| Manufacturer | Satoh |
| Price | - |
| Model | S650 |
| Equipment Type | Compact Utility Tractors |
| Factory | Japan |
NEBRASKA TRACTOR TEST 1106 2
| Description | Gasoline 6-speed 2WD/September 4 - 12, 1972/Link: Nebraska Tractor Test 1106 file/PTO performance/Drawbar performance |
| Power at rated engine speed | 22.03 hp/16.4 kW |
| Fuel use | 2.1 gal/hour/7.9 l/hour |
| Power at rated PTO speed | 21.48 hp/16.0 kW |
| Max power | 18.16 hp/13.5 kW |
| Max pull | 2,794 lbs/1267 kg |
SATOH S650 POWER
| Engine | 25 hp/18.6 kW |
| PTO (claimed) | 22 hp/16.4 kW |
| Drawbar (tested) | 18.16 hp/13.5 kW |
| PTO (tested) | 22.03 hp/16.4 kW |
ENGINE DETAIL
The Satoh S650 tractor is powered by a liquid-cooled Mazda 4-cylinder gasoline engine with a modest displacement of 1.0 L, generating 25 hp at a rated RPM of 2800, which makes it suitable for light agricultural tasks. It features an oil bath air cleaner and a low compression ratio of 8.6:1, which can enhance fuel efficiency but may limit power output in high-load scenarios. With an oil capacity of 3.2 quarts and a coolant capacity of 5 quarts, maintenance intervals are manageable, although users should be mindful of the relatively limited horsepower for heavy-duty applications.
| Description | Mazda/gasoline/4-cylinder/liquid-cooled |
| Displacement | 60.2 ci/1.0 L |
| Bore/Stroke | 2.677x2.677 inches/68 x 68 mm |
| Power | 25 hp/18.6 kW |
| Air cleaner | oil bath |
| Compression | 8.6:1 |
| Rated RPM | 2800 |
| Starter | electric |
| Starter volts | 12 |
| Oil capacity | 3.2 qts/3.0 L |
| Coolant capacity | 5 qts/4.7 L |
SATOH S650 ENGINE
The Satoh S650 tractor is powered by a Mazda 1.0L 4-cylinder gasoline engine, which provides a good balance of power and fuel efficiency for light agricultural tasks. With a fuel tank capacity of 9.5 gallons (36.0 liters), this tractor offers sufficient operational range for small to medium-sized properties, though refueling may be required frequently during larger projects. Ideal for tasks such as gardening or small-scale farming, this tractor's compact size and engine design may pose challenges in heavy-duty applications due to limited horsepower and torque output.
| Description | Mazda 1.0L 4-cyl gasoline |
| Fuel tank | 9.5 gal/36.0 L |
TRANSMISSION
The Satoh S650 tractor features an unsynchronized gear transmission with 6 forward and 2 reverse gears, allowing for versatile operation in varying terrain; however, the lack of synchronization might complicate shifting under load. The dry disc clutch provides reliable engagement but may require careful maintenance to prevent slippage. With an oil capacity of 18.9 quarts, proper lubrication is crucial for longevity and performance under heavy workloads.
| Type | unsynchronized gear |
| Gears | 6 forward and 2 reverse |
| Clutch | dry disc |
| Oil capacity | 18.9 qts/17.9 L |
| Description | Three gears (1-3) in two ranges (low-high). |
MECHANICAL
The Satoh S650 features a simple 4x2 2WD chassis that provides basic traction and maneuverability, making it suitable for light-duty agricultural tasks. Its manual steering and differential mechanical brakes may require more driver effort and attention, especially on uneven terrain. The 6-speed unsynchronized transmission can be an advantage for operators familiar with gear shifting, but it may pose a challenge for less experienced users needing smoother shifting between gears.
| Chassis | 4x2 2WD |
| Final drives | spur gear |
| Steering | manual |
| Brakes | differential mechanical internal expanding shoe |
| Cab | Open operator station. |
| Transmission | 6-speed unsynchronized gear |
TRACTOR HITCH
| Rear Type | I |
| Rear lift | 1102 lbs/499 kg |
POWER TAKE-OFF (PTO)
| Rear RPM | 540/1000 |
| Engine RPM | 540@2800 |
SATOH S650 TIRES
The Satoh S650 features a versatile tire configuration with agricultural front and rear tires (5.00-15 and 11.2/10-24, respectively), optimizing traction for fieldwork, while its lawn/turf options (20x8-10 and 13.6-16.5) enhance maneuverability and reduce ground pressure on sensitive surfaces. The dual tire setups provide flexibility, allowing operators to switch from agricultural applications to landscaping tasks as needed. However, maintaining proper tire pressure and ensuring the correct tire type for the intended application is essential to maximize performance and prevent uneven wear.
| Ag front | 5.00-15 |
| Ag rear | 11.2/10-24 |
| Lawn/turf front | 20x8-10 |
| Lawn/turf rear | 13.6-16.5 |
DIMENSIONS
| Wheelbase | 60.4 inches/153 cm |
| Length | 105.1 inches/266 cm |
| Width | 52.9 inches/134 cm |
| Height (steering wheel) | 54.7 inches/138 cm |
| Operating weight | 2105 lbs/954 kg |
| Ballasted weight | 3640 lbs/1651 kg |
| Ground clearance | 13.9 inches/35 cm |
| Front tread | 40.9 to 52.8 inches/103 to 134 cm |
| Rear tread | 40 to 51.7 inches/101 to 131 cm |
DIMENSIONS & TIRES
The Satoh S650 tractor features a compact wheelbase of 60.4 inches, enhancing maneuverability in tight spaces, making it ideal for small farms or landscaping. Weighing 2105 lbs, it offers a good ground stability, but may have limitations in heavy soil conditions where increased weight is beneficial. The tire specifications indicate moderate flotation with the front tires and larger rear tires for improved traction during plowing or towing, although tire pressure management is crucial for optimal performance and soil preservation.
| Wheelbase | 60.4 inches/153 cm |
| Weight | 2105 lbs/954 kg |
| Front tire | 5.00-15 |
| Rear tire | 11.2/10-24 |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Battery volts | 12 |