Yanmar YM186
Power
18 hp
Production
1980-1986
Engine
Diesel, 3-cylinder
Transmission
Three-speed power shift
Weight
1433 lbs [650 kg]
Drive
2WD/4WD
From the same series:
Introduction
Yanmar YM186 Compact Utility Tractor
The Yanmar YM186 is a compact utility tractor produced between 1980 and 1986. Designed for versatility in agricultural and property maintenance applications, this model features an 18 horsepower diesel engine and is available in both two-wheel and four-wheel drive configurations.
Engine and Performance
The tractor is powered by the Yanmar 3T72HA, a 0.9-liter, 3-cylinder liquid-cooled diesel engine. It delivers a gross power output of 18 hp (13.4 kW) at a rated speed of 2600 RPM. The engine utilizes a 23:1 compression ratio and includes a Thermostart pre-heating system to facilitate cold weather starting.
Transmission and Drivetrain
The YM186 utilizes a three-speed power shift transmission across three ranges, providing a total of 9 forward and 3 reverse gears. The drivetrain includes a mechanical rear differential lock to enhance traction in difficult soil conditions, and it is supported by an overrunning dry disc clutch system.
Hydraulics and PTO
The hydraulic system is an open-center design providing a total flow of 4.8 gpm (18.2 lpm) at a pressure of 1991 psi (137.3 bar). The rear PTO is a live, independent system offering 540 and 1000 RPM speeds. Additionally, the tractor features an independent front PTO driven by a pulley system with an electro-magnetic clutch.
Hitch and Dimensions
Equipped with a Category I rear hitch, the YM186 has a lift capacity of 661 lbs (299 kg) at the link ends. With a total length of 98.3 inches (249 cm) and a width of 42.9 inches (108 cm), the tractor offers a compact footprint suitable for narrow passages. The ground clearance is 10.4 inches (26 cm), and the shipping weight ranges from 1433 lbs to 1539 lbs depending on the 2WD or 4WD configuration.
Conclusion
The Yanmar YM186 serves as a reliable compact utility solution, balancing a 18 hp power output with a maneuverable chassis. Its combination of a power shift transmission, independent PTO options, and Category I hitch makes it well-suited for small-scale farming, landscaping, and general utility tasks requiring precise implement control.
Production Information of Yanmar, YM186
- Compact Utility tractor
- Original price was $7,400 in 1986
| Manufacturer | Yanmar |
|---|
Dimension and Tires Information of Yanmar, YM186
| Ground clearance | 10.4 inches [26 cm] |
|---|---|
| Length | 98.3 inches [249 cm] |
| 2WD Shipping weight | 1433 lbs [650 kg] |
| Height (exhaust) | 50.0 inches [127 cm] |
| Width | 42.9 inches [108 cm] |
| 4WD Shipping weight | 1539 lbs [698 kg] |
| Height (steering wheel) | 53.1 inches [134 cm] |
| 2WD Ag front | 5.00-12 |
|---|---|
| 4WD Ag front | 6-12 |
| Ag rear | 9.5-16 |
Engine Specifications of Yanmar, YM186
- Yanmar 3T72HA
- Liquid-cooled
- 3-cylinder
- Diesel
| Exhaust valve clearance | 0.008 inches [0.203 mm] |
|---|---|
| Intake valve clearance | 0.008 inches [0.203 mm] |
| Pre-heating | Thermostart |
| Firing order | 1-3-2 |
| Rated RPM | 2600 |
| Displacement | 53.5 ci [0.9 L] |
| Power (gross) | 18 hp [13.4 kW] |
| Compression | 23:1 |
| Bore/Stroke | 2.83x2.83 inches [72 x 72 mm] |
| Coolant capacity | 4.4 qts [4.2 L] |
| Oil capacity | 3.4 qts [3.2 L] |
| Starter volts | 12 |
Transmission Information of Yanmar, YM186
Transmission variants 1
- Three speeds, plus reverse, with three ranges.
| Type | Three-speed power shift |
|---|---|
| Gears | 9 forward and 3 reverse |
| Oil capacity | 8.4 qts [7.9 L] |
Mechanical Specs of Yanmar, YM186
- Two- or four-wheel drive
- Mechanical dry shoe brakes
- Open operator station. ROPS optional.
| Differential lock | Mechanical rear |
|---|---|
| Steering | Manual |
Power Information of Yanmar, YM186
| Clutch | Electro-magnetic |
|---|---|
| Rear PTO | Live |
| Rear PTO(optional) | 1000@2412 |
| Engine RPM | 540@2430 |
| Clutch | Overrunning dry disc |
| Front PTO Type | Pulley |
| Front PTO | Independent |
| Rear PTO Type | 540/1000 (1.375) |
Hydraulics Specifications of Yanmar, YM186
| Type | Open center |
|---|---|
| Total flow | 4.8 gpm [18.2 lpm] |
| Capacity | 2.1 gal [7.9 L] |
| Pressure | 1991 psi [137.3 bar] |
Three-Point Hitch of Yanmar, YM186
| Rear Type | I |
|---|---|
| Rear lift (at ends) | 661 lbs [299 kg] |
| Rear lift (at 24"/610mm) | 529 lbs [239 kg] |
Electrical System of Yanmar, YM186
| Ground | Negative |
|---|---|
| Battery AH | 45 |
| Battery volts | 12 |
| Charging system | Alternator |
| Charging amps | 15 |
Where it sits
Its power puts it in the 9th percentile of 1980s models in our database (2052 machines).
Frequently asked questions
How much horsepower does the Yanmar YM186 have?
The Yanmar YM186 delivers 18 HP.
What years was the Yanmar YM186 produced?
The Yanmar YM186 was produced in 1980-1986.
What engine does the Yanmar YM186 have?
The Yanmar YM186 is powered by a Diesel, 3-cylinder engine.
What transmission does the Yanmar YM186 use?
The Yanmar YM186 uses a Three-speed power shift transmission.
How much does the Yanmar YM186 weigh?
The Yanmar YM186 weighs 1433 lbs [650 kg].
Is the Yanmar YM186 4WD?
The Yanmar YM186 is available in 2WD/4WD.