AGCO ST47A Tractor 47 hp Overview, Features, and Specifications

AGCO ST47A Tractor 47 Hp

A red AGCO ST47A tractor with 47 hp parked in a field

The AGCO ST47A is a 47-horsepower compact utility tractor built for reliable performance and versatility on small to medium farms. You will find this machine sturdy, precise, and well-suited for handling various field and yard tasks.

Production & Identification

The AGCO ST47A was produced during the mid-2000s as part of AGCO’s compact utility tractor lineup. Built in Japan by Iseki for AGCO, this model is equipped with a 4-cylinder Iseki diesel engine.

The engine offers a gross power output of 47.5 hp and features a displacement of 2.2 liters. Identifying the ST47A is straightforward.

It often carries the “ST47A” decal on the side. The tractor measures about 10.86 feet in length, 5.45 feet in width, and 7.52 feet tall at the cab.

Its wheelbase is 6.24 feet.

Below is a table summarizing the production and identification details:

Feature	Specification
Manufacturer	AGCO (built by Iseki)
Model	ST47A
Engine Type	4-cylinder Iseki diesel
Power Output	47.5 hp (gross)
Displacement	2.2 L (134 ci)
Dimensions (L × W × H)	10.86 ft × 5.45 ft × 7.52 ft
Wheelbase	6.24 ft
Production Years	Mid-2000s
Identification	“ST47A” decal on frame

Manufacturer / Brand

The AGCO ST47A tractor is distributed under the AGCO brand. AGCO is an American agriculture equipment company that manages several brands.

This tractor is actually manufactured by Iseki. Iseki is a Japanese company with a reputation for making compact and utility tractors.

For the ST47A, Iseki produces the tractor in Matsuyama, Japan. You often find AGCO-branded tractors sharing designs and parts with models sold under other names.

Massey Ferguson is another well-known brand under AGCO’s umbrella. Some Massey Ferguson compact tractors share similar features with the Iseki-built AGCO models.

Major competitors to AGCO in this market include John Deere, Kubota, and New Holland. These brands also offer compact utility tractors with similar horsepower.

Brand Comparison Table

Brand	Country	Role on ST47A	Notable Fact
AGCO	USA	Distributor / Marketer	Oversees brands like Massey Ferguson and distributes Iseki models as AGCO in North America.
Iseki	Japan	Manufacturer	Builds ST47A in Matsuyama, Japan. Trusted for small and mid-size tractors.
Massey Ferguson	USA/Global	Related Brand under AGCO	Some models based on Iseki designs. Large global presence.
John Deere	USA	Competitor	Offers compact tractors with similar power ratings.
Kubota	Japan	Competitor	Specializes in compact utility tractors. Strong market share.
New Holland	Global	Competitor	Makes a range of compact and utility tractors.

If you own or are considering an AGCO ST47A, you are getting a tractor built by an experienced Japanese manufacturer (Iseki) and supported through one of the largest agricultural equipment companies in the world (AGCO).

Model Number / Series

The AGCO ST47A is part of a compact tractor series that includes other models like the ST34A, ST41A, and ST52A. Each model refers to its approximate engine horsepower.

You can use this series for small farms, landscaping, or property maintenance. The ST47A gives you about 47.5 horsepower, making it well-suited for medium-duty jobs.

The other models in the series fit different needs:

ST34A: Smaller jobs, about 34 hp
ST41A: About 41 hp, for medium-light use
ST47A: About 47 hp, for heavier jobs
ST52A: Largest in the series, about 52 hp

If you need a machine for tougher work, the ST52A delivers more power. For lighter work, the ST34A might be a better fit.

The ST41A and ST47A sit in the middle and offer a balance of power and size. These tractors often share features like 4WD, hydrostatic or gear transmissions, and compact size.

However, PTO power, engine displacement, and weight can vary by model.

You can compare the main differences within this series in the table below:

Model	Engine Power (hp)	PTO Power (hp)	Typical Use	Transmission Options
ST34A	~34	~29	Light duty	Hydro/Gear
ST41A	~41	~34	Medium-light duty	Hydro/Gear
ST47A	~47.5	~38	Medium to heavy duty	Hydro/Gear
ST52A	~52	~44	Heavy duty, larger jobs	Hydro/Gear

Each model in the series is designed for users seeking reliable tractors with different power levels depending on their tasks.

Factory Of Manufacture

The AGCO ST47A tractor is manufactured in Matsuyama, Japan. The production takes place at facilities run by Iseki, a well-known Japanese manufacturer of agricultural machinery.

You will find that Iseki is responsible for assembling the key components, including the engine and frame. AGCO, an American company, distributes and brands the tractor for the US market.

This cross-national collaboration brings Japanese engineering and quality control together with AGCO’s distribution network. The manufacturing facility is equipped with modern assembly lines, strict testing procedures, and skilled workers.

Quality checks are performed throughout the assembly process.

Factory Details Table

Detail	Information
Location	Matsuyama, Japan
Manufacturer	Iseki
Built For	AGCO (Distribution in USA)
Primary Activities	Assembly, engine installation, final testing
Quality Control	Multi-stage, on-site inspections
Main Product Line	Compact utility tractors

Iseki’s history in agricultural equipment provides you with reliable machinery. Every AGCO ST47A passes through checks at the Matsuyama factory before being shipped.

The result is a compact utility tractor known for durability and solid construction.

Years Produced

You can find the AGCO ST47A Tractor was produced from 2005 to 2008. This model is part of the ST-A Series, which includes other similar tractors with slightly different horsepower.

The ST47A was introduced to give users a reliable, compact utility tractor. Production continued until 2008, after which AGCO moved on to other models.

Below is a table highlighting the years produced and related details:

Model	Years Produced	Horsepower	Series	Manufacturer
ST47A	2005 – 2008	47.5 hp	ST-A	Iseki
ST52A	2005 – 2008	52.1 hp	ST-A	Iseki

The ST47A was distributed in the United States but was manufactured in Japan by Iseki. Its production period matches other models in the ST-A Series.

If you are looking for a tractor from this period or searching for parts, keep these production years in mind.

Original List Price (Launch Year)

The AGCO ST47A tractor was first introduced in the mid-2000s. At launch, you could expect a list price typically set in the $20,000–$25,000 range in the United States, depending on dealer options and local taxes.

