression is needed in diesel engines to ignite the fuel-air mixture without a spark plug.
This high compression gives you more efficient fuel use, higher torque at low speeds, and lasting engine durability. For the user, you don’t have to do anything special, but you should avoid using gasoline or off-grade fuels that could damage a diesel engine with this high ratio.
Cooling System & Capacity
The engine uses a water-cooled system to regulate temperature under load. Water cooling is more effective than air cooling for small engines under steady loads, especially in compact tractors working in hot or dusty conditions.
The radiator and water pump move coolant through the engine and radiator fins, keeping the engine at optimal temperature. The coolant capacity is about 3 to 4 liters (roughly 1 gallon), though you should always check your manual for precise numbers.
Check coolant levels regularly, use the correct coolant type, and keep radiator fins clear of debris for best life and reliability.
Engine Specifications Summary Table
| Subsection | Details |
|---|---|
| Engine Make & Model | Iseki 1.1L 3-cylinder diesel |
| Fuel Type & Emissions Tier | Diesel; standard diesel fuel; pre-Tier 4 emissions (no DEF or particulate filter) |
| Cylinders / Displacement | 3 cylinders; 1.1L (68.5 cu in); 78mm x 78mm bore x stroke |
| Rated Horsepower | 22.5 hp (gross) @ 2600 rpm; 19 hp (PTO/net) |
| Peak Torque | Estimated 50-60 Nm (37-44 lb-ft) @ 1700-2200 rpm |
| Compression Ratio | Around 21:1 |
| Cooling System/Capacity | Water cooled; approx. 3-4 liters (1 gallon) coolant capacity |
Power Take-Off (PTO)
The AGCO ST24A tractor offers a reliable PTO system, supporting both rear and mid-mount applications. This setup allows you to connect a variety of implements and operate them efficiently for different tasks.
| Feature | Specification / Details |
|---|---|
| Claimed PTO Horsepower | ~22 hp (engine), less at PTO |
| PTO Type | Rear (independent), Mid (independent, optional) |
| Speeds | 540 rpm (rear/mid) |
| PTO Shaft Size | 1.375 inches (rear) |
Claimed PTO Horsepower
The engine of the AGCO ST24A is rated at 22 horsepower. However, the actual PTO horsepower is less because some power is lost through the transmission.
On this tractor, you can expect the PTO to deliver slightly less power than the engine rating—typically around 18 to 19 horsepower at the rear PTO. This is enough to run equipment like rotary mowers, tillers, and sprayers.
Power at the PTO is important for matching the right implement size to your tractor. PTO horsepower ratings are one of the key specifications you should check before buying or using new attachments.
PTO Type (Independent / Live / Economy)
The AGCO ST24A uses an independent PTO system. This means the PTO operates separately from the transmission and can be turned on or off with a dedicated control, no matter if the tractor is moving or stopped.
Independent PTOs are user-friendly and make it easier to work with equipment that needs to be engaged or disengaged quickly. Both the rear and mid-mount PTOs are independent.
The mid-mount PTO, which is optional, lets you run belly mowers and other attachments under the tractor. Having both rear and mid PTO options lets you handle a wider range of jobs.
The independent design also gives you safer and more convenient control, especially when working with tools that start or stop under load.
PTO Speeds (540 / 1 000 rpm)
This tractor provides a 540 rpm PTO speed for both the rear and mid PTOs. The 540 rpm speed is the most common and is compatible with the majority of implements designed for compact tractors.
You can connect equipment like mowers, tillers, or power rakes that require a steady 540 rpm drive speed. There isn’t a 1,000 rpm option on this model, which means heavy-duty equipment requiring higher speeds will not be compatible.
The rear PTO uses a 1.375-inch shaft size. The mid-mount PTO (if equipped) also runs at the standard 540 rpm.
Make sure your implement is rated for 540 rpm for safe operation.
Transmission & Drivetrain
The AGCO ST24A features a robust drivetrain, tailored to balance power and usability for a wide range of work. Core elements include the transmission type, the gear options, speed capability, drive system, and specialized locking and drive features to improve traction.
Transmission Type (Syncro, Powershift, CVT, HST)
The AGCO ST24A is equipped with both a gear transmission and an optional hydrostatic transmission (HST) on certain models. The hydrostatic transmission allows you to change speed without shifting gears, which is helpful for tasks where you need to adjust speed often, like loader work or mowing.
With the HST, you simply push the pedal to go faster or slower. The gear transmission option provides a more traditional manual setup.
You select from fixed gear choices, which are ideal for consistent ground speeds and repetitive field tasks. Both systems are durable and meant for easy operation and long-term use.
Number Of Gears / Ranges
If you use the gear transmission, there are six forward gears and two reverse gears. This range gives you flexibility for slow work in tough spots and faster speeds for moving between jobs.
These gear choices let you pick the best ratio for power or speed depending on the task. Hydrostatic models do not use gears in the traditional sense.
Instead, you have infinite speed choices within their range. This lack of set gears makes it very simple to control the tractor speed while working or turning.
Whether you choose gear or HST transmission, you have the gear ratios or speed range to handle many types of agricultural jobs.
