AGCO ST30x Tractor 28 hp Overview, Features, and Performance Review
AGCO ST30x Tractor 28 hp
The AGCO ST30x is a compact utility tractor designed for a range of tasks on small farms, landscaping projects, and property maintenance.
You get a diesel engine with three cylinders, liquid-cooled for efficient temperature control.
The tractor’s net power output is about 28 hp at 2,500 rpm, with gross power reported at 28.4 hp.
This power level is enough for many light and medium tasks.
The ST30x uses a category I rear hitch with position control, letting you attach a range of implements.
The rear lift capacity is up to 1,984 pounds (899 kg) at the link ends.
This allows you to handle equipment such as rotary cutters, box blades, and tillers.
Attachments for the ST30x include loaders, mower decks, and rear PTO-powered tools.
The dry air cleaner and glow plug pre-heating help ensure reliable starts, even in cold conditions.
The four-wheel drive system helps you maintain traction on uneven or wet terrain.
This makes the tractor easier to use in different environments, including muddy or hilly ground.
Your controls on the tractor are straightforward and easy to learn.
Most owners find maintenance access direct, with clearly marked fluid and filter locations.
AGCO ST30x Tractor 28 hp – Key Specifications and Features
| Feature | Specification |
|---|---|
| Engine | 3-cylinder diesel, liquid-cooled |
| Power (Net) | 27.6 hp |
| Power (Gross) | 28.4 hp |
| Rear Hitch | Category I, position control |
| Rear Lift Capacity | 1,984 lbs (899 kg) |
| PTO Options | Rear PTO |
| Attachments | Loader, mower, box blade, tiller |
| Drive System | 4WD |
| Air Cleaner | Dry |
| Pre-Heating | Glow plugs |
Production & Identification
The AGCO ST30x is a 28-horsepower compact utility tractor built for reliability and versatility in small farm and property operations.
Its specific make, model, years, and features are important for owners and buyers who want clear identification and history.
| Topic | Details |
|---|---|
| Manufacturer / Brand | AGCO Corporation; Designed and built by Iseki (Japan) |
| Model Number / Series | ST30x, part of the AGCO ST “ST Series” |
| Factory of Manufacture | Iseki factory in Japan |
| Years Produced | Early 2000s; most sources indicate 2001-2004 |
| Original List Price | Approx. $15,000–$17,000 (early 2000s, varies with features) |
| Serial-Number Location | Mainly on the frame or near the rear axle, often on a riveted plate |
Manufacturer / Brand
You get a machine from AGCO Corporation, a major U.S.-based global farm machinery company.
The ST30x is part of their line of compact utility tractors.
This tractor was designed and produced by Iseki, a respected Japanese manufacturer known for quality small tractors.
AGCO worked with Iseki on several models, especially in the ST Series.
Iseki’s experience brought reliability, proven engineering, and advanced features.
Ownership and parts support often come from AGCO’s dealer network in North America, but parts can also cross-match with Iseki’s equivalents.
Model Number / Series
The model is ST30x, and it belongs to the AGCO “ST Series” of compact tractors.
This series targets small farm, landscaping, and estate work.
Within this series, the ST30x stands out with its 28-horsepower, three-cylinder diesel engine.
The ST prefix stands for “Small Tractor.”
Other nearby models in the series included different power ratings (like ST22, ST35) but share many parts and design elements.
Some internal documents or listings refer to its Iseki code as either E3CE or E3CF, connected to its engine type.
Factory Of Manufacture
All AGCO ST30x tractors were manufactured at Iseki’s main factory in Japan.
Iseki is a well-known Japanese company with decades of expertise building compact tractors.
Your tractor’s Japanese build is visible in its fit and finish as well as its serial number format.
The Iseki factory produced these for various brands, but the AGCO version features different branding and paint.
Years Produced
The AGCO ST30x rolled off the line in the early 2000s, during the time AGCO worked actively with Iseki.
Most sources note a production window from 2001 to around 2004.
This model replaced earlier compact AGCO units and was itself replaced by newer models as emissions laws and design trends changed.
If you are looking for a specific year, the serial number and registration documents will help identify your tractor’s exact production date.
Original List Price (Launch Year)
When new, the original list price for the ST30x in North America was typically $15,000 to $17,000 USD, depending on features like attachments or a front loader.
Additional options such as a mid-mount mower, loader, or different tire types could raise this price.
Prices varied depending on local dealer, year, and whether you chose packages or add-ons.
Used prices depend on condition and included implements.
Serial-Number Location
The serial number on the AGCO ST30x is important for parts ordering and identification.
You can usually find it on a metal plate riveted to the frame, commonly on the right side of the tractor near the rear axle housing.
It may also appear under the seat or on the transmission housing.
Look for a stamped or engraved plate—never remove it, as this is key for resale and warranty.
Have the serial number handy when you call for parts or service support.
| Subsection | Key Points |
|---|---|
| Manufacturer/Brand | AGCO, produced by Iseki in Japan; Iseki expertise in compact tractors; AGCO provides support/branding. |
| Model/Series | ST30x, part of AGCO ST Series; 28 hp; also referenced by Iseki engine codes E3CE/E3CF; similar to Iseki models |
| Factory | Assembled at Iseki’s Japanese plant; high construction standards; serial numbers reflect Japanese origin |
| Years Produced | Built 2001-2004 (approx.); replaced older AGCO compacts; production coincided with AGCO-Iseki partnership |
| Original Price | Roughly $15K-$17K in U.S.; price based on features and dealer; options/implements would increase cost |
| Serial Number | Found on frame/rear axle; metal plate; crucial for parts/service; do not remove |
Engine Specifications
The AGCO ST30x tractor is powered by a compact, fuel-efficient diesel engine designed for steady and reliable performance.
Key details include precise engine size, cylinder configuration, cooling system, and detailed horsepower and torque ratings.
Engine Make & Model
The AGCO ST30x uses a diesel engine with proven reliability for agricultural use.