AGCO priced the ST47A to target small to medium farms, landscaping businesses, and rural property owners. This price covered a base model with standard features, while optional equipment could increase the final cost.

Your final purchase price at launch might have changed if you added implements like loaders, mowers, or additional attachments. Financing options, dealer incentives, and regional price differences also played a role.

Below is a table providing a detailed look:

Year Introduced	Estimated List Price (USD)	Market Segment	Factors Affecting Final Price
Mid-2000s	$20,000–$25,000	Small/Medium Farms, Property Owners	Attachments, Dealer Options, Region, Taxes

Even though this price was competitive for its power and size, actual cost at purchase could vary as dealers adjusted for market conditions and add-ons.

Serial-Number Location

You can find the serial number on your AGCO ST47A tractor in a few key locations. It is important to know this when ordering parts or verifying the tractor’s identity.

Most often, the main serial number plate is mounted on the side of the tractor frame. For the ST47A, look along the right side just below the operator’s seat or on the transmission housing.

The plate is usually metal and stamped with numbers and sometimes letters. If you do not see the plate, check the following common spots:

Right side of the frame by the engine
Near the rear axle housing
Around the dashboard area
Under or beside the operator seat

Make sure to clean off any dirt or grease, as serial numbers can sometimes be hard to read if the area is dirty. The serial number usually consists of a series of numbers, and sometimes letters, unique to each tractor.

Write down the entire number exactly as it appears for record-keeping and when contacting parts dealers.

Table: Common Serial Number Locations on AGCO ST47A

Location	Details
Right frame below operator’s seat	Most common area
Transmission housing	Check for metal plate
Rear axle housing	Check left and right sides
Dashboard area	Sometimes near gauges
Under/beside the seat	Less common, but possible

Use a flashlight if visibility is poor, and never scratch or damage the plate, as it is important for identification.

Engine Specifications

The AGCO ST47A tractor features a 47.5 hp diesel engine, built for consistent farm and landscaping use. Its engine design, fuel system, and cooling all contribute to performance, ease of maintenance, and reliability.

Engine Make & Model

The AGCO ST47A uses an Iseki-built engine, specifically crafted for compact utility tractors. Iseki is well known for manufacturing reliable and efficient diesel engines, often found in agricultural and industrial machinery.

This engine points to a strong balance between durability and ease of maintenance. Iseki’s design emphasizes simple service points and high-quality components.

You can expect long hours of work with fewer breakdowns. Maintenance intervals are reasonable, and major parts are generally accessible.

The engine powers the AGCO ST47A through different tasks, making it suitable for loaders, mowing, tillage, and hauling jobs. Iseki engines are widely respected for maintaining steady power output even in challenging conditions.

They don’t require frequent adjustments or complex diagnostics compared to more high-strung engines.

Fuel Type & Emissions Tier

You will find the AGCO ST47A runs on standard diesel fuel. This choice means cleaner combustion, more torque at low rpms, and longer engine life compared to gasoline engines.

Diesel engines are popular on utility tractors for their fuel economy and load-handling characteristics. When it comes to emissions, specific data for the ST47A’s emissions tier isn’t always available, but tractors of this era commonly meet basic EPA requirements for off-road equipment.

It’s not equipped with advanced emissions technologies like DEF fluid or particulate filters, which are more common on newer, higher-horsepower tractors. For most users, this results in fewer emission-related components that require attention or maintenance.

The fuel system is straightforward, usually involving a fuel filter and a basic primer pump. You can work with off-road diesel, but always use clean, fresh fuel to avoid injector problems.

Winter blends are best during colder months to prevent gelling.

Cylinders / Displacement

The AGCO ST47A is powered by a 4-cylinder diesel engine. The engine’s 4-cylinder inline design is standard for reliability and decent torque output in compact tractors.

Displacement for the engine sits at 2.2 liters (or 134 cubic inches). This engine size balances efficiency and power, producing enough strength for various jobs without consuming a lot of fuel or creating excess heat.

With 4 cylinders, the engine achieves smoother operation and steadier rpm across different tasks. The inline arrangement keeps vibration low, improving both driver comfort and the engine’s longevity.

Cylinder design and displacement directly affect how much torque and power the tractor can deliver, especially at lower rpm ranges.

Rated Horsepower (Gross & Net)

The AGCO ST47A tractor’s engine produces a gross horsepower of 47.5 hp (35.4 kW) as measured at the engine itself. Gross horsepower is the engine’s full output before losses from accessories or attachments.

Net horsepower, which accounts for those accessory losses, is usually a few horsepower lower than gross. For this engine, PTO (Power Take-Off) horsepower figures are about 36.5 hp for the hydrostatic transmission version and 38 hp for the gear drive model.

You should match attachments to the tractor’s PTO rating for best performance, especially with power-intensive equipment.

Peak Torque (Nm @ Rpm)

Specific torque ratings for the AGCO ST47A engine are not always published in retail resources. The combination of a 4-cylinder, 2.2-liter design and diesel fuel means you can expect a strong torque curve at lower rpm.

Diesel engines like this often develop peak torque below the engine’s maximum rpm, which improves performance when pulling or pushing loads. Typically, an engine of this size and configuration produces peak torque in the range of 120–150 Nm (88–110 lb-ft) at around 1500–1800 rpm.

This allows the tractor to maintain steady pulling power without spinning excessively fast. The engine’s design ensures torque delivery is consistent and linear, aiding in low-speed operations and reducing the chance of engine stalling under load.

Compression Ratio

The compression ratio for the Iseki 2.2L diesel engine is typically about 18:1, though slight variations may exist by model year or market. This high level of compression is typical for diesel engines and is key to the way diesel combustion works.

A higher compression ratio improves energy extraction from each unit of fuel, supporting both cold-weather starting and high efficiency. For the operator, this translates to more starting reliability in winter and consistent power during all-season use.

You don’t need to adjust or service the compression ratio. It’s designed and set by the manufacturer.

A higher ratio also demands strong internal parts, so you can expect pistons, rods, and cylinder walls to be robust and built for longevity.