Top Transport Speed
The top transport speed for the AGCO ST24A typically reaches up to 12-15 km/h (about 7-9 mph). This is suitable for most small farm and landscaping operations where moving quickly between different points is important, but not at highway speeds.
This speed range lets you move equipment efficiently across your property. While not as fast as larger tractors, it improves productivity when relocating the tractor from one work area to another.
Both gear and hydrostatic models offer similar top speeds. Acceleration can feel smoother with HST.
Drive (2WD / 4WD / AWD)
The AGCO ST24A comes standard with four-wheel drive (4WD). This allows you to manage uneven, slippery, or loose terrain much more effectively than two-wheel drive tractors.
Four-wheel drive offers you more traction when driving in mud, snow, or on slopes. The tractor can switch between 2WD for lower fuel use on flat, dry ground, and 4WD when extra grip is needed.
This makes it flexible for changing field or yard conditions. Four-wheel drive also helps keep power delivered evenly to all wheels, reducing wheel slip under load.
Differential-Lock & Final Drives
A mechanical differential lock is part of the AGCO ST24A drivetrain. You lock both rear wheels together for increased traction when one wheel is slipping.
This is important when working in muddy fields, soft ground, or even snow. Final drives deliver the engine’s power to the wheels efficiently and reliably.
These are built strong to handle repeated heavy use and transmit the tractor’s horsepower with minimal loss. Using features like the differential lock allows you to keep moving forward in tough conditions.
AGCO ST24A Transmission & Drivetrain Overview
| Feature | Details |
|---|---|
| Transmission Types | Gear transmission (6F/2R) or Hydrostatic (HST) |
| Gears / Speed Range | 6 forward, 2 reverse (gear); infinite speeds within range (HST) |
| Top Transport Speed | 12-15 km/h (7-9 mph) |
| Drive | Four-wheel drive (4WD), switchable to 2WD |
| Differential Lock | Mechanical differential lock standard |
| Final Drives | Heavy-duty final drives for power delivery and durability |
| Utility | Optimized for flexibility, traction, and adaptability across multiple farm and landscaping tasks |
Steering & Brakes
AGCO ST24A offers an efficient steering system, dependable brakes, and practical features for ease of use in the field. These elements ensure safe handling and control even under demanding conditions.
Steering System (Hydrostatic / Power-Assisted / Mechanical)
You get power steering with the AGCO ST24A, which means steering is smooth and light, even with four-wheel drive engaged. The system uses hydraulics to help you turn the wheel, making it much easier to maneuver the tractor at slow speeds or when the loader is attached.
There is no manual or mechanical-only steering to worry about. Hydrostatic steering reduces the effort needed in tight turns.
This setup helps if you often work in areas with lots of obstacles. It also makes long working hours less tiring, as less force is needed for steering.
Power-assisted steering is not only a comfort feature but also a safety benefit, reducing the chances of sudden, abrupt movement when you turn. Unlike older tractors with only manual or mechanical steering, you will not face resistance when making sharp turns, even with heavy loads.
This system is standard on many compact modern tractors for reliability and control.
Turning Radius (With Brakes)
The four-wheel drive and compact design allow for a relatively tight turning radius. When you use the independent brakes together with the steering, you can make even sharper turns, which is important when working around fences, trees, or small plots.
Applying the brake on one side (brake-assisted turning) brings the inside rear wheel to a near stop, helping the tractor pivot more sharply. This feature is helpful in places where space is limited, such as fruit orchards or landscaping tasks.
You will notice the turning radius improves when using brake assist, making it easier to maneuver in challenging areas. This is a key feature for operators who need precision turning or frequently work in tight spaces.
Service Brakes (Wet Disc, Dry Drum, etc.)
AGCO ST24A uses wet disc brakes for service braking, located on the rear axle. Wet disc brakes are enclosed and use oil for cooling, which reduces wear and increases life compared to dry drum brakes.
This system offers consistent braking performance, even during long days in the field. Wet disc brakes are less likely to suffer from fade when used repeatedly or in rough conditions.
Maintenance requirements are lower since the enclosed nature of the brakes keeps dust and debris out. This leads to safer stopping and more predictable brake response, especially important when towing implements on slopes or uneven ground.
You will also find split left and right brake pedals, letting you control each side independently for better handling when turning or working in uneven terrain.
Parking Brake Type
A mechanical parking brake is fitted to the ST24A. It uses a lever that you can easily engage from the operator’s seat.
This brake holds the tractor in place when parked on flat or sloped surfaces, adding safety during maintenance or when stopped with a load. Activation is straightforward—simply pull and lock the lever to engage.
The parking brake is separate from the regular service brakes so there’s no risk of overlap or confusion. Unlike older hand-lever systems, the mechanism in the ST24A is designed to prevent accidental release.
