The Yanmar YM186 is a 2WD or 4WD compact utility tractor manufactured by Yanmar from 1980 to 1986. The Yanmar YM186 is equipped with a 0.9 L (53.5 cu·in) three-cylinder diesel engine and a transmission with 9 forward and 3 reverse gears.
The Yanmar YM186 compact utility tractor used the Yanmar 3T72HA engine. It is a 0.9 L, 877 cm2, (53.5 cu·in) three-cylinder natural aspirated diesel engine with 72.0 mm (2.83 in) of the cylinder bore and 72.0 mm (2.83 in) of the piston stroke. The compression ratio rating is 23.0:1. This engine produced 18.2 PS (13.4 kW; 18.0 HP) at 2,600 rpm of output power.
The Yanmar YM186 is equipped with manual or power (optional) steering, mechanical dry shoe brakes, Open operator station or ROPS (optional) and 15.9 liters (4.2 US gal.; 3.5 Imp. gal) fuel tank.
This tractor was available in two variants:
- YM186: 2WD
- YM186D: 4WD
Yanmar YM186 Specifications
| General Specifications | |
| Model | Yanmar YM186 |
| Length | 2,490 mm (98 in) |
| Width | 1,080 mm (42.5 in) |
| Height (steering wheel) | 1,340 mm (52.8 in) |
| Wheel base | – |
| Ground clearance | 260 mm (10.2 in) |
| Weight | 2WD: 650 kg (1,433 lbs) 4WD: 700 kg (1,543 lbs) |
| Fuel tank capacity | 15.9 liters (4.2 US gal.; 3.5 Imp. gal) |
| Battery | 12V, 45Ah |
| Cabin type | Open operator station or ROPS (optional) |
| Engine | |
| Engine model | Yanmar 3T72HA |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 3 |
| Fuel type | Diesel |
| Displacement | 0.9 L, 877 cm2, (53.5 cu·in) |
| Bore and stroke | 72.0 mm X 72.0 mm (2.83 in X 2.83 in) |
| Compression ratio | 23.0:1 |
| Horsepower | 18.2 PS (13.4 kW; 18.0 HP) at 2,600 rpm |
| Starter | Electric |
| Oil capacity: | 3.2 L (3.4 US. qt, 2.8 Imp. qt.) |
| Coolant capacity: | 4.2 L (4.4 US. qt, 3.7 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD (YM186) or 4×4 MFWD 4WD (YM186D) |
| Steering type | Manual or power (optional) |
| Brakes | Mechanical dry shoe |
| Transmission model | – |
| Transmission type | – |
| Gears | 9 forward and 3 reverse |
| Speed | Forward: 13.2 kmh (8.2 mph) Reverse: 8.9 kmh (5.5 mph) |
| Transmission oil capacity | 7.9 L (2.1 US. gal, 1.7 Imp. gal.) |
| Tires | |
| Front tires | Ag: 5.00-12 (2WD), 6-12 (4WD) |
| Rear tires | Ag: 9.5-16 |
| Three-Point Hitch | |
| Category | I |
| Control type | – |
| Lift capacity (at 610 mm/24 in) | 250 kg (551 lbs) |
| PTO (Power take-off shaft) | |
| Rear PTO type | Transmission |
| Rear PTO speed | 540/1000 rpm |
| Hydraulic system | |
| Hydraulic type | Open center |
| Hydraulic capacity | 7.9 L (2.1 US. gal, 1.7 Imp. gal.) |
| Pressure | 1991 psi (137.3 bar) |
| Total flow | 4.8 gpm (18.2 lpm) |
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