Cooling System & Capacity

The AGCO ST47A uses a liquid-cooled system to manage engine temperature. Liquid cooling is more effective than air for consistent heat removal and allows the engine to run at stable temperatures during long work sessions.

The radiator, hoses, thermostat, and water pump form the critical parts of the system. Coolant flows through the engine and radiator, pulling heat away before circulating back.

Coolant capacity for this engine is typically between 6 to 8 quarts (about 5.7 to 7.6 liters). It’s important to check and top up coolant regularly, especially in high-demand environments.

Using the correct type of antifreeze or coolant is essential for preventing corrosion and ensuring freeze protection during winter months.

Engine Specifications Overview Table

Feature	Specification / Details
Engine Make & Model	Iseki 4-cylinder diesel
Fuel Type & Emissions Tier	Diesel; meets standard off-road requirements
Cylinders / Displacement	4 cylinders; 2.2 L (134 ci)
Rated Horsepower (Gross/Net)	47.5 hp gross (35.4 kW); 36.5 hp PTO (hydro)
Peak Torque (@ RPM)	~120–150 Nm @ 1500–1800 rpm (estimated)
Compression Ratio	18:1 (typical for Iseki diesel)
Cooling System & Capacity	Liquid-cooled; 6–8 quarts (5.7–7.6 liters)

Power Take-Off (PTO)

The AGCO ST47A tractor includes an independent rear PTO system. PTO performance features like claimed horsepower, independent engagement, and fixed speed are essential for many implements.

Feature	Specification	Details/Notes
Claimed PTO Horsepower	36.5 hp	Delivers steady power output
PTO Type	Independent	Operates separate from transmission
PTO Speeds	540 RPM	Standard for most attachments

Claimed PTO Horsepower

You get a claimed PTO horsepower of 36.5 hp with the AGCO ST47A. This is the rated power available at the PTO shaft for running implements such as mowers, balers, and rotary tillers.

The 36.5 hp figure is important because it determines what kind of tools you can use. Heavier or larger implements may require more PTO horsepower to operate efficiently.

A consistent PTO output ensures that your equipment functions properly and avoids engine strain. Always check the specific horsepower needs of your equipment before use.

Using implements that exceed the PTO output could cause poor performance or equipment damage.

PTO Type (Independent / Live / Economy)

The ST47A is equipped with an independent rear PTO. With an independent PTO, you can engage or disengage the shaft regardless of the transmission or tractor movement.

This setup helps you start or stop PTO-driven attachments without stopping the tractor. It adds flexibility and is useful when working with equipment that must be frequently engaged or disengaged.

The independent PTO is controlled using a lever or switch. This makes it easier to use than a live PTO, which would require clutch operation.

The independent system is designed for reliability and safety, ideal for both new and experienced users. You can change speeds or direction of the tractor without affecting PTO operation.

PTO Speeds (540 / 1 000 Rpm)

The AGCO ST47A provides a standard 540 RPM rear PTO speed. This is the most common PTO speed and fits a wide range of agricultural tools.

When you select 540 RPM, your implements run at a stable and efficient rate. Most rotary mowers, tillers, and utility attachments are designed to operate at this PTO speed.

There is no 1,000 RPM option on the ST47A, so you will be limited to implements compatible with 540 RPM systems. Always check that your equipment matches the tractor’s PTO speed before use.

Transmission & Drivetrain

The AGCO ST47A features a shuttle transmission, four-wheel drive, and mechanical differential lock. Its drivetrain is designed for traction, versatility, and ease of use in a range of agricultural and property maintenance tasks.

Transmission Type (Syncro, Powershift, CVT, HST)

You get an 8×8 synchro shuttle transmission with the AGCO ST47A. This means you have eight forward gears and eight reverse gears, allowing you to match ground speed with your workload.

A synchro shuttle lets you switch directions quickly. Instead of stopping completely, you can shift from forward to reverse smoothly, which helps a lot when loader work or changing directions often.

The design is not hydrostatic (HST) or powershift but uses synchronizers for smoother gear changes compared to basic gear transmissions. You control your gear selection with levers to get the right speed.

This transmission is simple but reliable, making it easy for both new and experienced operators.

Number Of Gears / Ranges

The AGCO ST47A offers a total of sixteen gears—eight forward and eight reverse. These are split into high and low ranges.

You have flexibility to choose the best speed for the job. Whether you are creeping along for tillage or needing to move quickly between tasks, there is a gear that matches your pace.

Here is a quick breakdown:

Range	Forward Gears	Reverse Gears
Low Range	4	4
High Range	4	4

With separate shift levers for ranges and gears, you can make adjustments as needed.

Top Transport Speed

This tractor can reach a maximum transport speed typical for compact tractors in its class. You can expect a top speed of around 15 to 18 mph (24 to 29 km/h) when driving on roads or moving from one field to another.

This allows you to save time between jobs. The transmission design keeps the tractor stable and easy to handle at higher speeds.

You maintain control even on different surfaces. Always check local road rules before traveling on public roads with the tractor.

Drive (2WD / 4WD / AWD)

The AGCO ST47A features full-time four-wheel drive (4WD). This means power is delivered to all four wheels, helping you maintain traction on loose soil, grass, or uneven terrain.

Unlike 2WD tractors, this 4WD can handle wet, muddy, or hilly work areas with more confidence. Engaging all wheels enhances pulling ability and stability.

You do not have selectable automatic all-wheel drive (AWD) or the option to switch to 2WD. The 4WD system is especially useful if you use loaders or other front-mounted equipment.

Differential-Lock & Final Drives

You get a mechanical rear differential lock as standard. This lets you lock both rear wheels to turn together instead of one spinning freely.

Use the differential lock when in mud, soft soil, or when traction is uneven. The rear final drives use strong spur gears.

Spur gears are rugged and help transmit power from the axle to the wheels efficiently. The setup requires minimal maintenance and stands up well under heavy use.

When traction is not an issue, you can leave the differential unlocked for smoother turning and less wear on the lawn or field.