This type of parking brake reduces the chance of rolling accidents and works reliably over time with minimal need for adjustment. It’s a simple but effective safety feature, important for daily use.
| Feature | Type/Description | Benefits | Notes |
|---|---|---|---|
| Steering System | Power (Hydrostatic) | Light, easy steering; less fatigue; tight control | Standard for this model |
| Turning Radius (With Brakes) | Tight, brake-assisted turning | Sharper turns in confined areas; increased maneuverability | Good for small farms, landscaping |
| Service Brakes | Rear wet disc brakes | Low maintenance; strong, consistent braking | Keeps debris out; less wear |
| Parking Brake | Mechanical lever, independent system | Easy to activate; secure parking on slopes | Prevents unexpected movement |
| Brake Pedal Arrangement | Split left and right pedal | Improved control for precision turning | Useful for tricky terrain |
| Cruise Control | Not standard on base model | – | Check specific tractor configuration |
Cab & Operator Station
Comfort and visibility play a big role when using the AGCO ST24A tractor. Features like ROPS protection, seat design, and climate controls directly affect your experience during long work hours.
ROPS / Cab Option
The AGCO ST24A comes standard with a Roll Over Protective Structure (ROPS). You do not have a full enclosed cab as a factory option on this compact tractor.
The open operator station features an overhead bar to protect you if the tractor tips. ROPS provides safety in hazardous terrain, which is important while using loader attachments or pedestal-mount quick-attaching loaders.
You can add an aftermarket canopy or sunshade for weather protection. Some owners add soft cabs or vinyl enclosures from third-party suppliers.
These are not as sturdy as factory cabs but help shield you from wind and light rain. If loader work is your main use, the simple ROPS system provides good visibility and easy on-off access.
Climate Control (A/C, Heater, Filter)
The AGCO ST24A does not come with factory-installed climate control options such as air conditioning or heat. With its open ROPS configuration, you have exposure to outside weather.
You will not find a built-in cab air filter or pressurization system on this model. If you install a third-party enclosure, some kits may allow you to add a small electric heater or fan.
These are typically 12V units with limited capacity. They may offer light frost protection for early mornings, but are not designed for full climate control.
Practical climate comfort depends on clothing and weather. You may want to add aftermarket accessories, such as a sun canopy or portable heater if you use your tractor year-round.
Seat & Suspension
A cushioned, adjustable seat is included for operator comfort. The seat back is medium height and can slide forward or back to match your leg length.
There is basic spring suspension to absorb bumps during loader operation or field work. The seat has vinyl covering for easy cleaning.
Armrests are not standard, but some aftermarket options are available if you want to add more support. There is no air-ride or advanced suspension system, but the included setup is enough for moderate daily chores.
For loader work or long mowing jobs, making proper seat adjustments is important for reducing fatigue. The control levers and loader joystick are located close to the seat, so you do not have to stretch or reach uncomfortably.
Noise Level (dB A @ Operator Ear)
The AGCO ST24A, like most compact utility tractors with open operator stations, produces engine and drivetrain noise that you will notice while operating. There is no factory noise reduction package or cab insulation.
At typical engine speed during loader operation or field work, the noise at your ear can range between 85–90 dB(A). This level is similar to riding lawn tractors or other small diesels.
You can reduce the impact by wearing hearing protection, especially if using the tractor for several hours at a time. Loader hydraulics and implements can add to the noise level.
If you install a canopy or soft cab, these may reduce noise slightly, but do not eliminate it.
Operator Station Feature Table
| Feature | AGCO ST24A Standard | Factory Option? | Aftermarket Availability | Key Details |
|---|---|---|---|---|
| ROPS | Yes (Foldable) | Yes | Canopy/sunshades, soft enclosures | Safety structure; good loader visibility |
| Enclosed Cab | No | No | Vinyl soft cabs, windshields | Some weather protection possible |
| Climate Control (A/C) | No | No | Portable electric fans/heaters | Limited aftermarket options for heating/cooling |
| Seat (Adjustable) | Yes | Yes | Armrest and comfort seat upgrades | Spring suspension, vinyl, easy cleaning |
| Suspension | Spring type | Yes | No air-ride available | Basic comfort for loader and field work |
| Noise Level (dB A) | 85–90 dB(A) | No | Slight reduction with soft cab/canopy | Use ear protection for prolonged use |
| Loader Interface | Compatible | Yes | Yes | Loader controls easy to access from the seat |
| Loader Bucket Capacity | Varies by loader model | – | – | Typically ranges from 500 to 1000 lbs (est. values) |
Hydraulics
The AGCO ST24A tractor uses an open center hydraulic system, providing efficient operation for many attachments and tasks. Understanding the system type, pump flows, system pressure, and remote valve options can help you set up and maintain the tractor for optimal hydraulic performance.
System Type (Open-Center / Closed-Center / PFC)
The hydraulic system on the AGCO ST24A is an open center design. In open center systems, the hydraulic fluid flows in a continuous loop from the pump, through the control valves, and back to the reservoir unless a valve is activated.
When no hydraulic function is being used, the oil flows with minimal restriction, helping reduce heat build-up. You do not have load-sensing or pressure-flow compensating features on this system.
Whenever you operate a hydraulic function, the pump’s output is directed to that function. This makes open center systems simple to maintain, cost-effective, and reliable.
For most utility tractor tasks such as loader work, mowing, or tilling, the open center approach works well. Open center systems can be less efficient at higher demands compared to closed center or pressure-flow compensating systems.
