Bolens HT-20D
The Bolens HT-20D is a tractor produced by Bolens Lawn Tractors. It is equipped with a 863 cc 52.7 ci engine. The listed engine power is Diesel (listed): 19.9 hp / 14.8 kW. Transmission: Eaton 11. Operating weight: 1110 lbs 503 kg.
Engine Power
Diesel (listed): 19.9 hp / 14.8 kW
Fuel & Capacities
5 gal
18.9 L
Transmission
Eaton 11
Operating Weight
1110 lbs
503 kg
Overview
 | 1980 - 1981
Large Frame SeriesGarden tractor
Large Frame Series
Garden tractor |
|---|
Production | |
|---|---|
Manufacturer | Bolens |
Garden tractor | |
Built in Port Washington, Wisconsin, USA | |
Bolens HT-20D Engine | |
|---|---|
19.9HP Wisconsin 863cc 2-cyl diesel | |
Fuel tank | 5 gal
18.9 L |
Engine details ...  | |
Bolens HT-20D Transmission | |
|---|---|
hydrostatic | |
Transmission details ...  |
Mechanical | |
|---|---|
Two-wheel drive | |
Manual steering | |
Disc brakes | |
Open operator station |
Tractor hitch | |
|---|---|
Rear Type | 0 OptOptional |
Power Take-off (PTO) | |
|---|---|
Mid PTO | independent |
Clutch | manual idler |
Dimensions & Tires | |
|---|---|
Wheelbase | 52 inches
132 cm |
Weight | 1110 lbs
503 kg |
Front tire | 18x8.50-8 |
Rear tire | 26x12-12 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 9 |
35 (optional) | |
Battery volts | 12 |
References | |
|---|---|
 | |
Lawn Machines published in 1981, by Bolens | |
Bolens Tractors published in 1982 | |
Service Manual Large Frame Tractors (552665-5) published in 1985 |
Engine
Engine Detail — 863 cc / 52.7 ci Diesel
Manufacturer | Wisconsin WD2-860 |
Fuel Type | Diesel |
Configuration | 2-cylinder, air-cooled horizontal-shaft inline |
The Wisconsin WD2 engine is a rebranded Ducati 2IS22. The engine horsepower was derated in the United States to avoid testing at Nebraska. Export versions were rated at 22 horsepower. | |
Displacement | 863 cc
52.7 ci |
Bore/Stroke | 3.307x3.071 inches
84 x 78 mm |
Power | 19.9 hp
14.8 kW |
Rated RPM | 3000 |
Starter | electric |
Starter volts | 12 |
Oil capacity | 2.7 qts
2.6 L |
Transmission
Transmission — Eaton 11
Transmission | Eaton 11 |
Type | shaft-driven hydrostatic |
Gears | infinite forward and reverse (2-range) |
 | |
Dimensions
Bolens HT-20D Tires | |
|---|---|
Lawn/turf front | 18x8.50-8 |
Lawn/turf rear | 26x12-12 |
Dimensions | |
|---|---|
Wheelbase | 52 inches
132 cm |
Length | 76 inches
193 cm |
Width | 38 inches
96 cm |
Height | 45 inches
114 cm |
Weight | 1110 lbs
503 kg |
Ground clearance | 8.5 inches
21 cm |
Attachments
Attachment overview | |
|---|---|
54" 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. |
54" Mower deck | |
|---|---|
Type | mid-mount Bolens |
3-blade | |
Cutting width | 54 inches
137 cm |
Photos
Bolens HT-20D
Bolens HT-20D
Recommended Implements & Sizing Guide
Engineering recommendations for Bolens Lawn Tractors Bolens HT-20D based on its 19.9 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 Bolens Lawn Tractors Bolens HT-20D.
Estimated Continuous Field Runtime: 4.8 hrs
Approximately 4.8 hours of continuous field operation at ~75% rated power on a full tank (5 gal / 18.9 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
Bolens Lawn Tractors Bolens HT-20D Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Bolens Lawn Tractors Bolens HT-20D.
Converted Equivalents:
Horsepower (HP)19.9 hp
Kilowatts (kW)14.8 kW
Metric Horsepower (PS / CV)20.2 PS
Direct Competitor Comparison
Compare Bolens HT-20D against same-era industry alternatives in the same horsepower class.
Current Model
Bolens Lawn Tractors
Bolens HT-20D
Engine Power:Diesel (listed): 19.9 hp / 14.8 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 184 Lo-Boy
Engine Power:18
Production Years:1977 - 1980
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