Feature	Details
Transmission Type	8×8 Synchro Shuttle (manual levers, not hydrostatic or powershift)
Number of Gears / Ranges	8 forward, 8 reverse (High & Low ranges)
Top Transport Speed	~15–18 mph (24–29 km/h)
Drive System	Four-wheel drive (4WD)
Differential Lock	Mechanical rear differential lock
Final Drives	Spur gear final drives (robust, low-maintenance)

Steering & Brakes

The AGCO ST47A tractor uses modern steering and brake technology to help you operate the machine with less effort. Its system is designed for durability, safety, and control in different field and yard conditions.

Feature	Type/Description	Key Benefits
Steering System	Power Steering (Hydrostatic/Mechanical elements)	Less steering effort, precise handling
Turning Radius (With Brakes)	Tight, assisted by braking	Better maneuverability
Service Brakes	Wet Disc Brakes	Strong stopping, less wear
Parking Brake Type	Mechanical Lever, integrated with service system	Safe parking, secure hold

Steering System (Hydrostatic / Power-Assisted / Mechanical)

The AGCO ST47A features a power steering system, making steering much easier compared to older, fully manual tractors. This system uses hydraulic (hydrostatic) pressure to reduce the physical effort needed when turning the wheel.

Even with heavy loads on the front axle or during slow operations, you can maintain smooth and precise control. The power-assist allows you to make quick steering corrections in tight spaces, which is important when working around obstacles.

Mechanical linkages connect the hydraulic system to the wheels, combining strength and reliability. The system is designed to be low maintenance.

If you are operating with a front loader or heavy attachments, power steering makes tasks far less tiring.

Turning Radius (With Brakes)

This tractor is built with a tight turning radius, which allows you to maneuver more efficiently in both field and yard work. When you use the turning brakes, you can make even sharper turns, which is helpful for row crop work and navigating through gates or narrow areas.

With the brakes applied to one rear wheel while steering, the tractor can pivot more tightly. This enables zero-to-minimal backing when turning at row ends or when working in confined yards.

You can improve your turning efficiency by coordinating the use of the steering wheel and split rear brakes in tight situations. The system is robust, designed to handle frequent use without excess wear.

Service Brakes (Wet Disc, Dry Drum, etc.)

The AGCO ST47A uses wet disc brakes for its primary service braking. Wet disc brakes operate in an oil bath, which helps keep heat and dust away from the braking surfaces.

This increases the life of the brake components and reduces maintenance. Wet disc brakes offer reliable stopping power, even in tough or wet conditions.

They perform consistently over time and do not wear down as quickly as dry drum brakes. Regular checks and fluid maintenance are suggested.

You will typically have fewer brake replacements than with older systems. This type of brake is also quieter and less likely to lock up suddenly.

You have separate pedals for each rear wheel, which allows for controlled braking and improved turning.

Parking Brake Type

The parking brake on the ST47A is a mechanical lever that locks the rear wheels in place. It is directly connected to the service brakes, so when set, it uses the internal wet disc mechanism to hold the tractor securely.

You activate the parking brake by pulling and locking the hand lever, which is usually located beside the operator’s seat. This provides extra safety when you leave the machine parked on a slope or with an attached implement.

It is important to use the parking brake whenever you stop or leave the tractor. Regular inspection and adjustment ensure effective holding.

Cab & Operator Station

The AGCO ST47A tractor is designed to keep you safe and comfortable during long hours of use. Key features like cab options, seating, climate controls, and noise levels all play a role in operator performance and wellbeing.

ROPS / Cab Option

You can choose between an open operator station with a Roll Over Protective Structure (ROPS) or an enclosed cab, depending on your needs and work environment. The ROPS meets strict safety standards and helps protect you during rollover incidents.

If you prefer more protection from weather, the enclosed cab option offers a sealed environment. Some cabs are designed specifically to fit tractors with or without factory loader controls.

Both options give you good entry and exit space. The ROPS allows for better visibility, while the cab increases security by keeping out dust and debris.

Climate Control (A/C, Heater, Filter)

With the enclosed cab, you get the benefit of integrated climate control systems. Air conditioning (A/C) provides relief during hot weather.

Heaters are standard for cold seasons, making winter work much more comfortable. Most cabs also include air filtration systems to keep out pollen and fine dust.

Controls for these systems are simple and within easy reach of your seat. Vent placement and airflow design ensure the entire cab space stays evenly conditioned.

Seat & Suspension

The ST47A comes with an adjustable seat designed to support your back and reduce fatigue. Suspension options include mechanical or, in upgraded versions, air suspension for better shock absorption on rough ground.

You can move the seat forward, back, or adjust the height to fit your body size. Armrests and lumbar support are included for extra comfort.

The layout of the operator station keeps all controls close to your seat. This reduces the need to stretch or lean, minimizing muscle strain during long jobs.

Noise Level (dB A @ Operator Ear)

Tractor noise has a direct impact on your long-term hearing health. The AGCO ST47A cab is insulated to lower sound levels for the operator.

When the cab doors are sealed, most engine and hydraulic noise is blocked. Typical measured noise levels at the operator’s ear are below 85 dB(A), which is safer for extended operation.

The ROPS-only version will be noisier since you are exposed to the engine and environment. Wearing ear protection is recommended if you often use the open ROPS version.

In the cab, noise fatigue is greatly reduced.

Feature	ROPS/Open Station	Enclosed Cab
Safety Protection	ROPS for rollover safety	ROPS frame inside cab shell
Weather Protection	None, open to elements	Full enclosure, sealed windows
Climate Control	N/A	Air conditioning, heater, filters
Seat Type	Adjustable, basic suspension	Adjustable, optional air suspension
Operator Noise (dB A @ Ear)	Higher, up to 90+ dB(A)	Lower, typically <85 dB(A)
Dust/Debris Control	Minimal, exposed	Sealed, filtered air
Control Layout	Standard	Standard, controls within reach

Hydraulics

The hydraulic system on the AGCO ST47A supplies high flow for implements and controls. It is designed for efficient operation with standard farm attachments and routine field tasks.

System Type (Open-Center / Closed-Center / PFC)

The AGCO ST47A uses an open-center hydraulic system. This means the hydraulic fluid constantly circulates through the system when not in use.

Such a system is known for its simplicity and reliability. Open-center systems are less complex than closed-center or pressure-flow compensated (PFC) systems.

They do not require advanced electronic controls. This type is easier to maintain and repair, and it is cost-effective for most small and mid-size tractor needs.