For the ST24A’s size and horsepower, this design gives you more than enough capability with straightforward reliability.
Implement Pump Flow (L min⁻¹)
The implement pump flow in the AGCO ST24A is approximately 20.1 liters per minute (L/min), or 5.3 gallons per minute (gpm). This flow rate lets you use most implements and attachments meant for compact tractors.
It provides steady power to run functions like loader arms, rear three-point hitch attachments, and hydraulic motors for smaller equipment. A flow of 20.1 L/min is enough for responsive loader movement, efficient lifting, and consistent implement action in day-to-day use.
The output may not match larger agricultural tractors, but for landscaping, small acreage work, or property maintenance, it is practical and easy to manage. Always check if attachments you plan to use fall within the pump flow rating.
Exceeding it may cause slow operation or even overload the hydraulic system.
Steering Pump Flow (If Separate)
On the AGCO ST24A, the steering hydraulic circuit is not separated from the main implement pump; both systems share the same hydraulic pump and oil reservoir. This means that your steering and implement hydraulics draw from one source.
When steering and implement functions are used at the same time, flow is divided. The system is sized so that routine combined use does not cause slowdowns in steering response or implement speed.
Integrated flow keeps the system simple. Heavy use of both steering and implements at once may cause slight momentary reductions in performance.
Total Combined Flow
Since the steering and implement circuits share a hydraulic pump, the total combined flow is the same as the implement pump: 5.3 gpm (20.1 L/min). All hydraulic operations on the tractor—whether for steering, lifting, or powering attachments—draw from this flow.
If you operate multiple hydraulic functions at once, each will get less flow, and may run slightly slower. This isn’t usually a problem for routine tasks but is important to remember if you are using demanding implements and steering at the same time.
System Pressure (bar / psi)
The AGCO ST24A’s open center system runs at a system pressure typical for compact utility tractors. Normal operating pressure is about 140-180 bar (2000–2600 psi).
This pressure allows for strong lifting capability and operation of common tractor implements. Cylinder size and mechanical leverage work together with this pressure to ensure you can lift, push, or pull moderate loads.
If you notice slower operation or weak hydraulic functions, checking system pressure with a gauge can help diagnose problems like worn pumps or leaking valves. Always use a calibrated gauge and follow the tractor’s service instructions if you need to check or adjust system pressure.
Remote Valves (Number & Type)
The AGCO ST24A typically offers one or two remote valves, depending on the configuration. These can be single-acting or double-acting valves.
Double-acting valves are common, letting you control both extension and retraction of hydraulic cylinders. Remote valves are useful for rear implement operation or for using front loader attachments that need hydraulic control.
Check your specific tractor build to see how many remotes it has, as some units may have only one from the factory, with a second available as an option. With double-acting remotes, both directions of movement are powered, giving you precise and reliable control over attached implements.
| Hydraulic Feature | Description | Value / Details |
|---|---|---|
| System Type | Hydraulic circuit design | Open center |
| Implement Pump Flow | Oil flow rate to implements | 20.1 L/min (5.3 gpm) |
| Steering Pump Flow | Oil flow for steering (if separate) | Shared with implement circuit |
| Total Combined Flow | Total flow supplied to all hydraulics | 20.1 L/min (5.3 gpm) |
| System Pressure | Hydraulic operating pressure | 140-180 bar (2000–2600 psi) |
| Remote Valves | Number and type of rear hydraulic remotes | 1–2, single or double-acting |
Three-Point Hitch (3PH)
The AGCO ST24A tractor is built with a three-point hitch system that lets you attach a wide variety of implements. Its performance depends on the hitch category, lift capacity, and control features.
| Feature | Details |
|---|---|
| Hitch Category | Category I |
| Lift Capacity @ Ball Ends | 1,213 lbs (550 kg) |
| Draft/Position Control | Position Control |
| Top-Link Sensing | No |
Hitch Category (1 / 1N / 2 / 3)
The AGCO ST24A is fitted with a Category I three-point hitch. Category I hitches are common on compact and utility tractors ranging from 20 to 45 horsepower.
This means you can use the ST24A with a large selection of implements, such as rotary cutters, tillers, and box blades, intended for this hitch size. Category I pins and arms typically measure 7/8 inch in diameter.
You will find it simple to attach and detach equipment with Category I specifications. The Category I system on this tractor is designed for lighter to medium-duty work but handles almost all jobs suited to a compact tractor in the 22 hp range.
Always check that your implements are compatible with Category I hitches.
Lift Capacity @ Ball Ends
The three-point hitch on the AGCO ST24A offers a lift capacity of up to 1,213 lbs (550 kg) at the ball ends. This rating tells you the maximum weight your tractor can raise and safely hold at the ends of the hitch arms—where your implements will attach.
A higher lift capacity allows you to use heavier and bulkier attachments, such as heavier seeders or soil-working tools. However, you must not exceed the rated amount to avoid damaging the tractor or risking loss of control.
The lift capacity is measured at the ball ends, which means it is the actual lifting strength the hitch provides at the point where your tool or implement will be carried.
Draft / Position Control
The AGCO ST24A comes with position control for its three-point hitch. Position control lets you set the implement at an exact height or depth and keeps it steady at that position.
