Steiner ST-20 Turfmaster

The Steiner ST-20 Turfmaster is a tractor produced by Steiner 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: infinite forward and reverse. Drive type: 4x4 4WD.

Engine Power

Gasoline (listed): 20 hp / 14.9 kW

Drive & Traction

4x4 4WD

Fuel & Capacities

Gasoline

Transmission

infinite forward and reverse

Overview

	1982 - 1987 MPV Series

Production
Manufacturer	Steiner

Variants
75-70110	ST-20

Steiner ST-20 Engine
20HP Onan 781cc 2-cyl gasoline
Engine details ...

Steiner ST-20 Transmission
hydraulic drive
Transmission details ...

Mechanical
Drive	4x4 4WD
Open operator station.

Dimensions & Tires
Full dimensions and tires ...

Electrical
Ground	negative
Battery volts	12

Engine

Engine Detail — 781 cc / 47.7 ci Gasoline

Manufacturer	Onan B48G
Fuel Type	Gasoline
Configuration	2-cylinder, air-cooled horizontal-shaft opposed twin
Displacement	781 cc 47.7 ci
Bore/Stroke	3.25x2.875 inches 83 x 73 mm
Power	20 hp 14.9 kW
Starter	electric
Starter volts	12

Transmission

Transmission — infinite forward and reverse hydraulic drive

Type	hydraulic drive
Gears	infinite forward and reverse

Dimensions

Steiner ST-20 Tires

Dimensions

Photos

Steiner ST-20 Turfmaster

Recommended Implements & Sizing Guide

Engineering recommendations for Steiner Lawn Tractors Steiner ST-20 Turfmaster 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 Steiner Lawn Tractors Steiner ST-20 Turfmaster.

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

Steiner Lawn Tractors Steiner ST-20 Turfmaster Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Steiner Lawn Tractors Steiner ST-20 Turfmaster.

Enter value:

Unit:

Converted Equivalents:

Horsepower (HP)20 hp

Kilowatts (kW)14.9 kW

Metric Horsepower (PS / CV)20.3 PS

Direct Competitor Comparison

Compare Steiner ST-20 Turfmaster against same-era industry alternatives in the same horsepower class.

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