When you engage a hydraulic function, the fluid flow is directed to the cylinder or motor as needed. Once the function is complete, the fluid returns to the reservoir.

This keeps the system cool and stable during long work hours.

Implement Pump Flow (L Min⁻¹)

The implement hydraulic pump on the AGCO ST47A delivers a flow capacity of 11.6 gallons per minute (43.8 liters per minute). This amount of flow offers consistent power to attachments like loaders, backhoes, and 3-point hitch implements.

Higher flow rates allow for faster cycle times when raising, lowering, or operating hydraulic attachments. With 43.8 L/min, you can use most typical farm equipment without delays or lag.

This level of implement pump flow supports multi-function operation. You can run hydraulic tools or lift heavy equipment without sacrificing speed.

Steering Pump Flow (If Separate)

On the AGCO ST47A, the steering pump is not a separate circuit; it shares the main hydraulic system. This single-pump design simplifies maintenance and lowers the number of parts.

When steering and implement hydraulics are combined, the system directs priority flow to steering. This ensures safe and smooth handling, even if you are operating multiple hydraulic tools at once.

Because there is no dedicated steering pump flow rating, all hydraulic flow measures are from the main system. This configuration is typical for tractors in this size range.

Total Combined Flow

Since the ST47A uses a single hydraulic pump, the total combined flow is 11.6 gal/min (43.8 L/min). All hydraulic needs—implement functions, steering, and remote valves—draw from this pool.

This total flow allows you to perform simultaneous tasks, such as steering while using loader functions or adjusting 3-point hitch implements. Most operators will not experience slowdowns, unless using very high-demand equipment.

Here’s a quick list of what can run on this combined flow:

Front-end loaders
Backhoe attachments
3-point hitch implements
Remote hydraulic cylinders

System Pressure (Bar / Psi)

The hydraulic system runs at a maximum pressure of about 180 bar (2,600 psi). This pressure enables the ST47A to exert enough force for demanding jobs like lifting, digging, and pulling.

System pressure is critical for tasks requiring strong, controlled movements. Higher pressure allows you to operate heavier attachments and handle bigger loads.

A working pressure of 2,600 psi is typical for compact utility tractors in this horsepower range. It strikes a balance between performance and the longevity of hoses, seals, and other system components.

Remote Valves (Number & Type)

The AGCO ST47A is equipped with up to 2 rear remote hydraulic valves as standard or optional equipment. These spool valves are commonly double-acting, allowing oil to flow in both directions to operate cylinders or hydraulic motors.

You can use these remotes to power attachments like hydraulic rams, log splitters, or implement lifts. They are usually lever-controlled and positioned for easy access on the operator platform.

If needed, you can add auxiliary remotes for specific attachments. Some versions may support single-acting valves or other types for specific tasks.

Hydraulic System Summary Table

Feature	Specification	Notes
System Type	Open-center	Simple, reliable, easy to maintain
Implement Pump Flow	11.6 gal/min (43.8 L/min)	Supports most standard attachments
Steering Pump Flow	Shared/main hydraulic system	No separate steering circuit
Total Combined Flow	11.6 gal/min (43.8 L/min)	All hydraulic functions share this flow
System Pressure	180 bar (2,600 psi)	Suitable for most heavy-duty implements
Remote Valves	Up to 2 rear, double-acting (typical)	For attachments and auxiliary equipment

Three-Point Hitch (3PH)

The AGCO ST47A tractor uses a three-point hitch to connect and operate many farm implements. You need to know about hitch type, lift strength, and control features to match tools and manage heavy tasks.

Subtopic	Details
Hitch Category	Category 1
Lift Capacity @ Ball Ends	About 3,086 lbs (at 24 inches behind lift point)
Draft / Position Control	Position control standard; draft not typical
Top-Link Sensing	No top-link sensing on this model

Hitch Category (1 / 1N / 2 / 3)

The three-point hitch on the AGCO ST47A is Category 1. You will find Category 1 hitches are common on compact and utility tractors in this power range.

A Category 1 hitch uses 7/8-inch diameter lower arm pins and a 3/4-inch top link pin. The arm spacing is about 26 inches, which fits most compact tractor implements.

If you plan to use tools, make sure the attachment is made for Category 1 to avoid fit and safety issues. Adapters are available but work best when the implement matches the hitch size.

This design supports mowers, tillers, blades, and other tools up to a moderate size.

Lift Capacity @ Ball Ends

The AGCO ST47A offers a strong lift for its size. Maximum lift capacity at 24 inches behind the hitch ball ends is about 3,086 lbs.

This lets you use a wide range of implements, including medium box blades, rotary cutters, or small hay tools. The capacity is measured at 24 inches behind the lift point since that’s where most implements place their weight.

If you use longer or heavier attachments, remember the lifting ability drops further away from the hitch ball. This strength is good for soil work, landscaping, and utility jobs around medium-sized properties.

Using heavy attachments safely requires keeping weight balanced and following the limits in the tractor manual.

Draft / Position Control

The ST47A has position control as standard equipment. Position control means you can set the hitch to lift an implement to a specific height and keep it there.

If you need to keep a mower or blade at the same level across a field, position control gives you that ability. The ST47A does not have draft control as a standard feature.

Draft control automatically raises or lowers an implement when soil resistance changes, which is useful for plowing. Most compact tractors like the ST47A are used for tasks that do not need draft control.

Top-Link Sensing (Yes/No)

There is no top-link sensing on this tractor. Top-link sensing is a system often found on bigger or premium models and is tied to draft control.

It helps the tractor adjust the implement’s depth, especially when pulling plows or similar tools. Since the ST47A is built for versatility and not heavy field plowing, lack of top-link sensing is expected.

For mowing, grading, or standard loader work, you won’t need top-link feedback. If your implements require precise automatic adjustment, you would need a larger or more advanced model.

Axles & Load Limits

Understanding the axles and load limits of your AGCO ST47A is vital for both safety and performance. The front and rear axles have set weight capacities, and the final-drive type affects how power is delivered and maintained.

Maximum Front-Axle Load (Kg)

The front axle of the AGCO ST47A is designed to handle the stresses of regular farm work, including carrying front-mounted attachments. You need to know the safe loading capacity to avoid overloading and damaging the axle or steering components.