The engine is designed by Iseki, which is known for producing engines that fit compact tractors and light utility machines.
You will find this engine type common in similar models from comparable brands, helping ensure steady parts availability and compatibility.
Under the hood, the model designation for the engine used in the ST30x is Iseki E3CF, though this can vary by production year.
The engine is specifically engineered for the power and torque needs of a small tractor, with features like a direct-drive system for improved efficiency.
Fuel Type & Emissions Tier
You will operate the AGCO ST30x on diesel fuel, designed for durability in tough working conditions.
Diesel as a fuel type allows for longer running times and greater torque at low RPMs, making it suited for agricultural work.
The engine uses an indirect injection fuel system, which relies on glow plugs for starting, especially in cold weather.
Regarding emissions, the AGCO ST30x engine is not classified under the most recent Tier 4 or Stage V standards.
Instead, it predates modern emission labels and meets basic EPA requirements for its size and release period.
This means you will not find components like diesel particulate filters (DPF) or selective catalytic reduction (SCR) in this engine layout.
Cylinders / Displacement
The engine has 3 cylinders arranged in a straight (in-line) configuration.
This layout balances performance and fuel economy, which is important for a compact tractor that might see long operating hours.
Fewer cylinders help reduce engine maintenance and part complexity.
The total engine displacement is 1.5 liters (approximately 89 cubic inches).
This displacement gives you a balance between enough torque for demanding tasks and manageable fuel use.
The 3-cylinder, 1.5L specification ensures smooth operation and good reliability under load, with plenty of reserve for implements like mowers and loaders.
Rated Horsepower (Gross & Net)
The AGCO ST30x is rated for a gross engine power of 28.4 horsepower (21.2 kW) at 2500 RPM.
The net power, which considers energy lost to essential engine operations, is 27.6 horsepower (20.6 kW).
These ratings provide a clear picture of usable power when you are working with attachments or driving in different conditions.
Gross horsepower is the total output before any losses, while net horsepower is what you have available after engine-driven accessories are powered.
This makes the AGCO ST30x suitable for light to moderate tillage, mowing, and hauling tasks.
Peak Torque (Nm @ rpm)
Torque is a crucial measure of an engine’s pulling and working power, especially for implements and tough terrain.
The AGCO ST30x diesel engine produces peak torque in the low-to-mid RPM range, which is optimal for tractor tasks.
Specific peak torque values are not widely published for the ST30x, but based on similar 1.5L 3-cylinder diesel engines, you can expect peak torque to be between 70–90 Nm (Newton-meters) delivered at approximately 1600–1800 RPM.
This helps the tractor maintain steady speed and traction even when dealing with heavy loads or challenging soil conditions.
Compression Ratio
The engine uses a high compression ratio typical of diesel engines.
For the AGCO ST30x, this ratio is about 22:1 to 23:1.
High compression in diesel engines allows for efficient combustion and better thermal efficiency, which means more power and torque without increasing fuel consumption.
This compression ratio also helps with cold starts, although glow plugs assist with ignition in particularly cold environments.
Diesel engine glow plugs are important for pre-heating the combustion chamber, so you can rely on this tractor to start even when temperatures drop.
Cooling System & Capacity
The AGCO ST30x uses a liquid-cooled engine system to regulate temperature and prevent overheating during prolonged operation.
The cooling system is robust for a tractor of this size, using a radiator, water pump, and thermostat for effective thermal management.
You will need to maintain the correct coolant level for proper performance.
Cooling system capacity is approximately 5–6 liters (about 1.3–1.6 gallons).
Regular checks and top-ups are important, especially in hot weather or during extended use, to keep the engine running within the optimal temperature range.
AGCO ST30x Engine Specifications Summary Table
| Specification | Detail |
|---|---|
| Engine Make & Model | Iseki E3CF (varies by year) |
| Fuel Type | Diesel |
| Emissions Tier | Pre-Tier 4, basic EPA standards |
| Injection System | Indirect Injection (uses glow plugs) |
| No. of Cylinders | 3 (in-line) |
| Displacement | 1.5 L (89 cu in) |
| Horsepower (Gross/Net) | 28.4 hp/27.6 hp (21.2/20.6 kW) @ 2500 RPM |
| Peak Torque | ~70–90 Nm @ 1600–1800 RPM |
| Compression Ratio | 22:1 to 23:1 |
| Cooling System | Liquid-cooled; radiator, water pump, thermostat |
| Coolant Capacity | 5–6 liters (1.3–1.6 gallons) |
| Glow Plugs | Yes, used for cold starts |
Power Take-Off (PTO)
The AGCO ST30x tractor features a rear power take-off designed for a range of implements.
It is built to handle common attachments and small farm equipment efficiently.
Understanding its PTO horsepower, type, and speed options helps you match this tractor to your needs.
Claimed PTO Horsepower
The AGCO ST30x offers an engine rated at 28 horsepower. The claimed PTO horsepower is slightly lower due to power transmission losses from the engine to the PTO shaft.
PTO horsepower is important because it tells you how much usable power is available for running equipment, such as mowers or tillers. For the ST30x, the PTO horsepower usually falls between 22 and 24 hp, depending on how the tractor is configured.
This range makes the tractor well-suited for tasks on small to medium properties. You can run implements like rotary cutters, finish mowers, or small balers without overwhelming the tractor.
Key benefits of knowing the PTO horsepower:
- Allows you to select implements that match the tractor’s capacity
- Prevents overloading and potential damage to your equipment
- Ensures efficient operation for common tasks
PTO Type (Independent / Live / Economy)
The ST30x features a rear PTO that is transmission-driven in gear models and can be independent in hydrostatic models. In the transmission version, you must use the clutch to start and stop the PTO.
This is known as a live PTO, which lets you control the PTO separately from the tractor motion using a two-stage clutch. Independent PTOs use a dedicated lever, allowing you to engage and disengage the PTO at any time, even if the tractor is not moving.