This feature is useful for tasks like mowing or grading, where a consistent depth or height is important. The tractor does not offer true draft control (which automatically adjusts the hitch based on resistance from the soil), so for ground-engaging implements, you will need to adjust the lift manually.
Use the control lever near the driver’s seat to easily raise or lower your attachment and repeat settings for consistent results in different jobs.
Top-Link Sensing (Yes/No)
The AGCO ST24A does not have top-link sensing in its three-point hitch system. Top-link sensing is a feature usually found on larger or more advanced tractors and is used with draft control systems to detect changes in implement draft load.
Since the ST24A does not provide this option, you must rely on manual adjustments and position control while operating implements. For most users of compact tractors, the lack of top-link sensing is typical and does not limit the performance for lighter and mid-duty tasks.
Axles & Load Limits
Understanding the axles and load capacities of the AGCO ST24A Tractor helps you make better decisions about safety and performance. These details are important when working with heavy loads, especially in different field conditions.
| Specification | Value | Notes |
|---|---|---|
| Maximum Front-Axle Load | Not Listed | Manufacturer specification unavailable |
| Maximum Rear-Axle Load | Not Listed | Manufacturer specification unavailable |
| Rear Lift at Ends | 550 kg (1213 lbs) | At the ends of the 3-point linkage |
| Rear Lift at 24″ | 400 kg (882 lbs) | 24 inches behind lift ends |
| Final-Drive Type | 4WD | Ensures better traction |
Maximum Front-Axle Load (kg)
The specific front-axle load for the AGCO ST24A is not publicly listed by official sources. This value is important because it defines how much weight the front axle can support, including the weight of any attachments or front-mounted implements.
You should always avoid exceeding the front-axle limit to reduce the risk of axle failure. If you intend to use heavy front attachments, it is good practice to consult your dealer or manufacturer for actual limits.
Proper ballast and weighting improve balance when using front-end loaders or other equipment. Keeping loads within safe limits also helps prevent excessive tire wear or damage to the axle and steering system.
Maximum Rear-Axle Load (kg)
Detailed rear-axle load figures for the AGCO ST24A are not published by the manufacturer. However, the rear lift capacity at the ends of the 3-point hitch is 550 kg (1213 lbs), and at 24” behind the lift point, it is 400 kg (882 lbs).
These values tell you how much the hitch can safely raise and transport. Staying under the lift limits is critical for both safety and effective operation.
Excess weight can strain the hydraulic system and cause rear instability, especially when lifting equipment or transporting heavy loads across the field. Regularly check your implement weights and use suitable counterweights as needed.
Final-Drive Type
The AGCO ST24A features a four-wheel-drive (4WD) final-drive system. This design improves power transfer and traction, especially on uneven or slippery terrain.
4WD is valuable for stability when carrying heavy loads and for better control in challenging field conditions. With 4WD, power is distributed to both the front and rear axles, helping you avoid getting stuck or losing control in mud, wet grass, or loose soil.
This robust design also helps protect the drivetrain when operating near the upper end of capacity or while moving across uneven ground. Always engage 4WD before tackling difficult terrain or hauling heavy equipment.
Tires & Track Options
Tire selection on the AGCO ST24A is important for getting the right grip, stability, and surface protection for your specific needs. Different sizes and types are available for the front and rear, and you can add special kits for more traction or flotation.
Standard Front Tire Size (Ag / Turf / Industrial)
You can choose from several types of front tires on the AGCO ST24A. The Ag (R1) tires give better grip in muddy fields, while turf tires are gentle on grass.
Industrial (R4) tires work well on rough or mixed surfaces. The front Ag tire size for this tractor is commonly 6-12.
Turf and industrial sizes may vary slightly, so check with your dealer for exact options.
Here is a closer look at some front tire features:
- Ag (R1) Tire Size: 6-12
- Turf Tire Size: Similar, but width can vary
- Industrial (R4) Tire Size: Wider tread for stability
Choosing the right front tire matters for steering and protecting your fields or lawns. Make sure to pick the type that fits your main jobs.
Standard Rear Tire Size
Rear tires carry most of the tractor’s weight and provide the main traction. The AGCO ST24A usually comes with Ag (R1) rear tires sized 9.5-16.
This size helps to balance stability and pulling strength, especially in soft soil. Turf and industrial tires can also be fitted, and they will be close in diameter but may have different tread patterns for different uses.
Rear tire options include:
- Ag (R1): 9.5-16, deep lugs for traction
- Turf: Similar diameter, often flatter profile to reduce turf damage
- Industrial (R4): Tough build, suitable for rocky or hard surfaces
Proper rear tire selection is important for carrying heavy implements and working on different surfaces.
Optional Duals / Tracks / Flotation Kits
For fields with special needs, you can add options like duals or flotation kits. Dual rear wheels improve traction and lower soil compaction, which is good for loose or wet ground.
Flotation kits use wider tires to help the tractor “float” over soft surfaces like sand or mud. While the ST24A is not built for full track systems, it is sometimes possible to fit aftermarket tracks for short-term use or specialty jobs.