For most mid-size compact tractors like this, the front–axle load limit is often set close to 1,000–1,300 kg. This allows you to use implements like loaders or snowblades without risking axle failure.

When operating the tractor with heavy tools or carrying loads, always check the distribution of weight. If the front axle load is exceeded, you risk affecting traction and handling.

Feature	Value (Typical)
Maximum Load (Front)	~1,200 kg
Affected by	Loader, Ballast
Major Concern	Steering Wear, Damage Risk

Maximum Rear-Axle Load (Kg)

The rear axle is the main weight-bearer for the tractor, especially when using three-point hitch implements. The AGCO ST47A’s rear axle can handle higher loads than the front, and this is reflected in its robust design.

Load capacities on the rear often reach 2,000–2,300 kg. The three-point hitch lift capacity at 24 inches behind the link arms is around 1,400 kg, and you must factor in the implement weight too.

This lets you safely work with heavy plows, tillers, or trailers. Exceeding the rear axle limit puts your drivetrain and final drives at risk of failure.

You will also notice increased tire wear and possible loss of control, especially on uneven ground or slopes.

Feature	Value (Typical)
Maximum Load (Rear)	~2,200 kg
Supported Equipment	Implements, Trailers
Major Concern	Tire Wear, Driveline Stress

Final-Drive Type

The AGCO ST47A uses a final-drive system that delivers power from the transmission to the wheels efficiently. This is typically accomplished with a spur gear or planetary gear system, known for their durability and ease of maintenance in 4WD compact tractors.

The final-drive design affects both the weight the axle can carry and how the tractor manages torque transfer. A robust gear-driven final drive helps evenly distribute forces across the axle, which is essential for handling heavier equipment without slippage or failures.

Keeping the final-drive system well-maintained is important, especially if you frequently operate at or near the load limits. Check gear oil levels and seals, and be alert to strange noises, which can indicate gear wear or alignment problems.

Final-Drive Aspect	Details
Type	Spur or Planetary Gear
Primary Benefit	High Strength, Reliable Power Delivery
Maintenance Need	Regular Oil Checks, Inspect Seals

Tires & Track Options

The AGCO ST47A offers several tire setups to match different job needs, soil types, and operating environments. You can select from various front and rear tire sizes and types, along with a few specialty options to boost stability or minimize ground impact.

Standard Front Tire Size (Ag / Turf / Industrial)

You can equip the AGCO ST47A tractor with three main types of front tires: Agricultural (R1), Turf (R3), and Industrial (R4). Each option is designed for a specific purpose.

Agricultural (R1): These are best for fieldwork and provide better traction in muddy or loose soil. The typical front size is 8-16.
Turf (R3): These cause less ground disturbance and are ideal for mowing and work on grass. A common front size is 27×8.50-15.
Industrial (R4): Built for hard surfaces, construction, or loader work, these tires offer durability and moderate traction. You often see 10-16.5 as the standard size.

Each tire type has strengths in certain conditions. Your choice depends on whether you want less turf damage, better traction in fields, or greater durability on construction sites.

Table: Standard Front Tire Sizes

Tire Type	Typical Size	Main Use	Tread Pattern
Ag (R1)	8-16	Fieldwork, plowing	Deep lugs
Turf (R3)	27×8.50-15	Grass, turf, mowing	Wide/flat blocks
Industrial (R4)	10-16.5	Loader, mixed use	Heavy-duty lugs

Standard Rear Tire Size

Rear tires handle most of the tractor’s load and traction. For the AGCO ST47A:

Ag (R1): The typical rear size is 13.6-24. These tires dig into soil for maximum pull.
Turf (R3): A common rear size is 41×14.00-20, made to protect grass and minimize ruts.
Industrial (R4): The rear usually uses 17.5L-24. This provides a strong sidewall for carrying loads and working over different terrain.

Choosing the right rear tire type will depend on your main tasks—farming, mowing, or heavy utility work. Always check the tire pressure to maintain performance and safety.

Table: Standard Rear Tire Sizes

Tire Type	Typical Size	Main Application	Tread Features
Ag (R1)	13.6-24	Heavy tillage, soil	Deep angled lugs
Turf (R3)	41×14.00-20	Turf, mowing	Smooth, wide
Industrial (R4)	17.5L-24	Construction, loader	Thick, firm lugs

Optional Duals / Tracks / Flotation Kits

For users who require extra stability or reduced soil compaction, the AGCO ST47A can accept specialized kits.

Duals: Adding a second set of rear tires improves stability on slopes and spreads the weight. This is helpful during heavy tillage or when using loader attachments.
Tracks: Although not standard, aftermarket track kits exist for compact tractors like the ST47A. Tracks offer better flotation on soft, wet ground and minimize soil disturbance but reduce top speed and turning sharpness.
Flotation Kits: High-flotation tires, such as LSW (Low Sidewall) options, are available for minimal ground pressure. They are useful on turf, golf courses, or wet fields.

Before installing optional kits, ensure your tractor’s axles and hubs are rated for the extra load. Consult your dealer about compatibility and warranty effects.

Table: Optional Tire & Track Solutions

Option	Purpose	Key Benefit	Common Applications
Dual Rear Tires	Stability, load spreading	Better traction, safety	Slopes, loader work
Aftermarket Tracks	Flotation, low compaction	Works in wet/soft soils	Wet fields, construction
Flotation Kits	Reduced ground pressure	Protects turf, minimal ruts	Lawns, turf, soft soil

Dimensions & Weight

The AGCO ST47A tractor was designed for efficiency and maneuverability in various agricultural tasks. Its size, weight, and proportions directly impact how you transport, operate, and maintain the tractor.

Wheelbase

The wheelbase of the AGCO ST47A is 75 inches (190 cm). Wheelbase refers to the distance between the front and rear axles.

This affects how stable the tractor feels, especially when driving on uneven ground. A wheelbase in this range provides a balance between stability and agility, making it easier to handle on small plots or tight spaces.

A medium-length wheelbase helps with overall ride quality and reduces the chance of tipping during turns or on slopes. In practical use, this means you can safely handle a variety of farming implements, from loaders to tillers.

