The Sears GT/18 Hydro 917.25707 is a lawn tractor with an approximate engine power rating of 18 hp, a figure typical for its class. It was manufactured in 1978. The model features a 2-cylinder petrol air-cooled engine, paired with two-wheel drive and a hydrostatic transmission. Its operating weight is listed at 312 kg, and it is suitable for use on areas of 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
312 kg
Catalogue coverage
Variants represented
2
Richest spec table
48 rows
Recorded power
18 hp
Recorded weight
312 kg
Transmissions
hydrostatic
Production years
1978-1978
Verified variants
0
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Overview
DistributorSearsReference
ManufacturerRoperReference
Garden tractorReference
Original price was $2,479 in 1978Reference
Two-wheel driveReference
Manual steeringReference
Open operator station.Reference
Variants
GT/18gearReference
GT18HhydrostaticReference
Engine
18HP Onan 781cc 2-cyl gasolineReference
Fuel tank7.6 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
hydrostaticReference
Typebelt-driven hydrostaticReference
Gearsinfinite forward and reverseReference
Oil capacity4.3 LReference
Oil typeType F ATFReference
Dimensions
Weight312 kgReference
Front tire16x6.50-8Reference
Rear tire23x10.00-12Reference
Lawn/turf front16x6.50-8Reference
Lawn/turf rear23x10.00-12Reference
Length173 cmReference
Width92 cmReference
Height105 cmReference
Shipping weight312 kgReference
Sears GT/18 Hydro attachments
42" mid-mount mower deckReference
48" mid-mount mower deckReference
snowblowerReference
bladeReference
front-end loaderReference
Electrical
GroundnegativeReference
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.
