Sears ST/12 917.2573
The Sears ST/12 917.2573 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 (listed): 12 hp / 8.9 kW. Transmission: 6 forward and 2 reverse. Operating weight: 641 lbs 290 kg.
Engine Power
Gasoline (listed): 12 hp / 8.9 kW
Fuel & Capacities
Gasoline
Transmission
6 forward and 2 reverse
Operating Weight
641 lbs
290 kg
Overview
![]() | 1973 - 1976
Model year 1973-197419751976
Garden tractorRoper built
Garden tractor
Roper built |
|---|
Production | |
|---|---|
Distributor | Sears |
Manufacturer | Roper |
Garden tractor | |
Original price was $970 in 1974 | |
Sears ST/12 Engine | |
|---|---|
12HP Tecumseh 453cc 1-cyl gasoline | |
Engine details ... |
Sears ST/12 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 | 43.4 inches
110 cm |
Weight | 641 lbs
290 kg |
Front tire | 16x5.50 |
Rear tire | 22.5x7.50 |
Full dimensions and tires ... | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
![]() | |
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 | |
Spring through Summer 1973 published by Sears* | |
1974 Suburban Farm and Ranch Catalog published by Sears | |
Spring through Summer 1974 published by Sears | |
*Publication contains known errors. |
Engine
Engine Detail — 453 cc / 27.66 ci Gasoline
Manufacturer | Tecumseh HH120 |
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 | 12 hp
8.9 kW |
Starter | electric |
Starter volts | 12 |
Sears ST/12 Engine | |
|---|---|
![]() |
Transmission
Transmission — 6 forward and 2 reverse belt-driven gear
Type | belt-driven gear |
Gears | 6 forward and 2 reverse |
![]() | |
Dimensions
Sears ST/12 Tires | |
|---|---|
Lawn/turf front | 16x5.50 |
Lawn/turf rear | 22.5x7.50 |
Dimensions | |
|---|---|
Wheelbase | 43.4 inches
110 cm |
Length | 68.5 inches
173 cm |
Width | 36.5 inches
92 cm |
Height (steering wheel) | 44 inches
111 cm |
Shipping weight | 641 lbs
290 kg |
Attachments
Attachment overview | |
|---|---|
42" mid-mount mower deck | |
48" 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. |
Photos
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Sears Lawn Tractors Sears ST/12 917.2573.
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/12 917.2573 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Sears Lawn Tractors Sears ST/12 917.2573.
Converted Equivalents:
Horsepower (HP)12 hp
Kilowatts (kW)8.9 kW
Metric Horsepower (PS / CV)12.2 PS
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