For those who move equipment regularly, the 75-inch wheelbase also helps with trailer loading. It fits easily on many standard flatbed trailers, making transport less complicated.

Overall Length

The AGCO ST47A measures 130 inches (330 cm) in overall length from the front to the back. This length includes the body and standard attachments, but can change if you add larger implements or aftermarket accessories.

A 130-inch long tractor is compact enough for small to medium-sized farms. This makes it easier to store in garages or sheds with limited space.

You can easily navigate through gates and between rows, which helps in orchards or gardens. This size also supports solid weight distribution.

With proper attachments, the length helps to balance loads on the three-point hitch or front loader arms. Handling is straightforward, and you’ll find it easier to avoid obstacles.

Overall Width (Minimum Tread)

The minimum tread width for the AGCO ST47A is 65 inches (165 cm). This is the distance across the tractor at its widest point, usually measured at the outer edges of the tires set at their narrowest configuration.

A width of 65 inches gives you good stability, especially when using heavy rear implements or traveling over rough terrain. Your tractor is less likely to feel “tippy,” which is important for user safety.

You can also adjust the tread setting for your needs by moving the wheels in or out within the range allowed by your axles. The minimum width helps you get through narrow rows and compact farm areas while still keeping safe handling.

Height To ROPS / Cab

The height to the top of the ROPS (Roll-Over Protective Structure) for the AGCO ST47A is 90 inches (228 cm). If you’re storing the tractor indoors, you need to make sure your garage or barn doors are tall enough to clear the ROPS.

A 90-inch height gives you clear sightlines while working, and enough headroom for easy entry and exit. The ROPS is critical for safety, helping to protect you in the event of a rollover.

There is no enclosed cab, only the ROPS. If you add any attachments above the ROPS, like canopies or lights, add their height to the tractor’s total.

Ground Clearance

The AGCO ST47A offers practical ground clearance, helping you pass over small obstacles and rough surfaces without getting stuck. Exact ground clearance can vary depending on tire size and tread configuration.

Adequate ground clearance protects the undercarriage and important components from rocks or debris. It is useful when working in fields with uneven soil, tall grass, or crop rows.

This clearance allows for more versatile operations, such as cultivating hillsides or clearing fields after harvest. If you use larger rear tires, your ground clearance may be slightly greater.

Always check tire settings to get the best results for your needs.

Shipping Weight

Shipping weight for the AGCO ST47A is 3,494 lbs (1,584 kg). This is the dry weight of the tractor without fuel, fluids, or any additional attachments.

Knowing the shipping weight is important when arranging for transportation. You must make sure your trailers, ramps, and equipment can handle the tractor safely.

This weight allows for easy handling with most standard agricultural or flatbed trailers. Light shipping weight means lower transport costs, which can save you money when delivering or moving the tractor, especially for seasonal use or repairs.

Operating Weight (With Fluids)

With all operating fluids—such as engine oil, coolant, and a full fuel tank—the AGCO ST47A’s operating weight is about 3,660 lbs (1,660 kg). This number will increase if you add wheel weights, front loaders, or other attachments.

Operating weight affects traction, balance, and ground compaction. Knowing this number helps you choose the right tires and ballast for your farming needs.

When fully loaded, the extra weight improves pulling power and reduces tire slippage. However, make sure you stay within legal road limits if you are transporting the tractor between sites.

Specification	Measurement
Wheelbase	75 in (190 cm)
Overall Length	130 in (330 cm)
Overall Width (Min. Tread)	65 in (165 cm)
Height to ROPS	90 in (228 cm)
Shipping Weight	3,494 lbs (1,584 kg)
Operating Weight (With Fluids)	3,660 lbs (1,660 kg)
Ground Clearance	Varies (Depends on tire size and settings)

Fuel & Fluids

Managing fuel and fluids is essential for keeping your AGCO ST47A tractor running smoothly. Maintaining each system at the correct levels will help your tractor work efficiently and avoid potential problems.

Fuel-Tank Capacity

The fuel tank on the AGCO ST47A holds enough diesel to get you through a full day of fieldwork before needing a refill. A typical capacity for this model is about 12 gallons (45 liters).

You can run the tractor for several hours—even under heavy workloads—without frequent stops. You should use clean, high-quality diesel fuel.

Keeping the tank free from dirt, water, and debris helps protect the engine and fuel system. Always check the fuel gauge before starting work.

If your tractor sits unused for a while, drain old fuel to avoid problems with starting or poor performance.

Table: Fuel System Specification

Feature	Description
Type of Fuel	Diesel
Tank Capacity	12 gallons (approx. 45 liters)
Best Practice	Use clean, fresh diesel; check for debris

DEF-Tank Capacity (If Applicable)

The AGCO ST47A does not require Diesel Exhaust Fluid (DEF). This tractor model uses a Tier 3 emissions system, so DEF is not part of its design.

There is no DEF tank to refill or maintain. Because no DEF is used, you do not need to worry about monitoring another fluid or keeping an extra tank topped up.

If you upgrade or use newer tractors later, DEF may become important. For the ST47A, you only need to focus on regular diesel fuel.

Table: DEF Requirements

Feature	Description
DEF Required	No
DEF Tank Size	Not applicable
Emission System	Tier 3 (no DEF needed)

Engine Oil Capacity

Your engine oil needs regular checks and changes to keep the engine protected. The AGCO ST47A uses about 1.6 gallons (6 liters) of engine oil.

This includes the oil required for both the engine crankcase and the filter. Use the oil grade recommended in your tractor’s manual, usually a high-quality 15W-40 diesel engine oil.

Always check the oil level before starting the engine. Top up the oil when needed, but do not overfill.

Change the oil and engine oil filter at the intervals indicated by the manufacturer. This is often after every 100 to 200 hours of use, but check your manual for details.

Table: Engine Oil Specifications

Item	Specification
Engine Oil Capacity	1.6 gallons (approx. 6 liters)
Recommended Oil Type	15W-40, quality diesel engine oil
Change Interval	Every 100–200 hours or as per the manual

Hydraulic/Transmission Oil Capacity

The AGCO ST47A uses a combined hydraulic and transmission oil system. The total capacity for this system is about 7.9 gallons (30 liters), but always check your manual for the exact figure for your model.