Transmission-Driven (Live):
- Requires using the clutch to engage/disengage
- Common on gear drive ST30x models
Independent:
- Operates with a separate lever or switch
- Found on hydrostatic drive versions
If you need frequent control of attachments, the independent PTO system provides greater flexibility and ease of use.
PTO Speeds (540 / 1 000 rpm)
The AGCO ST30x is equipped with a rear PTO that operates at 540 rpm. This is the most common speed used for compact tractors and matches the requirements for most farm implements.
The PTO achieves its 540 rpm output at an engine speed of around 2327 rpm, which is important for you to know when setting your engine throttle correctly. Some models come with an optional mid-PTO feature, which can power mid-mount mowers or other implements, but the primary rear PTO is 540 rpm only.
The ST30x does not offer a 1,000 rpm PTO option, so you’ll need different equipment for that speed.
PTO speed chart for the AGCO ST30x:
| PTO Location | Speed (rpm) | Engagement Method | Usage |
|---|---|---|---|
| Rear | 540 | Transmission/Independent | Most rear implements |
| Mid (option) | 2000 (approx) | Independent (optional) | Mid-mount mower (if equipped) |
Key PTO Specifications Table
| Feature | Details/Options |
|---|---|
| Claimed PTO HP | 22–24 hp (varies by transmission) |
| PTO Type | Transmission-live / Independent |
| Engagement | Clutch (live) / Lever (independent) |
| Rear PTO Speed | 540 rpm |
| Engine RPM for 540 | 2327 rpm |
| Mid PTO | Optional (some models) |
Transmission & Drivetrain
The AGCO ST30x comes equipped for practical, everyday farm work. You get a straightforward gear-driven system, smooth control, and options that fit different needs.
Transmission Type (Syncro, Powershift, CVT, HST)
You will find a manual gear transmission on the AGCO ST30x. This system is often called a syncro or gear-type transmission.
It means you select gears manually using the shift lever. There are no automatic or hydrostatic (HST) options.
This type of transmission is valued for its simplicity, durability, and direct control. A manual gear system is easy to service and repair.
You can expect consistent power delivery, which is useful for both field and utility work. The transmission setup is ideal for tasks like tilling, moving trailers, or general hauling on the farm.
With manual gears, you will need to stop or slow down to change gears, but this is standard for this class of tractor. There are no advanced features like clutchless shifting or variable speeds.
Number Of Gears / Ranges
The AGCO ST30x offers a 9-speed manual transmission. You have three ranges, each with three forward gears, giving you flexibility in speed control and pulling power.
In addition to the nine forward gears, there are three reverse gears. You can choose the right speed for any task—slow for heavy work or fast for light travel.
This arrangement covers most jobs you will face on a small farm or acreage. Gear shifting follows a logical pattern, usually with a range lever and a gear lever.
The number of gears means you can find a balance between torque and speed. This helps protect the engine and improves traction when you need it.
Top Transport Speed
Transport speed for the AGCO ST30x varies based on tire size and gear selection, but it generally reaches between 12 and 16 miles per hour (mph) (about 19–25 km/h). This speed lets you move efficiently around the farm or between fields without sacrificing control.
You can select higher gears for travel on roads or farm lanes. Lower gears are needed for work in soft or hilly areas.
The tractor is not designed for highway use, but its top speed is enough for routine moves. Safe transport depends on the load and surface.
At top speed, you should avoid heavy loads or rough ground to prevent damage and stay safe.
Drive (2WD / 4WD / AWD)
You can find the AGCO ST30x set up as 2WD (two-wheel drive). Some models and listings may offer 4WD (four-wheel drive), which gives you better traction for heavy tasks, soft soil, or slopes.
In standard 2WD, the rear wheels provide all the power. This is enough for flat ground and light work.
If you need more grip or stability, a 4WD model is preferred, especially in muddy or uneven areas. Most buyers choose 2WD for general chores.
You should look for a 4WD if you often deal with tough terrains or need extra pulling power. No all-wheel drive (AWD) option is available.
You select drive type based on your local land and typical jobs.
Differential-Lock & Final Drives
The AGCO ST30x is commonly equipped with a differential lock. This feature lets you lock both rear wheels together for improved traction on slippery or soft ground.
You use a foot pedal or lever, and the lock is only engaged when needed. Final drives on this tractor use gear reduction.
This reduces gear stress and improves durability under load. The design is standard for small tractors and allows the AGCO ST30x to handle heavy tasks without excess wear.
A differential lock is important for farm work where one wheel may slip before the other. It gives you control and keeps you moving in bad conditions.
The strong final drives work quietly and need little service, adding to the reliability of the tractor.
| Feature | Specification / Notes |
|---|---|
| Transmission Type | Manual (Gear / Syncro), No HST, Powershift, or CVT available |
| Number of Gears / Ranges | 9 Forward / 3 Reverse (3 Ranges with 3 Gears each) |
| Top Transport Speed | 12–16 mph (19–25 km/h), varies by tire and gear |
| Drive Options | 2WD standard, 4WD optional on some units |
| Differential Lock | Yes, pedal or lever activated, for tough traction situations |
| Final Drives | Gear reduction style, built for strength and low maintenance |
Steering & Brakes
The AGCO ST30x tractor uses a power steering system designed for smooth handling and operator control. Braking is achieved with reliable wet disc brakes made for agricultural use.
Both features support precise movement and safety during fieldwork.
Steering System (Hydrostatic / Power-Assisted / Mechanical)
You get power steering with the AGCO ST30x, making it much easier to control in tight spots or tough ground. Power steering means you do less work when turning the wheel, even with heavy loads.
The system combines hydraulic power and precision so you can turn smoothly with reduced physical effort. This type of steering helps prevent fatigue during long hours in the field.
It also keeps steering consistent and predictable, whether you are going slow or fast. Mechanical steering systems offer good control, but power-assisted steering, like on the ST30x, offers clear benefits for most users.
