The Sears GT/19.9 917.25708 is a lawn tractor model with a rated power output of 20 hp, placing it at the higher end of its class. It was manufactured from 1978 to 1980. The GT/19.9 917.25708 features a 2-cylinder petrol air-cooled engine, coupled with a 6-speed gearbox and two-wheel drive. Its listed operating weight is 288 kg, suitable for operations covering 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
20 hp
Weight
288 kg
Catalogue coverage
Variants represented
2
Richest spec table
57 rows
Recorded power
20 hp
Recorded weight
288 kg
Transmissions
6-speed gear
Production years
1978-1980
Verified variants
0
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Overview
DistributorSearsReference
ManufacturerRoperReference
Garden tractorReference
Original price was $2,879 in 1979Reference
Two-wheel driveReference
Manual steeringReference
Mechanical band brakesReference
Open operator station.Reference
Engine
19.9HP Onan 855cc 2-cyl gasolineReference
Fuel tank12.3 LReference
Onan N52MReference
gasolineReference
2-cylinderReference
air-cooled horizontal-shaft opposed twinReference
Displacement52.2 ciReference
Bore/Stroke90 x 67 mmReference
Power (gross)14.8 kWReference
Compression6.5:1Reference
Rated RPM3600Reference
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
Three gears (1-3) plus reverse (R) in two ranges (low/high).Reference
PTO & Hydraulics
Front PTOindependentReference
ClutchmechanicalReference
Dimensions
Weight288 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 weight288 kgReference
Sears GT/19.9 attachments
42" mid-mount mower deckReference
48" mid-mount mower deckReference
snowblowerReference
bladeReference
front-end loaderReference
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.