Use a high-quality, manufacturer-approved universal tractor fluid. Monitor the fluid level regularly.

Low or dirty fluid can cause issues with the transmission, 3-point hitch, or hydraulic implements. Replace the hydraulic/transmission oil and filters as recommended by the manufacturer.

Table: Hydraulic/Transmission Fluid

System	Specification
Fluid Capacity	7.9 gallons (approx. 30 liters)
Recommended Fluid	Universal tractor fluid (per manual)
Change Interval	Per manufacturer recommendations

System/Fluid	Capacity	Type/Notes	Change Interval
Fuel Tank	12 gallons	Diesel only	Fill as needed
DEF	Not applicable	No DEF used (Tier 3 system)	N/A
Engine Oil	1.6 gallons	15W-40 diesel engine oil	Every 100–200 hours
Hydraulic/Transmission	7.9 gallons	Universal tractor fluid	Per manufacturer guidelines

Electrical System

The AGCO ST47A tractor uses a modern electrical system designed for reliable daily operation. Knowing the specifics of the electrical setup helps you maintain your tractor and plan for replacement parts and troubleshooting.

Feature	Specification	Description
Ground Type	Negative Ground	Standard automotive ground system
Alternator / Charging System	Alternator	Provides battery charging and electrical supply while running
Charging Output (Amps)	Approx. 40-60 Amps (typical)	Sufficient for lights, instruments, and starting
Battery Voltage	12 Volts	Standard voltage for compact tractors
Battery CCA Rating	600-800 CCA (recommended)	Supports reliable cold weather starting

Ground Type (Negative / Positive)

Your AGCO ST47A uses a negative ground electrical system. This is the most common ground type in modern tractors and vehicles.

The battery’s negative terminal connects directly to the tractor’s chassis. A negative ground system helps keep electrical components and wiring standardized.

Accessory or replacement parts are easy to source. Any repairs should carefully reconnect the battery with the negative terminal to the chassis to prevent shorts or potential damage to electrical parts.

Alternator / Charging System

The tractor is equipped with an alternator-based charging system. The alternator is belt-driven and keeps the battery charged while the engine is running.

Alternators provide stable voltage and improve electrical supply to headlights, dashboard, and any added accessories. Most AGCO compact tractors in this series use a compact, internal-regulator alternator.

This helps deliver more reliable power and requires less frequent adjustment or maintenance. You should check the belt and connections regularly to ensure the alternator is working efficiently.

Charging Output (Amps)

The charging system on the ST47A typically outputs between 40 and 60 amps. This range supports starting the tractor, running lights, powering the instrument panel, and supporting any extra 12-volt accessories.

A higher amperage alternator can help if you use work lights or powered attachments for long periods. Monitoring the charging system is important.

Low charging output can cause battery drain and starting problems, especially in cold weather or after frequent short trips. Check your owner’s manual for the exact alternator rating for your tractor year and model.

If you experience electrical issues, testing the alternator output with a voltmeter is a good troubleshooting step.

Battery Voltage

The tractor uses a 12-volt battery system, which is standard for compact and utility tractors. This provides enough power for reliable engine starting and supports all lights and electronic accessories.

A 12-volt system is compatible with most aftermarket parts, including lighting, radios, and other add-ons. Replacement batteries and chargers are widely available at auto parts and farm supply stores.

Before installing a new battery, check that the voltage matches the tractor’s system to avoid electrical faults.

Battery CCA Rating

The Cold Cranking Amps (CCA) rating for the ST47A’s battery should fall in the 600 to 800 CCA range. CCA measures the battery’s ability to start the engine in low temperatures.

Selecting a battery with a CCA rating appropriate for your climate is important. If you operate the tractor in cold weather, choose the higher end of the CCA range.

A battery with too low of a CCA rating may not start the engine reliably during winter. Always secure the battery properly and keep terminals clean for best performance.

Total Cost Of Ownership Metrics

Knowing how much you will spend on your AGCO ST47A over time can help you plan your budget. This includes how often you need to service it, expected yearly repair costs, how much it will lose value, and how much fuel you might use.

Metric	Details
Service Interval	Every 50-200 operating hours (see below)
Annual Maintenance Cost	$700 – $1,100 (average, depending on usage)
Depreciation Curve	10%–15% loss per year (first 5 years)
Fuel Use @ Rated Load	5.5–6.0 Liters/hour (approximate)

Recommended Service Intervals

Routine maintenance is needed to keep your tractor running well. Oil changes are recommended every 100 operating hours.

The engine oil filter should also be replaced at this time. You should change the air filter every 200 hours, or sooner in dusty areas.

Check and clean the radiator and fuel filter every 100 hours. Grease all fittings every 50 hours to prevent wear.

Inspect belts, hoses, and electrical systems during each scheduled maintenance. Follow the schedule listed in your owner’s manual for best results.

Estimated Annual Maintenance Cost

Yearly maintenance costs for the AGCO ST47A typically range between $700 and $1,100. This estimate includes oil, filters, fluids, lubrication, and routine inspections.

If you use your tractor hard, or in extreme conditions, you may pay more. Major repairs or tire replacements can raise total costs.

If you do some service yourself, you may pay less than the average. Parts for this model are usually available and priced in line with other tractors of the same size.

Labor rates vary, so check local shop prices to get a more accurate estimate for your area.

Depreciation Curve (% Per Year)

Most new AGCO ST47A tractors lose about 10% to 15% of their original value each year during the first five years. After that, depreciation slows and value levels off, especially if the tractor is well maintained.

If you keep service records and prevent heavy damage, resale values are higher. High hour machines, cosmetic damage, or missing parts can lower the price you get when you sell.

Depreciation depends on demand, overall condition, and model year. Keeping your tractor clean and serviced keeps the depreciation curve lower.

Fuel Consumption @ Rated Load (L Hr⁻¹)

The AGCO ST47A, with its 47 hp Iseki diesel engine, uses about 5.5 to 6.0 liters of fuel per hour under rated load.

Real-world fuel use can be less if doing light work, or higher with heavy implements or uphill driving.

Fuel consumption matters most if you use your tractor for long hours each day.

Track your actual use to predict fuel expenses more accurately.

Clean filters and good tire pressure help improve fuel efficiency.