Hydraulically assisted steering needs regular checks on fluid levels to stay smooth. If you notice more resistance or noise, you should inspect the steering system for leaks or worn parts.
Turning Radius (With Brakes)
The turning radius of the AGCO ST30x is tight to let you maneuver easily in small fields or around obstacles. Using the brakes while steering, often called “turning on the brakes,” lets you make sharper turns.
This is especially useful for row-crop work or when space is limited. Turning with brakes engages the inside wheel brake, allowing the tractor to pivot more quickly.
The ST30x’s steering system and brake setup work together to improve turning efficiency. This matters for work in orchards, gardens, or tight barnyards.
Machine operators should apply gentle, even pressure on the brakes during turns. This prevents skidding or soil damage.
Service Brakes (Wet Disc, Dry Drum, etc.)
The ST30x comes with wet disc brakes for service braking—meaning stopping and slowing when moving. Wet disc brakes are located inside a sealed housing with oil, which keeps them cool and reduces wear over time.
This makes regular operation smoother and lowers the risk of sudden brake failure. Compared to dry drum brakes, wet disc brakes perform better in mud, water, and dusty conditions.
They are less likely to fade with heavy use, giving you reliable stopping power in all seasons. Wet disc brakes also require less frequent adjustment.
Routine brake checks are still essential. If your brake pedal feels soft or travel increases, have the brakes serviced right away.
Parking Brake Type
The parking brake on the AGCO ST30x is usually a mechanical lever-operated system. You set the brake by pulling a handle or lever, which locks the tractor wheels in place.
This design keeps the machine stationary when parked, on slopes, or during maintenance. Mechanical parking brakes are simple to engage and release.
They rarely fail if used and maintained properly. Always make sure the parking brake is fully engaged before leaving your tractor.
Regular inspection of cables and locking mechanisms helps keep it reliable. If you notice any rolling after setting the brake, have it adjusted.
| Feature | Details |
|---|---|
| Steering System | Power steering (hydrostatic assist) for easy control |
| Turning Radius (With Brakes) | Tight; uses brake-assisted turning for sharper pivots |
| Service Brakes | Wet disc type; oil-cooled for smooth, long-lasting braking |
| Parking Brake Type | Mechanical lever style; manually engaged/disengaged |
| Maintenance Notes | Check steering fluid and inspect brake pads/links regularly |
Cab & Operator Station
Comfort, safety, and productivity on the AGCO ST30x are shaped by features like operator protection, seating, temperature management, and noise levels. These elements influence your working experience during long hours.
| Feature | Details |
|---|---|
| ROPS / Cab Option | Standard ROPS, No Enclosed Cab |
| Climate Control | No A/C or Cab Heater; open-air; basic dust protection |
| Seat & Suspension | Adjustable high-back seat, spring suspension |
| Noise Level (dB A @ Operator) | 80-85 dB(A) typical for open station compact tractors |
ROPS / Cab Option
You get a standard ROPS (Rollover Protective Structure) on the AGCO ST30x. There is no factory-installed enclosed cab, so your operator station remains open air.
ROPS helps protect you if the tractor rolls or tips by creating a safety zone. The certified steel frame resists deformation under most overturn conditions.
Some users add aftermarket weather canopies or sunshades for basic weather protection. These add-ons don’t fully enclose you or give full cab protection, but they do make operating in the sun or light rain easier.
Climate Control (A/C, Heater, Filter)
Since the AGCO ST30x doesn’t offer a cab, there is no integrated air conditioning or heater. The operator station is open, which means you get fresh air at all times, but you’re also exposed to outside temperatures and weather.
There are no factory-installed air filters for dust or pollen, except for the engine air intake. This could be important if you have allergies or use the tractor in dusty conditions.
If you work in cold weather, you’ll need to dress warmly, and in hot weather, you may want a sunshade or take breaks to avoid overheating. Personal protective equipment, like hats or fans, can help improve comfort.
Seat & Suspension
The seat features a high-back design and is adjustable forward and back to suit different driver heights. It uses mechanical spring suspension to reduce vibration from bumpy fields and rough terrain.
You can adjust the tension of the springs for your weight, which helps support your back and legs. Thick foam padding offers extra comfort for longer tasks.
There are no advanced features like air suspension or armrests. The controls are placed within easy reach, letting you operate the tractor without excess movement or strain.
Noise Level (dB A @ Operator Ear)
When you’re operating the AGCO ST30x, noise levels typically range from 80 to 85 decibels at the operator’s ear. This is standard for open station compact utility tractors with diesel engines.
You’ll hear engine noise, mechanical sounds, and any attached implements working. Prolonged exposure at these noise levels may require hearing protection to reduce risk of hearing damage.
There are no sound insulation or noise-reducing features, so sound is only limited by the design of the engine and exhaust. Using ear plugs or earmuffs can make long work sessions more comfortable.
Hydraulics
The AGCO ST30x uses an open-center hydraulic system. This helps deliver steady and smooth control for implements and attachments.
System Type (Open-Center / Closed-Center / PFC)
The ST30x features an open-center hydraulic system. In an open-center system, hydraulic fluid flows continuously through the system and back to the reservoir when valves are not activated.
This type is common in smaller tractors because it is simple and reliable. You do not get pressurized fluid until you operate a control valve.
This setup is good for running implements that need constant flow instead of high, variable pressure. It is straightforward to maintain and repair.
The open-center design suits the compact size and 28 hp engine of the ST30x. It is less complex than a closed-center or PFC (Pressure and Flow Compensated) system.
Implement Pump Flow (L min⁻¹)
The implement pump flow is crucial because it determines how quickly hydraulic-driven tools can work. For the AGCO ST30x, the main hydraulic pump delivers a flow of 22.7 liters per minute (6.0 gallons per minute).
This flow rate is enough for most light to medium-duty implements like front-end loaders, smaller rear attachments, and hydraulic cylinders. It allows you to lift, tilt, and move attachments smoothly.
