Satoh ST4040
The Satoh ST4040 is a compact yet powerful tractor designed for various farming tasks. It features a Mitsubishi 4DQ5 engine, which is a 4-cylinder, liquid-cooled diesel engine. This engine produces 39.5 hp at 2400 rpm, making it suitable for small to medium-sized farms. The tractor has a gear transmission with 9 forward gears and 3 reverse gears, giving the operator good control over speed and power. It measures 131.5 inches long and 60.6 inches wide, with an operating weight of 3748 lb. The ST4040 comes with a JIS1 hitch type and an electric starter for easy operation. It also has a 12V electrical system and rear tires sized 12.4/11-28. The coolant capacity is 8.5 quarts, which helps keep the engine running smoothly in various conditions.
Quick specs
- Category
- Sub-Compact
- Engine Power Output
- 40hp
- Operating Weight
- 3,748 lb
- Transmission
- Gear
At a glance
How the ST4040 compares
vs. Sub-Compact medianDistribution
Engine Power (hp)
Across all Sub-Compact tractors
This model
The ST4040 ranks at the 74th percentile for engine power among recorded sub-compact tractors.
Overview
About the Satoh ST4040
The Satoh ST4040 is a compact yet powerful tractor designed for various farming tasks. It features a Mitsubishi 4DQ5 engine, which is a 4-cylinder, liquid-cooled diesel engine. This engine produces 39.5 hp at 2400 rpm, making it suitable for small to medium-sized farms. The tractor has a gear transmission with 9 forward gears and 3 reverse gears, giving the operator good control over speed and power. It measures 131.5 inches long and 60.6 inches wide, with an operating weight of 3748 lb. The ST4040 comes with a JIS1 hitch type and an electric starter for easy operation. It also has a 12V electrical system and rear tires sized 12.4/11-28. The coolant capacity is 8.5 quarts, which helps keep the engine running smoothly in various conditions.
Full specifications
Every recorded spec
General
| Manufacturer | Satoh |
|---|---|
| Model | ST4040 |
| Category | Sub-Compact tractor |
| Operating weight | 3,748lb |
Engine
| Make | Mitsubishi |
|---|---|
| Model | 4DQ5 |
| Power | 39.5hp |
| Cylinders | 4 |
| Displacement | 127.2ci |
| Bore | 3.31in |
| Stroke | 3.7in |
Transmission
| Type | Gear |
|---|---|
| Forward gears | 9 |
| Reverse gears | 3 |
Dimensions
| Length | 131.5in |
|---|---|
| Width | 60.6in |
| Operating weight | 3,748lb |
Capacities
| Cooling system | 2.13gal |
|---|
Head to head
ST4040 vs. Sub-Compact median
How the Satoh ST4040 compares to other Sub-Compact tractors
| Spec | This model | Sub-Compact median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 39.5 hp | 26.9 hp | +47% | 74th |
| Engine Displacement | 127 ci | 91.4 ci | +39% | 72nd |
| Cylinders | 4 | 3 | +33% | 90th |
| Forward Gears | 9 | 9 | at median | 50th |
| Operating Weight | 3,748 lb | 2,700 lb | +39% | 72nd |
| Length | 132 in | 113 in | +16% | 82nd |
| Width | 60.6 in | 50.7 in | +20% | 76th |
Medians and percentiles are computed from the sub-compact tractors in our database with a recorded value for each spec (sample sizes 584–816 models).
Compare to tractors with similar specs
Commonly compared Satoh tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Satoh ST3220 | 32 hp | 2,601 lb | — | Compare → |
| Satoh ST3240 | 32 hp | 2,866 lb | — | Compare → |
| Satoh ST2500 | 25 hp | — | — | Compare → |
| Satoh ST2501 | 25 hp | — | — | Compare → |
| Satoh ST2300 | 23 hp | — | — | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Advance-Rumely OilPull K 12/20 | 40 hp | 6,430 lb | — | Compare → |
| Allis Chalmers 160 | 40 hp | 4,674 lb | 1970–1975 | Compare → |
| Allis Chalmers 5040 | 40 hp | 3,858 lb | 1976–1980 | Compare → |
| Allis Chalmers 6140 | 40 hp | 4,000 lb | 1982–1985 | Compare → |
| Allis Chalmers D15 Series I | 40 hp | 3,990 lb | 1960–1963 | Compare → |
Explore
Satoh siblings
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FAQ
Common questions
How much horsepower does the Satoh ST4040 have?
The Satoh ST4040 produces 39.5 hp from its 4-cylinder engine. Engine displacement is 127.2 ci.
What transmission is in the Satoh ST4040?
Transmission on the Satoh ST4040 is Gear, with 9 forward speeds.
How much does the Satoh ST4040 weigh?
The Satoh ST4040 weighs about 3,748 lb in operating condition.
What maintenance does the Satoh ST4040 require?
Like any tractor, the Satoh ST4040 needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.


