Yanmar YM1820
The Yanmar YM1820 is a tractor produced by Yanmar. It is equipped with a 78.1 ci 1.3 L engine. The listed engine power is Diesel (listed): 18 hp / 13.4 kW. Transmission: 12 forward and 4 reverse. Operating weight: 2314 lbs 1049 kg.
Engine Power
Diesel (listed): 18 hp / 13.4 kW
Fuel & Capacities
Diesel
Transmission
12 forward and 4 reverse
Operating Weight
2314 lbs
1049 kg
Overview
 | 1982 - 1983
YM20 SeriesCompact Utility tractor
YM20 Series
Compact Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Yanmar |
Compact Utility tractor | |
Variants | |
|---|---|
YM1802 | 2WD gear |
YM1802D | 4WD gear |
YM1820 | 2WD power shift |
YM1820D | 4WD power shift |
Yanmar YM1820 Engine | |
|---|---|
Yanmar 1.3L 3-cyl diesel | |
Engine details ...  |
Yanmar YM1820 Power | |
|---|---|
Engine | 18 hp
13.4 kW |
Mechanical | |
|---|---|
Two- or four-wheel drive | |
Open operator station. |
Dimensions & Tires | |
|---|---|
Weight | 2314 lbs
1049 kg |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
Engine
Engine Detail — 78.1 ci / 1.3 L Diesel
Manufacturer | Yanmar 3T80U-NB |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled |
Displacement | 78.1 ci
1.3 L |
Bore/Stroke | 3.15x3.35 inches
80 x 85 mm |
Power | 18 hp
13.4 kW |
Rated RPM | 2400 |
Starter volts | 12 |
Transmission
Transmission options | |
|---|---|
9-speed partial power shift | |
12-speed creeper |
Transmission — 9 forward and 3 reverse partial power shift
Type | partial power shift |
Gears | 9 forward and 3 reverse |
Three power shift gears, plus reverse, with three ranges. | |
Transmission | |
Type | creeper |
Gears | 12 forward and 4 reverse |
Dimensions
Yanmar YM1820 Tires |
|---|
Dimensions | |
|---|---|
Length | 104 inches
264 cm |
Width | 45 inches
114 cm |
Height | 70 inches
177 cm |
Weight | 2314 lbs
1049 kg |
Photos
Yanmar YM1820D, right side.
Yanmar YM1820D with front-end loader.
Yanmar YM1820D with front-end loader.
Recommended Implements & Sizing Guide
Engineering recommendations for Yanmar YM1820 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 YM1820.
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 YM1820 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Yanmar YM1820.
Converted Equivalents:
Horsepower (HP)18 hp
Kilowatts (kW)13.4 kW
Metric Horsepower (PS / CV)18.2 PS
Direct Competitor Comparison
Compare Yanmar YM1820 against same-era industry alternatives in the same horsepower class.
Current Model
Yanmar
Yanmar YM1820
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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