Yanmar YM155: all source data
All 57 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | Yanmar |
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| (no label) | Sub-Compact Utility tractor |
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| (no label) | Original price was $5,000 in 1979 |
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Engine| (no label) | Yanmar 0.7L 2-cyl diesel |
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| Fuel tank | 4 gal | 15.1 L |
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Transmission| (no label) | 6-speed gear |
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Power| Engine | 15 hp | 11.2 kW |
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Mechanical| (no label) | Two- or four-wheel drive |
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| Differential lock | mechanical rear |
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| (no label) | Manual steering |
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| (no label) | Mechanical drum brakes |
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| (no label) | Open operator station. |
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Hydraulics| Type | open center |
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| Pump flow | 3.8 gpm | 14.4 lpm |
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Hitch| Rear Type | I |
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| Rear lift | 1210 lbs | 548 kg |
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Pto| Clutch | overrunning |
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| Rear PTO Type | 540 (1.375) |
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| Engine RPM | 540@2540 |
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| Engine RPM | 770@2540 |
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Dimensions| Wheelbase | 48.8 inches | 123 cm |
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| Weight | 1057 to 1145 pounds |
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| Front tire | 4.50-10 |
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| 2WD Rear tire (2WD) | 8-16 |
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Electrical| Ground | negative |
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| Battery volts | 12 |
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Engine
Engine detail| (no label) | Yanmar 2TR13A |
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| (no label) | diesel |
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| (no label) | 2-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 40.4 ci | 0.7 L |
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| Bore/Stroke | 2.953x2.953 inches | 75 x 75 mm |
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| Power | 15 hp | 11.2 kW |
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| Compression | 23:1 |
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| Rated RPM | 2700 |
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| Torque | 28.9 lb-ft | 39.2 Nm |
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| Torque RPM | 2200 |
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| Firing order | 1-2 |
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| Starter volts | 12 |
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| Oil capacity | 2.1 qts | 2.0 L |
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Transmission
Transmission| Type | gear |
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| Gears | 6 forward and 2 reverse |
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| Clutch | 180mm dry disc |
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Dimensions
Tires| 2WD Standard tires (ag) (2WD) | Front: 4.50-10. Rear: 8-16 |
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| 4WD Standard tires (ag) (4WD) | Front: 5-12. Rear: 8-16 |
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| Ag rear | 8-16 |
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Dimensions| Wheelbase | 48.8 inches | 123 cm |
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| Length | 99.2 inches | 251 cm |
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| Width | 37.6 inches | 95 cm |
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| Height (steering wheel) | 45.7 inches | 116 cm |
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| Height (hood) | 42.2 inches | 107 cm |
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| 2WD Weight (2WD) | 1057 lbs | 479 kg |
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| 4WD Weight (4WD) | 1145 lbs | 519 kg |
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| Ground clearance | 10.4 inches | 26 cm |
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| 2WD Front tread | 28.7 inches | 72 cm |
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| 4WD Front tread | 29.3 inches | 74 cm |
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| Rear tread | 27.6 to 33.5 inches | 70 to 85 cm |
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