Yanmar YM187
The Yanmar YM187 is a tractor produced by Yanmar. It is equipped with a 53.6 ci 0.9 L engine. The listed engine power is Diesel (listed): 18 hp / 13.4 kW. Transmission: 9 forward and 3 reverse. Operating weight: 1523 to 1658 pounds.
Engine Power
Diesel (listed): 18 hp / 13.4 kW
Fuel & Capacities
5.3 gal
20.1 L
Transmission
9 forward and 3 reverse
Operating Weight
1523 to 1658 pounds
Overview
 | 1986 - 1989
Compact Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Yanmar |
Compact Utility tractor | |
Variants | |
|---|---|
YM187 | 2WD |
YM187D | 4WD |
Yanmar YM187 Engine | |
|---|---|
Yanmar 0.9L 3-cyl diesel | |
Fuel tank | 5.3 gal
20.1 L |
Engine details ...  | |
Yanmar YM187 Transmission | |
|---|---|
9-speed three-speed power shift | |
Transmission details ...  |
Yanmar YM187 Power | |
|---|---|
Engine | 18 hp
13.4 kW |
Mechanical | |
|---|---|
Two- or four-wheel drive | |
Steering | manual |
power optional | |
Mechanical drum brakes | |
Two-post fixed ROPS. | |
Tractor hitch | |
|---|---|
Rear Type | I |
Control | position control |
Rear lift (at ends) | 1036 lbs
469 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540/1000 (1.375) |
Dimensions & Tires | |
|---|---|
Wheelbase | 57.6 inches
146 cm |
Weight | 1523 to 1658 pounds |
Front tire | 6.50-10 |
2WD Rear tire | 12.4-16 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
 | |
18 and 22 hp Compact Utility Tractors published in 1988, by Yanmar* | |
*Publication contains known errors. |
Engine
Engine Detail — 53.6 ci / 0.9 L Diesel
Manufacturer | Yanmar 3T72HA-N |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled |
Displacement | 53.6 ci
0.9 L |
Bore/Stroke | 2.83x2.91 inches
72 x 74 mm |
Power | 18 hp
13.4 kW |
Compression | 23:1 |
Rated RPM | 2600 |
Firing order | 1-3-2 |
Starter | electric |
Starter volts | 12 |
Oil capacity | 3.4 qts
3.2 L |
Coolant capacity | 4.4 qts
4.2 L |
Transmission
Transmission — 9 forward and 3 reverse three-speed power shift
Type | three-speed power shift |
Gears | 9 forward and 3 reverse |
Clutch | dry disc |
Three gears (1-3) plus reverse (R) in three ranges. Dashboard-mounted gear shifter. | |
 | |
Dimensions
Yanmar YM187 Tires | |
|---|---|
2WD Standard tires (ag) | Front: 6.50-10. Rear: 12.4-16 |
4WD Standard tires (ag) | Front: 6-12. Rear: 12.4-16 |
Lawn/turf front | 20x8.00-10 |
Lawn/turf rear | 31x15.5-15 |
Dimensions | |
|---|---|
Wheelbase | 57.6 inches
146 cm |
Length | 106.5 inches
270 cm |
Width | 50 inches
127 cm |
2WD Weight | 1523 lbs
690 kg |
4WD Weight | 1658 lbs
752 kg |
2WD Clearance (drawbar) | 12.6 inches
32 cm |
4WD Clearance (drawbar) | 10.8 inches
27 cm |
2WD Front tread | 32.7 inches
83 cm |
4WD Front tread | 34.3 inches
87 cm |
Rear tread | 37.6 to 41.5 inches
95 to 105 cm |
Yanmar YM187 Height | |
|---|---|
2WD Steering wheel | 52.4 inches
133 cm |
4WD Steering wheel | 52.8 inches
134 cm |
ROPS | 84.9 inches
215 cm |
Attachments
Attachment overview | |
|---|---|
60" mid-mount mower deck | |
Front-end loader | |
Backhoe |
60" Mower deck | |
|---|---|
Type | mid-mount Yanmar YCM60A |
3-blade | |
Cutting width | 60 inches
152 cm |
Cut height | 2 to 4 inch
5 to 10 cm |
Yanmar YBH670 Backhoe | |
|---|---|
Backhoe type | Yanmar YBH670 Backhoe |
Bucket width | 10 inches
25 cm |
12 inches
30 cm | |
16 inches
40 cm | |
24 inches
60 cm | |
Digging depth | 79 inches
200 cm |
Loading height | 52 inches
132 cm |
Swing Arc | 180° |
Bucket force | 2600 lbs
1179 kg |
Dipperstick force | 1618 lbs
733 kg |
Photos
Yanmar YM187
Recommended Implements & Sizing Guide
Engineering recommendations for Yanmar YM187 based on its 18 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 1 to 2 Bottom (12")1 - 2 铧 (30 cm) | Light Duty | Ideal for garden plots and light sandy soil. |
Rotary Cutter / MowerMowing & Clearing | 4 ft (48 in)1.2 m | Light Duty | Pasture clipping and light brush under 1" diameter. |
Rotary TillerSeedbed Prep | 42 to 48 in105 - 120 cm | Light Duty | Covers compact tractor tire width. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Yanmar YM187.
Estimated Continuous Field Runtime: 5.7 hrs
Approximately 5.7 hours of continuous field operation at ~75% rated power on a full tank (5.3 gal / 20.1 L).
Estimated 75% Load Fuel Burn~0.9 gal/hr (3.5 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Yanmar YM187 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Yanmar YM187.
Converted Equivalents:
Horsepower (HP)18 hp
Kilowatts (kW)13.4 kW
Metric Horsepower (PS / CV)18.2 PS
Direct Competitor Comparison
Compare Yanmar YM187 against same-era industry alternatives in the same horsepower class.
Current Model
Yanmar
Yanmar YM187
Engine Power:Diesel (listed): 18 hp / 13.4 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester Type A 15HP
Engine Power:16.7
Production Years:1908 - 1911
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