Manufacturers recommend checking your implement’s requirements before connecting. If your tool needs more flow than 22.7 L/min, it may operate slowly or not at all.
Steering Pump Flow (If Separate)
On the ST30x, the main and steering pump flows are often shared rather than fully independent. The tractor is designed so that both steering and implement use draw from the same hydraulic reservoir and system.
When you operate the steering, some flow will be allocated there first. This can slightly reduce available flow to implements during sharp turns or heavy steering.
There is no separate specification for a dedicated steering pump flow on the ST30x. All tasks rely on the combined capacity of the hydraulic pump.
Total Combined Flow
The total combined hydraulic flow for the ST30x is 32.2 liters per minute (8.5 gallons per minute). This figure measures the joint flow used by both implements and steering together.
High combined flow allows for simultaneous operation if you are steering and using a loader or another hydraulic attachment at the same time. You benefit from smoother multitasking, especially when doing tasks that need both steering and implement control.
System Pressure (bar / psi)
The ST30x’s hydraulic system runs at a maximum pressure of 2130 psi (146.9 bar). This pressure helps produce the needed force for lifting and operating hydraulic implements.
A higher system pressure means more lifting power, but demand is kept in balance with flow to prevent system damage. At 2130 psi, you get enough pressure for simple loaders and medium attachments without stressing the system.
Users should make sure all hydraulic hoses, cylinders, and couplings match or exceed this pressure rating. Using components not rated for 2130 psi can result in leaks or equipment failure.
Remote Valves (Number & Type)
Remote hydraulic valves let you connect extra implements, like rear mowers or loaders, and control them from the driver seat. On the ST30x, there is usually one or two remote hydraulic valves.
These are standard, single-acting or double-acting valves. Single-acting valves move hydraulic fluid in one direction, while double-acting move it both ways for more control.
You should check which type your tractor has, especially if adding implements that need a double-acting circuit. It is also possible to add more remotes with aftermarket kits if needed for extra equipment or advanced attachments.
AGCO ST30x Hydraulics Summary Table
| Feature | Specification | Description |
|---|---|---|
| Hydraulic System Type | Open-Center | Continuous flow, simple design, suits most attachments |
| Implement Pump Flow | 22.7 L/min (6.0 gpm) | Main pump capacity for implements and attachments |
| Steering Pump Flow | Shared/Common with implement | No separate steering pump; all flow from main hydraulic system |
| Total Combined Flow | 32.2 L/min (8.5 gpm) | Maximum combined capacity for steering and implements at same time |
| System Pressure | 146.9 bar (2130 psi) | Maximum operating pressure |
| Remote Valves | 1–2 (Single/Double-acting, standard) | For connecting and controlling additional hydraulic implements |
Three-Point Hitch (3PH)
The AGCO ST30x uses a rear three-point hitch that offers good flexibility for many implements. It is built for small to mid-size operations, supporting a range of attachments like blades, mowers, and box scrapers.
| Feature | Details |
|---|---|
| Hitch Category | Category 1 |
| Lift Capacity | About 1,300-1,500 lbs (at ball ends, varies by condition) |
| Draft / Position Control | Mechanical position control; no electronic draft control |
| Top-Link Sensing | Not equipped; operates on standard top-link connection |
Hitch Category (1 / 1N / 2 / 3)
The AGCO ST30x uses a Category 1 three-point hitch. Category 1 hitches are common on compact and utility tractors in the 20-45 horsepower range.
Arms have 7/8-inch diameter lower link pins and handle a wide selection of small to mid-size implements. You can attach implements like rotary tillers, rear blades, and seeders.
Category 1 is ideal for small-acreage farms, landscaping, and general property maintenance. Always check that your attachments match the Category 1 profile for safe use.
Lift Capacity @ Ball Ends
The three-point hitch on the ST30x can lift about 1,300 to 1,500 pounds at the ball ends under good conditions. This rating is enough for many standard attachments used on small and medium properties.
If you plan to use heavier implements, check the specific lift capacity for your machine as it may vary depending on wear and hydraulic condition. Lift at the ball ends gives you the strongest lift point.
As you move away from the hitch, the capacity drops slightly. Always reference your operator’s manual for the exact number, as it can differ between models and years.
Draft / Position Control
Position control on the ST30x lets you set how high or low your implement sits, which is useful for grading, mowing, or planting. You can raise or lower your attachment to a consistent height every time you operate the lever.
The ST30x does not include electronic draft control, commonly found on larger tractors. Since this tractor uses position control only, it means you must manually adjust the hitch height as you work.
Top-Link Sensing (Yes/No)
Top-link sensing is not installed on the ST30x. Standard three-point hitches use a mechanical top link for connecting implements and adjusting their tilt.
The lack of top-link sensing means there is no built-in system to automatically adjust for changes in ground conditions or implement angle. You will adjust the top link manually to set the tilt of the tool.
Axles & Load Limits
Understanding axle limits and the drive system helps you safely operate the AGCO ST30x. Weight distribution and the type of axle design affect stability, traction, and how much you can carry or pull.
| Feature | Spec/Details |
|---|---|
| Maximum Front-Axle Load | Not specifically published (see below) |
| Maximum Rear-Axle Load | 1,876 kg (full tractor max weight) |
| Rear Axle Flange | Flange type |
| Ground Clearance | 30 cm (12 inches) |
| Front Tread | 96 cm (37.8 in) |
| Rear Tread | 109 cm (43.1 in) |
| Final Drive Type | Most models use gear/reduction axles |
Maximum Front-Axle Load (kg)
The exact maximum front-axle load for the AGCO ST30x is not directly published by the manufacturer. However, you can estimate it based on the overall tractor weight and typical load distribution.
The tractor weighs about 899 kg (1,984 lbs) without implements. With a front loader or ballast, the front axle supports much of the added load.
