The Sears GT/18 is a lawn tractor with an approximate power rating of 18 hp, a typical figure for its class. It was manufactured from 1978 to 1980. The GT/18 features a 2-cylinder petrol air-cooled engine, paired with a hydrostatic transmission and two-wheel drive. Its operating weight is 280 kg, and it is suitable for operations covering up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
18 hp
Weight
280 kg
Catalogue coverage
Variants represented
2
Richest spec table
59 rows
Recorded power
18 hp
Recorded weight
280 kg
Transmissions
6-speed gear
Production years
1978-1980
Verified variants
0
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Overview
DistributorSearsReference
ManufacturerRoperReference
Garden tractorReference
Original price was $2,579 in 1979Reference
Two-wheel driveReference
Manual steeringReference
Mechanical band brakesReference
Open operator station.Reference
Variants
GT/18gearReference
GT18HhydrostaticReference
Engine
18HP Onan 781cc 2-cyl gasolineReference
Fuel tank12.3 LReference
Onan B48MReference
gasolineReference
2-cylinderReference
air-cooled horizontal-shaft opposed twinReference
Displacement47.7 ciReference
Bore/Stroke83 x 73 mmReference
Power (gross)13.4 kWReference
StarterelectricReference
Starter volts12Reference
Oil capacity1.7 LReference
Oil change25 hReference
Transmission
6-speed gearReference
TransmissionPeerlessReference
Typebelt-driven gearReference
Gears6 forward and 2 reverseReference
Clutchmechanical idler pulleyReference
Oil capacity4.7 LReference
Oil typeSAE 30Reference
Oil change480 hReference
PTO & Hydraulics
Front PTOindependentReference
ClutchmechanicalReference
Dimensions
Weight280 kgReference
Front tire16x6.50-8Reference
Rear tire23x10.00-12Reference
Lawn/turf front16x6.50-8Reference
Lawn/turf rear23x10.00-12Reference
Length173 cmReference
Width92 cmReference
Height101 cmReference
Shipping weight280 kgReference
Sears GT/18 attachments
42" mid-mount mower deckReference
48" mid-mount mower deckReference
snowblowerReference
bladeReference
front-end loaderReference
GT/18 Serial Numbers
1978917.25706 (model code)Reference
1979917.25711 (model code)Reference
FAQ: How to read a serial number table.Reference
Electrical
GroundnegativeReference
Charging systemalternatorReference
Charging amps15Reference
Battery volts12Reference
Attachment overview
42" mid-mount mower deckReference
48" mid-mount mower deckReference
SnowblowerReference
BladeReference
Front-end loaderReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
