Yanmar YM135
Power
13 hp
Production
1976-1979
Engine
Diesel, 2-cylinder
Transmission
Gear
Weight
991 lbs [449 kg]
Drive
2WD/4WD
Introduction
Yanmar YM135 Sub-Compact Utility Tractor
The Yanmar YM135 is a sub-compact utility tractor manufactured between 1976 and 1979. Designed for small-scale agricultural tasks and landscaping, this machine represents the compact tractor segment of the late 1970s, prioritizing maneuverability and mechanical simplicity.
Engine and Performance
The tractor is powered by a Yanmar 2T73A liquid-cooled, two-cylinder diesel engine. With a displacement of 38.3 cubic inches (0.6 liters), it produces 13 horsepower (9.7 kW) at a rated speed of 2700 RPM. The engine delivers 25.3 lb-ft (34.3 Nm) of torque at 2400 RPM, providing sufficient power for light-duty utility applications.
Transmission and Drivetrain
The YM135 utilizes a manual gear transmission featuring six forward gears and two reverse gears. It was available in both two-wheel drive and four-wheel drive configurations. Control is maintained via manual steering and mechanical drum brakes, with a mechanical rear differential lock to assist in traction-limited conditions.
Hydraulics and Power Take-Off
The hydraulic system is of the open-center type, providing a pump flow of 3.8 gpm (14.4 lpm). The tractor is equipped with an independent rear power take-off (PTO) operating at 540 RPM at an engine speed of 2540 RPM, complemented by an independent front PTO capability. The rear Category I hitch offers a lift capacity of 1210 lbs (548 kg).
Dimensions and Weight
The YM135 features a compact footprint, with a wheelbase of 45.7 inches (116 cm) for the 2WD model and 48.9 inches (124 cm) for the 4WD version. The base weight ranges from 991 lbs (449 kg) to 1090 lbs (494 kg) depending on the drivetrain configuration. Ground clearance is 9.6 inches (24 cm), suitable for work on varied terrain.
Conclusion
The Yanmar YM135 is a specialized sub-compact tractor suited for small-property maintenance, light agricultural work, and hobby farming. Its simple mechanical design and modest dimensions make it a practical choice for operators requiring versatility in confined areas.
Production Information of Yanmar, YM135
- Sub-Compact Utility tractor
- Original price was $4,400 in 1979
| Manufacturer | Yanmar |
|---|
Dimension and Tires Information of Yanmar, YM135
| Rear tread | 23.6 to 31.6 inches [59 to 80 cm] |
|---|---|
| 2WD Wheelbase | 45.7 inches [116 cm] |
| Width | 35.4 inches [89 cm] |
| 4WD Length | 93.1 inches [236 cm] |
| 4WD Wheelbase | 48.9 inches [124 cm] |
| Ground clearance | 9.6 inches [24 cm] |
| 2WD Weight | 991 lbs [449 kg] |
| 2WD Length | 91.7 inches [232 cm] |
| 4WD Front tread | 29.3 inches [74 cm] |
| 2WD Front tread | 26.4 inches [67 cm] |
| 4WD Weight | 1090 lbs [494 kg] |
| 2WD Standard tires (ag) | Front: 4.50-10. Rear: 7-16 |
|---|---|
| Lawn/turf rear | 27x8.50-15 |
| 4WD Standard tires (ag) | Front: 5-12. Rear: 7-16 |
| Lawn/turf front | 20x8.00-10 |
Engine Specifications of Yanmar, YM135
- Yanmar 2T73A
- Liquid-cooled
- Diesel
- 2-cylinder
| Torque RPM | 2400 |
|---|---|
| Displacement | 38.3 ci [0.6 L] |
| Compression | 23:1 |
| Bore/Stroke | 2.874x2.953 inches [73 x 75 mm] |
| Starter volts | 12 |
| Torque | 25.3 lb-ft [34.3 Nm] |
| Rated RPM | 2700 |
| Power | 13 hp [9.7 kW] |
Transmission Information of Yanmar, YM135
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 6 forward and 2 reverse |
Mechanical Specs of Yanmar, YM135
- Two- or four-wheel drive
- Open operator station.
- Mechanical drum brakes
- Manual steering
| Differential lock | Mechanical rear |
|---|
Power Information of Yanmar, YM135
| Rear PTO Type | 540 (1.375) |
|---|---|
| Clutch | Electric |
| Front PTO | Independent |
| Engine RPM | 540@2540 |
| Engine RPM(optional) | 770@2540 |
Hydraulics Specifications of Yanmar, YM135
| Type | Open center |
|---|---|
| Pump flow | 3.8 gpm [14.4 lpm] |
Three-Point Hitch of Yanmar, YM135
| Rear Type | I |
|---|---|
| Rear lift | 1210 lbs [548 kg] |
Electrical System of Yanmar, YM135
| Ground | Negative |
|---|---|
| Battery volts | 12 |
Where it sits
With 13 HP, the Yanmar YM135 sits between YM173 (12 HP) and AF-15 (14 HP) in Yanmar's range. Its power puts it in the 2th percentile of 1970s models in our database (1259 machines).
Frequently asked questions
How much horsepower does the Yanmar YM135 have?
The Yanmar YM135 delivers 13 HP.
What years was the Yanmar YM135 produced?
The Yanmar YM135 was produced in 1976-1979.
What engine does the Yanmar YM135 have?
The Yanmar YM135 is powered by a Diesel, 2-cylinder engine.
What transmission does the Yanmar YM135 use?
The Yanmar YM135 uses a Gear transmission.
How much does the Yanmar YM135 weigh?
The Yanmar YM135 weighs 991 lbs [449 kg].
Is the Yanmar YM135 4WD?
The Yanmar YM135 is available in 2WD/4WD.