Sears ST/16 917.25740

The Sears ST/16 917.25740 is a tractor produced by Sears Lawn Tractors. It is equipped with a 453 cc 27.66 ci engine. The listed engine power is Gasoline (gross): 16 hp / 11.9 kW. Transmission: 6 forward and 2 reverse. Operating weight: 670 lbs 303 kg.

Engine Power

Gasoline (gross): 16 hp / 11.9 kW

Fuel & Capacities

Gasoline

Transmission

6 forward and 2 reverse

Operating Weight

670 lbs 303 kg

Overview

	1973 - 1976 Model year 1973197419751976 Garden tractorRoper built Garden tractor Roper built

Production
Distributor	Sears
Manufacturer	Roper
Garden tractor
Original price was $1,017

Sears ST/16 Engine
16HP Techumseh 453cc 1-cyl gasoline
Engine details ...

Sears ST/16 Transmission
6-speed gear
Transmission details ...

Mechanical
Two-wheel drive
Manual steering
Open operator station.

Tractor hitch
Type	Sears 3-Point OptOptional

Power Take-off (PTO)
Mid PTO	independent
Clutch	manual

Dimensions & Tires
Wheelbase	43.5 inches 110 cm
Weight	670 lbs 303 kg
Front tire	16x5.50
Rear tire	23x9.50
Full dimensions and tires ...

Electrical
Ground	negative
Battery volts	12

References

Owners manual 917.25740 (2808R-19-2.73) published in 1973
Lawn and Garden Tractors published in 1973, by Sears
Lawn and Garden Tractors published in 1974, by Sears
Suburban, Farm and Ranch Catalog published in 1973, by Sears

Engine

Engine Detail — 453 cc / 27.66 ci Gasoline

Manufacturer	Techumseh OH160
Fuel Type	Gasoline
Configuration	1-cylinder, air-cooled horizontal-shaft
Displacement	453 cc 27.66 ci
Bore/Stroke	3.50x2.875 inches 89 x 73 mm
Power (gross)	16 hp 11.9 kW
Starter	electric
Starter volts	12
Oil change	25 h
Sparkplug gap	0.030 inches 0.762 mm
Intake valve clearance	0.005 inches 0.127 mm
Exhaust valve clearance	0.010 inches 0.254 mm

Sears ST/16 Engine

Transmission

Transmission — 6 forward and 2 reverse belt-driven gear

Type	belt-driven gear
Gears	6 forward and 2 reverse
Three gears (1-3) plus reverse (R) with two ranges (low and high).

Dimensions

Sears ST/16 Tires
Lawn/turf front	16x5.50
Lawn/turf rear	23x9.50

Dimensions
Wheelbase	43.5 inches 110 cm
Length	66 inches 167 cm
Width	36.5 inches 92 cm
Height	40 inches 101 cm
Shipping weight	670 lbs 303 kg

Attachments

Attachment overview
42" mid-mount mower deck
48" 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

Sears ST/16, right side.

Sears ST/16, left side.

Sears ST/16 with Kwik-Way front-end loader.

Recommended Implements & Sizing Guide

Engineering recommendations for Sears Lawn Tractors Sears ST/16 917.25740 based on its 16 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 Sears Lawn Tractors Sears ST/16 917.25740.

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

Sears Lawn Tractors Sears ST/16 917.25740 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Sears Lawn Tractors Sears ST/16 917.25740.

Enter value:

Unit:

Converted Equivalents:

Horsepower (HP)16 hp

Kilowatts (kW)11.9 kW

Metric Horsepower (PS / CV)16.2 PS

Direct Competitor Comparison

Compare Sears ST/16 917.25740 against same-era industry alternatives in the same horsepower class.

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