Brand siblingYanmar YM186
The Yanmar YM186 is a small utility tractor made from 1980 to 1986. It has a 2WD chassis and a manual steering system. The tractor uses a 9-speed forward and 3-speed reverse manual transmission, giving farmers good control over their work. Under the hood, the YM186 has a Yanmar 3T72HA diesel engine. This engine has 3 cylinders and is liquid-cooled. It produces 18 horsepower, which is below average for tractors. The engine size is also quite small compared to other tractors. The YM186 has a Category I hitch that can lift up to 551 pounds, which is below average. It also has two PTO speeds: 540 rpm and 1000 rpm. The tractor weighs 1433 pounds, making it very light and easy to move around. It comes with an open operator station, but a ROPS (Roll-Over Protective Structure) is optional for added safety.

Quick specs
- Category
- Utility
- Engine Power Output
- 18hp
- Operating Weight
- 1,433 lb
- Transmission
- Manual
At a glance
How the YM186 compares
vs. Utility medianDistribution
Engine Power (hp)
Across all Utility tractors
This model
The YM186 ranks at the 6th percentile for engine power among recorded utility tractors.
Overview
About the Yanmar YM186
The Yanmar YM186 is a small utility tractor made from 1980 to 1986. It has a 2WD chassis and a manual steering system. The tractor uses a 9-speed forward and 3-speed reverse manual transmission, giving farmers good control over their work. Under the hood, the YM186 has a Yanmar 3T72HA diesel engine. This engine has 3 cylinders and is liquid-cooled. It produces 18 horsepower, which is below average for tractors. The engine size is also quite small compared to other tractors. The YM186 has a Category I hitch that can lift up to 551 pounds, which is below average. It also has two PTO speeds: 540 rpm and 1000 rpm. The tractor weighs 1433 pounds, making it very light and easy to move around. It comes with an open operator station, but a ROPS (Roll-Over Protective Structure) is optional for added safety.
Full specifications
Every recorded spec
General
| Manufacturer | Yanmar |
|---|---|
| Model | YM186 |
| Category | Utility tractor |
| Type | 4x2 2WD |
| Years built | 1980–1986 |
| Operating weight | 1,433lb |
Engine
| Make | Yanmar |
|---|---|
| Model | 3T72HA |
| Power | 18hp |
| Cylinders | 3 |
| Displacement | 53.5ci |
| Bore | 2.83in |
| Stroke | 2.83in |
Transmission
| Type | Manual |
|---|---|
| Forward gears | 9 |
| Reverse gears | 3 |
Chassis & drive
| Chassis | 4x2 2WD |
|---|---|
| Drive | 2WD |
| Steering | Manual |
| Brakes | Mechanical dry shoe |
| Cab | Open operator station or ROPS (optional) |
Hydraulics
| Type | Open Center |
|---|
Power take-off
| Rear PTO | Transmission |
|---|---|
| PTO speed | 540rpm |
Dimensions
| Length | 98in |
|---|---|
| Width | 42.5in |
| Height | 52.8in |
| Operating weight | 1,433lb |
Tires
| Front | 5.00-12 |
|---|---|
| Rear | 9.5-16 |
Capacities
| Cooling system | 1.1gal |
|---|
Head to head
YM186 vs. Utility median
How the Yanmar YM186 compares to other Utility tractors
| Spec | This model | Utility median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 18 hp | 55 hp | -67% | 6th |
| Engine Displacement | 53.5 ci | 183 ci | -71% | 3rd |
| Cylinders | 3 | 4 | -25% | 23rd |
| Forward Gears | 9 | 12 | -25% | 35th |
| Operating Weight | 1,433 lb | 5,303 lb | -73% | 5th |
| Length | 98 in | 137 in | -28% | 7th |
| Width | 42.5 in | 66 in | -36% | 6th |
| Height | 52.8 in | 94.1 in | -44% | 4th |
| 3-Point Hitch Capacity | 551 lb | 3,197 lb | -83% | 1st |
Medians and percentiles are computed from the utility tractors in our database with a recorded value for each spec (sample sizes 1,083–5,720 models).
Compare to tractors with similar specs
Commonly compared Yanmar tractors
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Yanmar YM1802 | 18 hp | 2,260 lb | 1982–1983 | Compare → |
| Yanmar YM1810 | 18 hp | 1,808 lb | 1980–1981 | Compare → |
| Yanmar YM187 | 18 hp | 1,523 lb | — | Compare → |
| Yanmar AF-18 | 17.8 hp | 1,653 lb | 1992+ | Compare → |
| Yanmar AF-180 | 17.8 hp | 1,653 lb | 1997–2000 | Compare → |
Commonly compared tractors with similar horsepower from other brands
| Tractor | Engine Power | Operating Weight | Years | Compare |
|---|---|---|---|---|
| Allis Chalmers 5015 | 18 hp | 1,278 lb | 1982–1985 | Compare → |
| Allis Chalmers WC (1938-1948) | 18 hp | 3,792 lb | 1938–1948 | Compare → |
| Bolens 1886 | 18 hp | — | 1971–1972 | Compare → |
| CaseIH 235 | 18 hp | 1,350 lb | — | Compare → |
| CaseIH Farmall DX18E | 18 hp | 1,314 lb | — | Compare → |
Explore
Yanmar siblings
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Gallery
Yanmar YM186 photos





FAQ
Common questions
What years was the Yanmar YM186 manufactured?
Production of the Yanmar YM186 ran from 1980 through 1986.
What type of transmission does the Yanmar YM186 have?
The Yanmar YM186 uses a Manual transmission offering 9 forward gears.
What hydraulics does the Yanmar YM186 have?
The Yanmar YM186 uses an Open Center hydraulic system.
What are the factory tire sizes for the Yanmar YM186?
The Yanmar YM186 comes with 5.00-12 front tires and 9.5-16 rear tires.
How powerful is the Yanmar YM186?
The Yanmar YM186 has an engine power output of 18 hp. It is powered by a 3-cylinder engine displacing 53.5 ci.
What is the working weight of the Yanmar YM186?
The operating weight of the Yanmar YM186 is approximately 1,433 lb.
What routine service does the Yanmar YM186 need?
Regular maintenance for the Yanmar YM186 includes checking and changing engine oil, hydraulic fluid, and filters, plus routine inspections as recommended in the owner's manual. Always follow the manufacturer's maintenance schedule for specific intervals and procedures.