If you install a front-end loader, always refer to your loader’s manuals for limits and avoid exceeding the tire and axle ratings. Keep the combined weight of attachments and tractor within the total maximum allowed (around 1,876 kg/4,136 lbs).
Distributing weight evenly across both axles is important to avoid overstressing the front end.
Maximum Rear-Axle Load (kg)
Rear axles on compact utility tractors like the AGCO ST30x are designed for carrying heavier loads compared to the front. The maximum total safe weight of the tractor is 1,876 kg (4,136 lbs).
This includes the base weight, operator, fuel, and any rear-mounted implements like mowers, tillers, or weights. Rear axle load increases significantly with large implements or heavy drawbar loads.
Pay careful attention if using rear ballast, as too much weight can strain the axle and wheel hubs. Check tire ratings before adding extra weight and note that some implements have their own specific limits.
Proper tire inflation helps maintain rear axle integrity under load.
Final-Drive Type
The AGCO ST30x uses a flange-type rear axle. This final-drive configuration is typical for compact tractors and provides a strong, simple method for mounting wheels and handling loads.
Flange axles assist with the even distribution of power from the transmission to the wheels. Nearly all ST30x tractors have a gear-driven reduction axle system that adds durability and reliability.
Gear reduction in the final drive lowers wear on the drivetrain when you pull loads or operate attachments. Combined with a ground clearance of 30 cm (12 in), you get stability and traction for most agricultural tasks, even on uneven terrain.
Tires & Track Options
The AGCO ST30x Tractor offers multiple tire choices to fit different ground conditions and tasks. You can choose from agricultural, turf, or industrial options and customize the setup with duals or flotation kits.
Standard Front Tire Size (Ag / Turf / Industrial)
The front tires of the AGCO ST30x are available in several types to match your needs. For general fieldwork, agricultural (Ag) tires usually measure around 6.00-12.
These have a deep tread that gives you more grip on soil and loose ground. If you work mostly on grass or lawns, the turf tire option is designed to protect the surface and comes in sizes like 23×8.50-12.
These have a shallower tread and a wider profile for lower ground pressure. Industrial front tires are also available, sized at around 23×8.50-12.
These are made with thicker rubber and a strong tread, providing better durability on gravel or hard surfaces and improved stability.
Standard Rear Tire Size
The rear tires are larger for carrying more weight and providing better traction. For AGCO ST30x, the most common ag tire size at the back is 9.5-16.
This is ideal if you plan to use the tractor for tillage or field tasks. If you need to protect lawns, the turf rear tire size is usually 33×12.50-16.5.
These help spread out the tractor’s weight, so you do not damage grass or soft ground. Industrial rear tires often match the turf size, usually around 33×12.50-16.5.
Made from tough compounds, they support heavy work on construction sites, gravel paths, or when hauling loads.
Optional Duals / Tracks / Flotation Kits
AGCO ST30x does not come standard with dual wheels, tracks, or flotation kits. These options are available from aftermarket suppliers.
Adding dual rear tires helps you with extra grip. This can be useful in muddy or uneven fields.
Some users install flotation kits if they need to work on soft, sandy, or marshy ground. These kits widen the tire surface and help prevent the tractor from sinking.
Rubber tracks are not a factory option for the ST30x. Aftermarket suppliers offer track systems that can be fitted when you need maximum ground contact and reduced soil disturbance.
| Option Type | Front Size(s) | Rear Size(s) | Notes / Uses |
|---|---|---|---|
| Ag Tires | 6.00-12 | 9.5-16 | Best for fieldwork and soil traction |
| Turf Tires | 23×8.50-12 | 33×12.50-16.5 | Protects grass/lawns |
| Industrial Tires | 23×8.50-12 | 33×12.50-16.5 | For hard surfaces and durability |
| Dual Rear Wheels | n/a | Aftermarket options | Adds traction, helps in mud |
| Flotation Kits | Aftermarket variations | Aftermarket variations | Prevents sinking on soft ground |
| Rubber Tracks | Aftermarket options | Aftermarket options | For minimal soil disturbance |
Dimensions & Weight
Understanding the size and weight of the AGCO ST30x tractor can help you determine if it fits well with your equipment needs or property size. Knowing the tractor’s exact measurements ensures it can move in your workspace and handle the tasks you require.
| Feature | Specification |
|---|---|
| Wheelbase | 64.6 inches (164 cm) |
| Overall Length | 116.5 inches (295 cm) |
| Overall Width | 55.6 inches (141 cm) |
| Height to ROPS | 79.3 inches (201 cm) |
| Ground Clearance | 12 inches (30.5 cm) (approx) |
| Shipping Weight | 1,984 lbs (900 kg) |
| Operating Weight (wet) | ~2,100 lbs (est.) |
Wheelbase
The AGCO ST30x features a wheelbase of 64.6 inches (164 cm). This measurement indicates the distance between the front and rear axles.
With a wheelbase of this size, you get a balance between maneuverability and stability. A longer wheelbase often means better handling when hauling or using implements.
For property owners, this size also makes turning in tight areas feasible. It still provides a stable base for heavy work.
You should consider the wheelbase when evaluating storage needs or transportation. A longer wheelbase can affect how the tractor fits onto trailers or into sheds.
Overall Length
The overall length of the AGCO ST30x is 116.5 inches (295 cm). This is measured from the front of the tractor to the back.
Length plays a role in storage planning and maneuvering in barns or garages. At just under 10 feet, this tractor fits in most standard storage spaces for small to mid-size farm equipment.
If you regularly attach long implements to the rear, remember to factor in extra space. This measurement is helpful for transport planning, especially if you tow the tractor between locations or onto trailers.
Overall Width (Minimum Tread)
The minimum tread width of the AGCO ST30x is 55.6 inches (141 cm). This is the distance between the outer edges of the tires at their narrowest setting.
The narrow width helps if you’re navigating between rows or in areas with limited space, such as orchards or gardens. It also affects your stability on slopes, so knowing your terrain is important.
