Toro 520
The Toro 520 is a tractor produced by Toro Lawn Tractors. It is equipped with a 781 cc 47.7 ci engine. The listed engine power is Gasoline (listed): 20 hp / 14.9 kW. Transmission: Eaton 1100-032. Operating weight: 646 lbs 293 kg.
Engine Power
Gasoline (listed): 20 hp / 14.9 kW
Fuel & Capacities
3 gal
11.4 L
Transmission
Eaton 1100-032
Operating Weight
646 lbs
293 kg
Overview
 | 1990 - 1997
Garden tractor |
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Note: the Toro model 520 is the same as the Wheel Horse 520-H. The following data is from the 520-H listing. |
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Production | |
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Manufacturer | Toro |
Garden tractor | |
Built in South Bend, Indiana, USA | |
Toro 520 Engine | |
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20HP Onan 781cc 2-cyl gasoline | |
Fuel tank | 3 gal
11.4 L |
Engine details ...  | |
Toro 520 Transmission | |
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hydrostatic | |
Transmission details ...  |
Mechanical | |
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Two-wheel drive | |
Manual steering | |
Mechanical band brakes | |
Open operator station. |
Power Take-off (PTO) | |
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Mid PTO | independent |
Clutch | mechanical |
Dimensions & Tires | |
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Weight | 646 lbs
293 kg |
Front tire | 16x6.50-8 |
Rear tire | 23x9.50-12 |
Full dimensions and tires ...  | |
Electrical | |
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Ground | negative |
Charging system | alternator |
Charging amps | 20 |
Battery CCA | 260 |
Battery volts | 12 |
References | |
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 | |
Lawn and Garden Tractors published in 1996, by Toro |
Engine
Note: the Toro model 520 is the same as the Wheel Horse 520-H. The following data is from the 520-H listing. |
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Engine Detail — 781 cc / 47.7 ci Gasoline
Manufacturer | Onan P220G |
Fuel Type | Gasoline |
Configuration | 2-cylinder, air-cooled |
Displacement | 781 cc
47.7 ci |
Bore/Stroke | 3.2580x2.875 inches
83 x 73 mm |
Power | 20 hp
14.9 kW |
Compression | 7.0:1 |
Rated RPM | 3600 |
Idle RPM | 1400-3600 |
Starter volts | 12 |
Oil capacity | 1.7 qts
1.6 L |
Sparkplug | Champion RS14YC |
Sparkplug gap | 0.025 inches
0.635 mm |
Transmission
Note: the Toro model 520 is the same as the Wheel Horse 520-H. The following data is from the 520-H listing. |
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Transmission — Eaton 1100-032
Transmission | Eaton 1100-032 |
Type | belt-driven hydrostatic |
Gears | infinite forward and reverse |
Oil capacity | 5 qts
4.7 L |
Oil type | SAE 10W-30 |
 | |
Dimensions
Note: the Toro model 520 is the same as the Wheel Horse 520-H. The following data is from the 520-H listing. |
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Toro 520 Tires | |
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Lawn/turf front | 16x6.50-8 |
Lawn/turf rear | 23x9.50-12 |
Dimensions | |
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Length | 65 inches
165 cm |
Width | 38 inches
96 cm |
Height | 45.5 inches
115 cm |
Weight | 646 lbs
293 kg |
Attachments
Note: the Toro model 520 is the same as the Wheel Horse 520-H. The following data is from the 520-H listing. |
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Attachment overview | |
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36" mid-mount mower deck | |
42" mid-mount mower deck | |
48" mid-mount mower deck | |
Snowblower | |
Blade | |
Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments. |
Photos
Toro 520-H with mower deck, right side.
Toro 520-H with blade and chains, left side.
Recommended Implements & Sizing Guide
Engineering recommendations for Toro Lawn Tractors Toro 520 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 Toro Lawn Tractors Toro 520.
Estimated Continuous Field Runtime: 2.9 hrs
Approximately 2.9 hours of continuous field operation at ~75% rated power on a full tank (3 gal / 11.4 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
Toro Lawn Tractors Toro 520 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Toro Lawn Tractors Toro 520.
Converted Equivalents:
Horsepower (HP)20 hp
Kilowatts (kW)14.9 kW
Metric Horsepower (PS / CV)20.3 PS
Direct Competitor Comparison
Compare Toro 520 against same-era industry alternatives in the same horsepower class.
Current Model
Toro Lawn Tractors
Toro 520
Engine Power:Gasoline (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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