Optional equipment includes:
- Dual Tire Kits: Fit extra tires on each rear axle for more surface area and grip
- Flotation Kits: Wide or low-profile tires reduce soil damage and work well in muddy fields
- Aftermarket Tracks: Rare, mainly for specific field jobs but less common on compact models
| Option | Tire Type / Size | Purpose | Note |
|---|---|---|---|
| Front Tire (Ag) | 6-12 | General farming, traction in soil | Standard option |
| Front Tire (Turf) | Varies (6-12 range) | Protects grass, lawns | Optional |
| Front Tire (Ind.) | Wider, R4 pattern | Mixed or construction use | Optional |
| Rear Tire (Ag) | 9.5-16 | Main traction, field work | Standard |
| Rear Tire (Turf) | Similar diameter | Reduces surface marking | Optional |
| Rear Tire (Ind.) | Wider, R4 pattern | Durable, stable | Optional |
| Duals | Same as standard | Lowers soil compaction, adds stability | Requires special kit |
| Flotation Kit | Wide/low-profile | Works in sand, mud, wet areas | Optional upgrade |
| Aftermarket Tracks | Specialist tracks | Short-term specialty jobs | Not common, may require mods |
Dimensions & Weight
The AGCO ST24A tractor uses a compact chassis with a focus on stability, tight maneuvering, and efficient ground use. You benefit from a strong, well-balanced tractor that fits into tight spaces while delivering reliable performance across a range of tasks.
Wheelbase
The wheelbase of the AGCO ST24A is 59.9 inches (152 cm). This distance between the front and rear wheels affects stability while operating on uneven ground and when carrying loads.
A shorter wheelbase like this means tighter turning, so you can navigate small properties and confined work sites easily. It also reduces the tractor’s overall size, making transport and storage less demanding.
The compact chassis makes it ideal for landscaping, small farm work, and property maintenance. You will notice steady handling, especially when using front-end loaders or other attachments.
Stability is improved even when driving up slopes or over rough terrain. The wheelbase also helps keep weight distributed evenly, which contributes to traction and overall performance, especially on softer soil.
Overall Length
The AGCO ST24A measures 105.5 inches (267 cm) in total length. This measurement is from the front end to the back of the tractor, not including any attached implements.
A shorter length allows you flexibility in maneuvering around buildings, trees, and obstacles. If you work in greenhouses, barns, or other small environments, this can save you time and effort.
This compact size also makes it easier for you to load the tractor onto trailers or park it in smaller garages. When paired with the tight turning radius from the short wheelbase, your job gets easier in challenging areas and driveways.
Overall Width (Minimum Tread)
The minimum width of the AGCO ST24A is 39.4 inches (100 cm). This is measured from the outermost points of the tires at their closest tread setting.
With a width just over three feet, you can move through narrow gates, vineyards, or row crops without damaging plants or structures. This is especially useful for specialty crop farms and homeowners with tight landscaping projects.
The narrow track boosts your agility but keeps the tractor’s center of gravity low. That helps reduce the risk of tipping, especially when operating on slopes or uneven terrain.
It’s easier to store and transport the tractor, and with adjustable tread settings you can match your specific tasks and terrain.
Height To ROPS / Cab
The total height to the top of the ROPS (Roll-Over Protective Structure) is 77.2 inches (196 cm). This number is important to consider for garages, sheds, or low-clearance workspaces.
Being just over six feet, the tractor can fit under most standard doorways and low-hanging structures. You don’t have to worry as much about overhead clearance when moving through barn doors or under low tree branches.
The ROPS adds safety if you use the tractor on slopes or rough ground. If you need less height, folding ROPS models are available as well.
This makes the AGCO ST24A accessible to more types of operations without the need for custom entryways or alterations to buildings.
Ground Clearance
The AGCO ST24A offers good ground clearance for its size, though specific numbers may vary by tire selection. Ground clearance determines how high the tractor sits above the ground—allowing you to drive over bumps, debris, and field rows without snagging parts underneath.
Sufficient clearance protects critical components like the transmission and hydraulic lines from impact or debris. You can work in rough fields or mowing tall grass confidently, knowing there’s less risk to the tractor’s underbody.
For most compact tractors, ground clearance is typically between 8 and 12 inches. For the ST24A, you can expect clearance in this common range, which allows you to tackle light grading and traversing uneven property while maintaining a stable ride.
Shipping Weight
The shipping weight of the AGCO ST24A is 1,565 lbs (709 kg). This is the weight as delivered from the factory, without added fluids or attachments.
A lighter shipping weight allows for easier loading and transportation to your field or job site. It also affects the size of trailers or trucks needed for moving the tractor.
Compact tractors like this one are often hauled with mid-sized trailers and don’t require heavy-duty equipment. It can be loaded with ramps or lifts without much hassle.
If you need to transport multiple pieces of equipment, this weight gives you more flexibility. The lighter weight contributes to lower soil compaction, which is a benefit for garden and turf work.
Operating Weight (With Fluids)
The operating weight, which includes necessary fluids like fuel, oil, and coolant, is typically higher than the shipping weight. For the AGCO ST24A, the operating weight is reported as 1,800 lbs (816 kg).