Some owners might adjust the rear wheels outwards for better stability if the soil conditions or slopes require it. Width also impacts transport and storage, ensuring the tractor can get through gates and fit neatly where you need it.
Height To ROPS / Cab
The height of the AGCO ST30x to the top of the ROPS (Roll Over Protection Structure) is 79.3 inches (201 cm). The ROPS bar is a safety feature that keeps you protected in case the tractor tips.
This height helps you decide if the tractor fits into existing barns or storage sheds, especially those with low doorways. Always include the ROPS in your calculations rather than the hood, since the ROPS is the tallest fixed point.
If your tractor has a canopy or cab roof, the height may be a little higher. For work under trees or inside low spaces, keep this height in mind to prevent damage.
Ground Clearance
The AGCO ST30x offers a ground clearance of about 12 inches (30.5 cm). Ground clearance is the distance from the lowest part of the tractor (not counting the tires) to the ground.
This clearance allows you to work in rough or uneven fields without catching the undercarriage on rocks or debris. Higher clearance is especially useful for row-crop work, light tillage, or mowing over growth and brush.
If you operate in muddy, soft, or rutted areas, you might value a tractor with good clearance like this model. It reduces the chance of getting stuck.
Shipping Weight
The shipping weight of the AGCO ST30x is 1,984 lbs (899 kg). Shipping weight refers to the weight of the tractor without fluids, such as fuel, coolant, or oil, and without additional equipment or attachments.
This lighter base weight makes transportation easier and can lower shipping costs if you order or relocate the tractor. The lighter weight also makes the tractor easier to handle on delicate turf or soft ground, reducing compaction.
If you plan on adding larger implements or carrying heavy loads, remember that shipping weight does not include anything you may bolt or attach after delivery.
Operating Weight (With Fluids)
The operating weight (wet weight) of the AGCO ST30x reaches about 2,100 lbs, including standard fluids like fuel, oil, and coolant. This total lets you know how heavy the tractor will be during daily use.
Operating weight is important for determining the right trailer size or lifting equipment when moving the tractor. It also affects soil compaction, so lighter tractors like the ST30x are a good fit for gardens, turf, and small acreage farms.
Knowing the full loaded weight is also key if you plan on adding attachments or towing loads. This ensures safety and stability while working.
Fuel & Fluids
Proper maintenance of the AGCO ST30x means understanding the correct types, amounts, and care for all major fluids. Below you’ll find specific details to help with daily checks, refills, and routine service.
Fuel-Tank Capacity
The AGCO ST30x uses diesel fuel and features an indirect injection fuel system. The standard fuel tank capacity for this tractor is approximately 7.9 gallons (30 liters).
Using clean, high-quality diesel helps prevent injector and filter issues. Always keep the cap tightly sealed to avoid dirt or water contamination.
For best results, refuel when the tank drops to about a quarter full. This reduces the risk of air entering the system, especially on sloped terrain or during heavy work.
Watch for any signs of leaking around the tank or lines. Diesel fumes, visible drips, or fuel on the ground should be addressed before operating.
DEF-Tank Capacity (If Applicable)
The AGCO ST30x does not use a DEF (Diesel Exhaust Fluid) system. You don’t need to worry about refilling or maintaining a DEF tank.
DEF systems are often found on newer, larger tractors that meet more stringent emissions requirements. Because the ST30x tractor is a compact 28 hp model and lacks these advanced emissions controls, DEF fluid is not needed.
There are no DEF indicators or fill points on this model. This simplifies everyday maintenance.
You only need to focus on proper diesel fuel without checking or storing DEF.
Engine Oil Capacity
Your AGCO ST30x engine requires regular oil changes for long life and reliable operation. The engine oil capacity is typically 4.2 quarts (4.0 liters) with a standard oil filter installed.
Always use the oil type and grade recommended in your owner’s manual, which is usually SAE 15W-40 for diesel engines. Check the oil level with the dipstick before use.
Add oil slowly if needed, using a funnel to avoid spills. Change the engine oil and oil filter every 100 hours of operation or at least once a year.
Always run the engine to fill the new filter and re-check the oil level after service.
Hydraulic/Transmission Oil Capacity
The hydraulic and transmission system on the AGCO ST30x uses a combined reservoir. Capacity is about 4.2 gallons (16 liters).
The best fluid is typically AGCO-branded Permatran or an equivalent high-quality universal tractor transmission/hydraulic fluid. Check the fluid level on the dipstick with the tractor on flat ground and the implement lowered.
Low fluid can cause hydraulic noise, poor performance, or even system damage. Replace the hydraulic/transmission oil and filter every 300-400 hours of operation, or as recommended in the official manual.
Use only the specified fluid type to prevent clogs or damage to internal systems.
| Fluid Type | Capacity | Key Notes | Maintenance Tips |
|---|---|---|---|
| Diesel Fuel | 7.9 gal (30 L) | Indirect injection, clean diesel only | Refill at 25%; keep cap clean |
| DEF Fluid | Not required | No DEF system on this model | Not applicable |
| Engine Oil | 4.2 qt (4.0 L) | Use SAE 15W-40, check before use | Change every 100 hrs or yearly |
| Hydraulic/Trans Oil | 4.2 gal (16 L) | Use Permatran-equivalent fluid, combined system | Change every 300-400 hrs; check often |
Electrical System
The AGCO ST30x uses a 12-volt electrical system that is dependable and straightforward. The battery, alternator, and starter all play vital roles in keeping the tractor running smoothly by ensuring consistent power delivery and reliable engine starts.
| Subsystem | Details |
|---|---|
| Ground Type | Negative Ground |
| Alternator / Charging | Alternator-Based System |
| Charging Output (Amps) | 40 Amps |
| Battery Voltage | 12 Volts |
| Battery CCA Rating | 582 CCA |
| Starter | Included, electric |
Ground Type (Negative / Positive)
The AGCO ST30x tractor uses a negative ground system. This means the negative terminal of the battery is connected directly to the chassis.
