Stihl S 20
The Stihl S 20 is a tractor produced by Stihl. It is equipped with a 61.33 ci 1.0 L engine. The listed engine power is Diesel (listed): 20 hp / 14.9 kW. Transmission: Hurth 819. Operating weight: 2,162 lbs 980 kg.
Engine Power
Diesel (listed): 20 hp / 14.9 kW
Fuel & Capacities
5.8 gal
22.0 L
Transmission
Hurth 819
Operating Weight
2,162 lbs
980 kg
Overview
 | 1960 - 1961 |
|---|
Production | |
|---|---|
Manufacturer | Stihl |
Stihl S 20 Engine | |
|---|---|
MWM 1.0L 2-cyl diesel | |
Fuel tank | 5.8 gal
22.0 L |
Engine details ...  | |
Stihl S 20 Transmission | |
|---|---|
6-speed unsynchronized gear | |
Transmission details ...  |
Stihl S 20 Power | |
|---|---|
Engine | 20 hp
14.9 kW |
Mechanical | |
|---|---|
Two-wheel drive | |
Band brakes | |
Open operator station. |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 |
Dimensions & Tires | |
|---|---|
Weight | 2,162 lbs
980 kg |
Front tire | 4.50-16 |
Rear tire | 7.00-30 |
Full dimensions and tires ...  | |
Engine
Engine Detail — 61.33 ci / 1.0 L Diesel
Manufacturer | MWM AKD 10Z |
Fuel Type | Diesel |
Configuration | 2-cylinder, air-cooled |
Displacement | 61.33 ci
1.0 L |
Power | 20 hp
14.9 kW |
Rated RPM | 3000 |
Starter volts | 12 |
Oil capacity | 3.7 qts
3.5 L |
Transmission
Transmission — Hurth 819
Transmission | Hurth 819 |
Type | unsynchronized gear |
Gears | 6 forward and 1 reverse |
Clutch | single dry plate |
Oil capacity | 10 qts
9.5 L |
 | |
Dimensions
Stihl S 20 Tires | |
|---|---|
Standard tires (ag) | Front: 4.50-16. Rear: 7.00-30 |
Optional tires (ag) | Front: 4.50-16. Rear: 8.00-28 |
Front: 5.00-16. Rear: 8.00-32 | |
Front: 5.00-16. Rear: 10.00-28 | |
Dimensions | |
|---|---|
Width | 57.9 inches
147 cm |
Height | 63 inches
160 cm |
Weight | 2,162 lbs
980 kg |
Rear tread | 49.2 to 59.1 inches
124 to 150 cm |
Photos
Stihl S 20 tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for Stihl S 20 based on its 20 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. |
Disc HarrowSecondary Tillage | 5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片) | Light Duty | Small acreage soil break-up and secondary aeration. |
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 Stihl S 20.
Estimated Continuous Field Runtime: 5.6 hrs
Approximately 5.6 hours of continuous field operation at ~75% rated power on a full tank (5.8 gal / 22 L).
Estimated 75% Load Fuel Burn~1 gal/hr (3.9 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
Stihl S 20 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Stihl S 20.
Converted Equivalents:
Horsepower (HP)20 hp
Kilowatts (kW)14.9 kW
Metric Horsepower (PS / CV)20.3 PS
Direct Competitor Comparison
Compare Stihl S 20 against same-era industry alternatives in the same horsepower class.
Current Model
Stihl
Stihl S 20
Engine Power:Diesel (listed): 20 hp / 14.9 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 184 Lo-Boy
Engine Power:18
Production Years:1977 - 1980
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