Yanmar YM186

Yanmar YM186The 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
ModelYanmar YM186
Length2,490 mm (98 in)
Width1,080 mm (42.5 in)
Height (steering wheel)1,340 mm (52.8 in)
Wheel base
Ground clearance260 mm (10.2 in)
Weight 2WD: 650 kg (1,433 lbs)
4WD: 700 kg (1,543 lbs)
Fuel tank capacity15.9 liters (4.2 US gal.; 3.5 Imp. gal)
Battery12V, 45Ah
Cabin typeOpen operator station or ROPS (optional)
Engine modelYanmar 3T72HA
Engine typeFour-stroke, liquid-cooled, inline
Fuel typeDiesel
Displacement0.9 L, 877 cm2, (53.5 cu·in)
Bore and stroke72.0 mm X 72.0 mm (2.83 in X 2.83 in)
Compression ratio23.0:1
Horsepower18.2 PS (13.4 kW; 18.0 HP) at 2,600 rpm
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
Chassis4×2 2WD (YM186) or 4×4 MFWD 4WD (YM186D)
Steering typeManual or power (optional)
BrakesMechanical dry shoe
Transmission model
Transmission type
Gears9 forward and 3 reverse
Speed Forward: 13.2 kmh (8.2 mph) Reverse: 8.9 kmh (5.5 mph)
Transmission oil capacity7.9 L (2.1 US. gal, 1.7 Imp. gal.)
Front tires Ag: 5.00-12 (2WD), 6-12 (4WD)
Rear tires Ag: 9.5-16
Three-Point Hitch
Control type
Lift capacity (at 610 mm/24 in)250 kg (551 lbs)
PTO (Power take-off shaft)
Rear PTO typeTransmission
Rear PTO speed540/1000 rpm
Hydraulic system
Hydraulic typeOpen center
Hydraulic capacity7.9 L (2.1 US. gal, 1.7 Imp. gal.)
Pressure1991 psi (137.3 bar)
Total flow4.8 gpm (18.2 lpm)
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