This figure gives a more realistic sense of the tractor’s weight when actually in use. It matters for stability and overall performance, especially when using heavier implements or operating on soft ground.
Knowing the operating weight helps you plan transportation, lifting, and even ground pressure. You’ll find that this moderate weight keeps the tractor nimble but still provides enough ballast for small loader tasks or pulling attachments.
| Dimension Topic | Value/Description |
|---|---|
| Wheelbase | 59.9 inches (152 cm) |
| Overall Length | 105.5 inches (267 cm) |
| Overall Width (Minimum Tread) | 39.4 inches (100 cm) |
| Height To ROPS / Cab | 77.2 inches (196 cm) |
| Ground Clearance | Estimated 8-12 inches, varies by tires |
| Shipping Weight | 1,565 lbs (709 kg) |
| Operating Weight (With Fluids) | 1,800 lbs (816 kg) |
Fuel & Fluids
To keep your AGCO ST24A tractor running well, it is important to use the correct types and amounts of fluids. Specific fluid capacities and requirements help with performance, maintenance, and operational safety.
Fuel-Tank Capacity
The AGCO ST24A uses diesel fuel for its 22.5 hp engine. The fuel tank can hold approximately 6.1 gallons (23 liters) of diesel.
This gives you a good amount of operating time before needing to refuel. Fill the tank using standard-grade diesel fuel that matches local regulations.
Never use gasoline or biodiesel blends not recommended by the manufacturer. Keep the tank clean to prevent dirt from reaching the fuel system.
Regularly check your fuel level, especially before long jobs. Keeping the tank above half-full during cold weather prevents condensation, which can cause water to build up and lead to fuel system problems.
Key Points:
- Fuel Type: Diesel
- Capacity: 6.1 gallons (23 liters)
- Use clean, high-quality diesel only
DEF-Tank Capacity (If Applicable)
The AGCO ST24A does not have a Diesel Exhaust Fluid (DEF) system. Because it is a compact tractor with a smaller engine size, DEF is not required for this model year or emission standard.
You do not need to add or check DEF fluid on this tractor. Maintenance is simpler since you only need to focus on fuel and oil.
If you see references to DEF for other tractors, remember that this does not apply to your ST24A.
Key Points:
- DEF System: Not applicable
- DEF Capacity: Not applicable
- No maintenance needed for DEF
Engine Oil Capacity
The engine oil is vital for keeping the 22 hp diesel running smoothly. The total engine oil capacity for the AGCO ST24A is about 2.6 quarts (2.5 liters) when changing both oil and filter.
Always use the oil type recommended in your manual, usually SAE 15W-40 for most climates. Change the oil and filter every 100 hours or at least once per season, whichever comes first.
Check the oil level before every use. Low oil can cause major engine damage.
After draining, refill to the mark on the dipstick without overfilling.
Key Points:
- Engine Oil Capacity: 2.6 quarts (2.5 liters)
- Recommended Oil: SAE 15W-40
- Change Interval: Every 100 hours or yearly
Hydraulic/Transmission Oil Capacity
The hydraulic and transmission system shares the same reservoir in the AGCO ST24A. The total fluid capacity for both is around 4.5 gallons (17 liters).
Use only high-quality tractor transmission/hydraulic fluid specified for AGCO tractors. This fluid operates the transmission, hydraulics, and rear axle, so it must be kept clean and at the right level.
You should check and top up the fluid regularly. Replace the hydraulic/transmission oil at intervals listed in your manual, usually every 300-400 hours.
Change the filter at the same time to maintain smooth operation of hydraulic implements and the transmission.
Key Points:
- Hydraulic/Transmission Oil Capacity: 4.5 gallons (17 liters)
- Fluid Type: Tractor transmission/hydraulic oil
- Change Interval: Every 300-400 hours
| System | Capacity | Type / Notes | Maintenance Interval |
|---|---|---|---|
| Fuel Tank | 6.1 gal (23 L) | Diesel only, keep above half in cold | As needed |
| DEF Tank | Not applicable | DEF not needed for this model | Not required |
| Engine Oil | 2.6 qt (2.5 L) | SAE 15W-40 recommended | Every 100 hours or yearly |
| Hydraulic/Transmission | 4.5 gal (17 L) | Tractor transmission/hydraulic oil | Every 300-400 hours |
Electrical System
The AGCO ST24A tractor uses a 12-volt electrical system with components specifically sized for reliable engine starts and ongoing electrical needs. Its design ensures easy maintenance and steady charging.
Dependable performance is maintained even in tough conditions.
| Feature | Specification | Notes |
|---|---|---|
| Ground Type | Negative | Standard in most modern tractors |
| Alternator/Charging | Alternator | 12V, supports various components |
| Charging Output | 40-45 Amps (typically) | Supports battery and electrical loads |
| Battery Voltage | 12 Volts | Common, easy replacement |
| Battery CCA | 420-500 CCA (typical range) | Cranking power for all-weather starts |
| Starter | 12 Volt, 13 tooth | Reliable cold and hot engine starts |
Ground Type (Negative / Positive)
Your AGCO ST24A tractor uses a negative ground electrical system. This is the most common ground type found in tractors and other vehicles today.
