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Bolens HT-20

The Bolens HT-20 is a tractor produced by Bolens Lawn Tractors. It is equipped with a 868 cc 53 ci engine. The listed engine power is Gasoline (gross): 19.5 hp / 14.5 kW. Transmission: Sundstrand 15. Drive type: shaft. Operating weight: 1090 lbs 494 kg.

Engine Power
Gasoline (gross): 19.5 hp / 14.5 kW
Drive & Traction
shaft
Fuel & Capacities
5 gal 18.9 L
Transmission
Sundstrand 15
Operating Weight
1090 lbs 494 kg

Overview

Bolens HT-20 tractor photo
1973 - 1978 Large Frame SeriesGarden tractor Large Frame Series Garden tractor
Production
Manufacturer
Bolens
Garden tractor
Built in Port Washington, Wisconsin, USA
The Bolens HT-20 carried model codes 2086 and 2087.
Bolens HT-20 Engine
19.5HP Kohler 868cc 2-cyl gasoline
Fuel tank
5 gal 18.9 L
Engine details ...
Bolens HT-20 Transmission
hydrostatic
Transmission details ...
Mechanical
Two-wheel drive
Steering
manual
Disc brakes
Open operator station.
Tractor hitch
Rear Type
0 OptOptional
Type
sleeve hitch OptOptional
Power Take-off (PTO)
Clutch
mechanical
Front PTO Type
2000
Dimensions & Tires
Wheelbase
52 inches 132 cm
Weight
1090 lbs 494 kg
Front tire
18-8.50x8
Rear tire
26-12.00x12
Full dimensions and tires ...
Electrical
Ground
negative
Charging system
alternator
Charging amps
15
Battery volts
12
Battery AH
45
References
HT-20 references literature
Lawn and garden tractors, attachments, accessories published in 1974, by Bolens
Lawn and Garden Tractors published in 1974, by Bolens
Lawn and Garden Tractors published in 1975, by Bolens
Lawn and Garden Tractors published in 1976, by Bolens
Lawn and Garden Tractors published in 1977, by Bolens
HT-20 published in 1973, by Bolens
Owner's Manual HT-20 (2086) (552667) published in 1973
Service Manual Large Frame Tractors (552665-5) published in 1985
Products for Bolens Tractors published in 1973, by Johnson - ARPS

Engine

Engine Detail — 868 cc / 53 ci Gasoline

Manufacturer
Kohler K532
Fuel Type
Gasoline
Configuration
2-cylinder, air-cooled horizontal-shaft opposed-twin
Displacement
868 cc 53 ci
Bore/Stroke
3.375x3.00 inches 86 x 76 mm
Power (gross)
19.5 hp 14.5 kW
Air cleaner
dry
Rated RPM
3450
Starter
electric
Starter volts
12
Sparkplug gap
0.025 inches 0.635 mm
Point gap
0.020 inches 0.508 mm
Oil capacity
4 qts 3.8 L
Oil change
50 h

Transmission

Transmission — Sundstrand 15

Transmission
Sundstrand 15
Type
shaft-driven hydrostatic
Gears
infinite forward and reverse
Oil capacity
10 qts 9.5 L
Oil type
ATF F
Oil change
200 h
HT-20 15 shaft-driven hydrostatic speeds
ATF F

Dimensions

Bolens HT-20 Tires
Lawn/turf front
18-8.50x8
Lawn/turf rear
26-12.00x12
Dimensions
Wheelbase
52 inches 132 cm
Length
75 inches 190 cm
Width
38 inches (min) 96 cm
47 inches (max) 119 cm
Height
45 inches 114 cm
Shipping weight
1090 lbs 494 kg
Ground clearance
8.5 inches 21 cm

Attachments

Attachment overview
54" mid-mount mower deck
Snowblower
Blade
Front-end loader
Backhoe
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
Cutting width
54 inches 137 cm
Drive
shaft
Brantly C Backhoe
Backhoe type
Brantly C Backhoe

Photos

Bolens HT-20

Bolens HT-20

Bolens HT-20

Bolens HT-20

Bolens HT-20

Bolens HT-20

Bolens HT-20

Bolens HT-20

Bolens HT-20 operator station and controls.

Bolens HT-20 operator station and controls.

Recommended Implements & Sizing Guide

Engineering recommendations for Bolens Lawn Tractors Bolens HT-20 based on its 19.5 HP power envelope and ASAE agricultural standards.

Implement & OperationRecommended SizeWorkload RatingEngineering Notes
Moldboard PlowPrimary Tillage
1 to 2 Bottom (12")1 - 2 铧 (30 cm)Light DutyIdeal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing
4 ft (48 in)1.2 mLight DutyPasture clipping and light brush under 1" diameter.
Rotary TillerSeedbed Prep
42 to 48 in105 - 120 cmLight DutyCovers 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-20.

Estimated Continuous Field Runtime: 4.9 hrs

Approximately 4.9 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 (3.8 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-20 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Bolens Lawn Tractors Bolens HT-20.

Converted Equivalents:

Horsepower (HP)19.5 hp
Kilowatts (kW)14.5 kW
Metric Horsepower (PS / CV)19.8 PS

Direct Competitor Comparison

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Engine Power:Gasoline (gross): 19.5 hp / 14.5 kW
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