New Holland GT20A
The New Holland GT20A is a tractor produced by New Holland Lawn Tractors. The listed engine power is Gasoline (gross): 20 hp / 14.9 kW. Transmission: Eaton. Operating weight: 860 lbs 390 kg.
Engine Power
Gasoline (gross): 20 hp / 14.9 kW
Fuel & Capacities
4 gal
15.1 L
Transmission
Eaton
Operating Weight
860 lbs
390 kg
Overview
 | 2004 - 2006
GT SeriesGarden tractorToro built
GT Series
Garden tractor
Toro built |
|---|
Production | |
|---|---|
Distributor | New Holland |
Manufacturer | Toro |
Garden tractor | |
New Holland GT20A Engine | |
|---|---|
20HP Kohler 2-cyl gasoline | |
Fuel tank | 4 gal
15.1 L |
Engine details ...  | |
New Holland GT20A Transmission | |
|---|---|
hydrostatic | |
Transmission details ...  |
Mechanical | |
|---|---|
Two-wheel drive | |
Steering | manual |
Open operator station. | |
Power Take-off (PTO) | |
|---|---|
Front PTO | independent |
Clutch | electric |
Dimensions & Tires | |
|---|---|
Wheelbase | 52 inches
132 cm |
Weight | 860 lbs
390 kg |
Front tire | 16x7.5-8 |
Rear tire | 23x10.50-12 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging amps | 15 |
Battery CCA | 340 |
Battery volts | 12 |
References | |
|---|---|
 | |
Lawn and Garden Equipment published in 2004, by New Holland |
Engine
Engine Detail — Gasoline
Manufacturer | Kohler Command |
Fuel Type | Gasoline |
Configuration | 2-cylinder, air-cooled horizontal-shaft V-Twin |
Power (gross) | 20 hp
14.9 kW |
Starter | electric |
Starter volts | 12 |
Oil capacity | 2 qts
1.9 L |
Transmission
Transmission — Eaton
Transmission | Eaton |
Type | shaft-driven hydrostatic |
Gears | infinite forward and reverse (2-range) |
Cruise control standard. | |
 | |
Dimensions
New Holland GT20A Tires | |
|---|---|
Ag rear | 23x10.50-12 |
Lawn/turf front | 16x7.5-8 |
Lawn/turf rear | 23x10.50-12 |
Dimensions | |
|---|---|
Wheelbase | 52 inches
132 cm |
Length | 76.5 inches
194 cm |
Width | 40 inches
101 cm |
Weight | 860 lbs
390 kg |
Front axle | Cast-iron |
Attachments
Attachment overview | |
|---|---|
44" mid-mount mower deck | |
48" mid-mount mower deck | |
52" mid-mount mower deck | |
60" mid-mount mower deck | |
Snowblower | |
Blade | |
Front-end loader | |
Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments. |
Photos
New Holland GT20A tractor photo
Recommended Implements & Sizing Guide
Engineering recommendations for New Holland Lawn Tractors New Holland GT20A 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 New Holland Lawn Tractors New Holland GT20A.
Estimated Continuous Field Runtime: 3.8 hrs
Approximately 3.8 hours of continuous field operation at ~75% rated power on a full tank (4 gal / 15.1 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
New Holland Lawn Tractors New Holland GT20A Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for New Holland Lawn Tractors New Holland GT20A.
Converted Equivalents:
Horsepower (HP)20 hp
Kilowatts (kW)14.9 kW
Metric Horsepower (PS / CV)20.3 PS
Direct Competitor Comparison
Compare New Holland GT20A against same-era industry alternatives in the same horsepower class.
Current Model
New Holland Lawn Tractors
New Holland GT20A
Engine Power:Gasoline (gross): 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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