With negative ground, the negative terminal of your battery is connected directly to the frame of the tractor. Negative ground systems are preferred because they help prevent corrosion of electrical contacts.
They also offer greater compatibility with modern equipment and accessories. Most aftermarket options for electrical parts like the starter or alternator are designed for negative ground.
Always check your battery terminals and cables for any corrosion or loose connections. It is important that the ground strap, which connects the engine block to the frame, is clean and tight for proper electrical performance.
Alternator / Charging System
The ST24A is equipped with a compact, belt-driven alternator. This alternator is responsible for keeping your battery charged and powering all electric accessories while the engine is running.
Components relying on this system include the lights, gauges, ignition, and starter relay. If you notice dim lights or slow starter performance, it could signal an alternator problem.
The alternator output is controlled by a built-in voltage regulator, which protects both the battery and sensitive electronics from overcharging. When replacing or upgrading the alternator, match the mounting style and ensure the output matches or exceeds the standard specification set for this model.
Charging Output (Amps)
The alternator on your ST24A typically delivers about 40 to 45 amps under load. This is sufficient to supply power for starting the tractor, charging the battery, and running your electrical accessories like lights or additional work lamps.
If you add accessories such as extra lighting, electric sprayers, or a cab fan, make sure the total current draw does not go beyond the alternator output. Drawing more current than the alternator can supply will drain the battery over time.
A digital or analog voltmeter on the dash can help you keep an eye on the system’s health. If you find the battery frequently low, use a clamp-on ammeter to check for a charging shortfall.
Battery Voltage
You will find a 12-volt battery installed under the hood of the AGCO ST24A. This 12V system is standard for compact tractors and works with all electrical components on the machine, including the starter, ignition, and lights.
A 12V battery is easy to replace and widely available. Always select a battery with the correct post configuration and secure it using the manufacturer’s mounting hardware.
Check your battery voltage with a digital voltmeter. It should read close to 12.6 volts with the tractor off and around 13.5 to 14.5 volts with the engine running.
Battery CCA Rating
Cold Cranking Amps (CCA) are important for ensuring reliable starts, especially in cold weather. For the ST24A, batteries typically have a CCA rating in the range of 420 to 500 CCA.
This rating ensures there is enough starting power to turn over the engine and fire the starter and ignition system even when temperatures drop. You should always choose a replacement battery that meets or exceeds the factory CCA rating.
A battery with higher CCA can help if you operate your tractor in very cold areas. Low CCA ratings increase the risk of weak starts and may stress the electric starter motor over time.
If your starter cranks slowly or the tractor is hard to start on cold mornings, test your battery’s CCA and consider replacement if it falls below the recommended value.
Total Cost Of Ownership Metrics
Understanding the cost of owning an AGCO ST24A tractor goes beyond the purchase price. You must consider ongoing maintenance, fuel needs, expected routine service, and how the tractor’s value drops each year.
| Metric | Value/Details | Notes |
|---|---|---|
| Recommended Service Intervals | Every 50, 100, 250 hours (+seasonal checks) | Based on typical compact tractor schedules |
| Estimated Annual Maintenance Cost | $300 – $600 | Excludes major repairs |
| Depreciation Curve (% per year) | 7%–12% first 5 years, slows after | Value retention varies |
| Fuel Consumption @ Rated Load (L/hr) | 2.8 – 3.4 | Based on similar 22–25 hp tractors |
Recommended Service Intervals
You should perform regular oil and filter changes every 50 to 100 hours. Inspect and replace the air filter as needed, especially in dusty environments.
Check transmission and hydraulic fluid levels every 100 hours and change them at 250-hour intervals. Other recommended tasks include greasing fittings, tightening bolts, and inspecting the tire pressure each month.
Some owners do a thorough check at the start and end of every season. Following the manufacturer’s maintenance schedule found at sites like TractorData.com helps avoid costly breakdowns.
Estimated Annual Maintenance Cost
Annual maintenance costs depend on how much you use your tractor and if you perform service yourself. For most owners, you can expect to spend about $300 to $600 per year on oils, fluids, filters, belts, and small parts.
This cost covers routine items only. It does not include replacing tires or making major repairs if something fails.
If you use your tractor heavily or hire a dealer for all service, your annual cost might be higher.
Depreciation Curve (% Per Year)
The AGCO ST24A tractor typically loses 7% to 12% of its value each year for the first five years. After the initial drop, the depreciation rate slows.
If you bought your tractor new for $15,000, expect it to be worth roughly $9,000 to $10,000 after five years, depending on wear and care. Older tractors often hold their value if they are in good working order and have a full service history.
Demand for compact tractors can also reduce depreciation in certain markets.
Fuel Consumption @ Rated Load (L hr⁻¹)
At rated load, the AGCO ST24A’s 22.5 horsepower diesel engine uses about 2.8 to 3.4 liters of fuel per hour. This matches other compact tractors in the 20–25 horsepower range.
Factors that affect the fuel rate include the type of work (mowing, tilling, hauling) and field conditions. If the tractor is running at full or partial load, this will also influence consumption.
For light, intermittent jobs, actual consumption may be lower.