Negative ground systems are common because they help minimize corrosion at electrical connections. They also make it simpler to connect most accessories and replacement parts, as nearly all modern tractors and vehicles follow this standard.
If you ever replace the battery or perform maintenance on the electrical system, always ensure you correctly identify and connect the negative cable to the tractor’s frame and the positive cable to the starter and fuse box.
Alternator / Charging System
This tractor is equipped with an alternator-based charging system. The alternator is driven by the engine using a belt and is responsible for recharging the battery and supplying electrical power when the engine is running.
The alternator is essential for keeping the battery charged during operation, powering lights, instruments, and any 12V accessories you use. If you notice the battery light on your dashboard, it could mean the alternator is not working, and you should have it checked immediately.
Regular inspection of the alternator belt for wear and proper tension is important. The starter receives electrical current from the battery.
When you turn the key, the starter draws significant power. The alternator’s function in keeping the battery charged is crucial for reliable starts.
Charging Output (Amps)
The alternator in the AGCO ST30x provides a charging output of 40 amps. This amount of current is suitable for supporting all factory electrical equipment, including headlights, gauges, heaters, and warning lights.
A 40-amp rating gives you enough margin for additional equipment like work lights or small electronic accessories. If you plan to add higher-draw components, verify their requirements so you do not surpass the alternator’s capacity.
Exceeding this can lead to undercharged batteries and possible electrical failures.
Battery Voltage
The tractor uses a 12-volt battery as its standard. Most agricultural equipment in this power class uses 12V systems, which align with available replacement batteries and accessories.
This voltage is sufficient to operate the starter motor, control systems, and lighting without requiring a second battery or voltage conversion. Always make sure replacement batteries also provide 12 volts to avoid damage or starting failures.
Before installing a new battery, check for proper voltage with a voltmeter. Undercharged or aged batteries below 12 volts may have difficulty starting the engine or powering electrical accessories.
Battery CCA Rating
The AGCO ST30x battery is rated at 582 cold cranking amps (CCA). CCA is a measurement of how much current the battery can deliver at 0 °F (-18 °C) for 30 seconds while maintaining at least 7.2 volts.
A rating of 582 CCA means the battery has enough capacity to start the diesel engine in cold weather. Diesel engines need higher cranking power, especially in winter, to turn over the motor and activate glow plugs.
When you replace the battery, always match or exceed the 582 CCA rating to maintain reliable starting performance in all climates. If you experience slow cranking or engine starting issues, test your battery’s CCA rating with a dedicated tester.
Low CCA can indicate the battery is failing and needs replacement to ensure dependable tractor operation.
Total Cost Of Ownership Metrics
Effective cost management for the AGCO ST30x 28 hp tractor relies on routine maintenance and understanding how costs develop over time. Knowing the machine’s fuel needs at typical workloads also helps you plan your budget.
Recommended Service Intervals
Routine service is needed to keep the ST30x running well and to avoid expensive repairs. You should check the engine oil every 50 hours and change it every 100 hours.
Replace the oil filter with the oil. The air filter should be checked every 100 hours and replaced every 200 hours, depending on dust and field conditions.
Coolant should be monitored at each use and replaced every 2 years or 1,000 hours, whichever comes first. The hydraulic fluid and filters require changing every 400 hours.
Greasing all fittings weekly prevents unnecessary wear.
Estimated Annual Maintenance Cost
Annual maintenance costs for the AGCO ST30x mainly include fluids, filters, belts, and labor if servicing is not done by you. On average, you can expect to spend between $350 and $600 each year, depending on use intensity and local service rates.
Costs are lower if most work is performed as owner maintenance. Parts like filters and fluids are relatively affordable.
Labor for more complex tasks like hydraulic or transmission work will raise costs. Regular preventative work—oil and filter changes, air filter, greasing—makes up roughly half of the annual total.
Delaying basic service can lead to engine or hydraulic system problems and much higher repair bills.
Depreciation Curve (% Per Year)
The ST30x depreciates at a steady but manageable rate, which is important for long-term ownership planning. In the first year, you can expect a depreciation of around 15%, reflecting early value loss once the machine is no longer new.
Years two through five typically see depreciation rates of 8-10% per year as the tractor ages. After five years, the depreciation slows to about 5% per year as long as maintenance is kept up and there is no major damage.
Well-maintained tractors hold their value longer and can be resold at a better price.
| Year | Depreciation Rate (%) | Approximate Value Remaining (%) |
|---|---|---|
| 1 | 15 | 85 |
| 2 | 10 | 77 |
| 3 | 10 | 69 |
| 4 | 8 | 63 |
| 5 | 8 | 58 |
| 6+ | 5 | 55 (and declining) |
Fuel Consumption @ Rated Load (L hr⁻¹)
The AGCO ST30x’s engine is fuel-efficient for its class, thanks to its compact 28 hp diesel engine.
Under a typical rated workload, you should expect a fuel use rate of approximately 3.2 to 3.8 liters per hour (L/hr).
Lighter tasks like mowing or light hauling use closer to the lower end of the range.
Heavier fieldwork will push fuel use higher.
Actual usage varies with implement type, soil conditions, and engine load.
Consistent engine maintenance and clean air filters help keep fuel use low.
If you run the tractor for six hours a day on moderate tasks, a full day will consume about 19–22 liters of diesel.
Local fuel prices and workload intensity will have the largest impact on your total annual fuel bill.
| Metric | Value/Range | Notes |
|---|---|---|
| Oil Change Interval | 100 hours | Includes oil filter |
| Air Filter Interval | 100 hr (check), 200 hr (replace) | More often in dusty conditions |
| Annual Maintenance Cost | $350 – $600 | Depends on self-service vs. dealer |
| Depreciation Rate | 8-15%/yr (years 1-5) | Slows to 5% after 5 years |
| Fuel Consumption | 3.2–3.8 L/hr @ rated load | Varies with use and maintenance |