Compare/Sears GT/18 Hydro 917.25707 vs Sears GT/19.9 917.25708

Sears GT/18 Hydro 917.25707 vs Sears GT/19.9 917.25708

Verdict: Sears GT/18 Hydro 917.25707 vs Sears GT/19.9 917.25708

The Sears GT/18 Hydro 917.25707 and the Sears GT/19.9 917.25708 are both lawn tractors — here is how they stack up on the figures that matter. Sears GT/19.9 917.25708 leads on rated power with 20 hp against 18 hp. Sears GT/19.9 917.25708 is the lighter machine (288 kg vs 312 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Sears GT/19.9 917.25708 holds more fuel (12.3 L vs 7.6 L) for longer stints between fills. In short: choose the Sears GT/19.9 917.25708 for outright pulling power, or the Sears GT/18 Hydro 917.25707 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Sears

Fit score

Best match

Clear

Sears

Fit score

Best match

Clear

Rated power

18 hp

20 hp

Confidence

40%

Guide price

—

Overview

Distributor

SearsReference

Manufacturer

RoperReference

air-cooled horizontal-shaft opposed twinReference

Three gears (1-3) plus reverse (R) in two ranges (low/high).Reference

Variants

GT/18

gearReference

—

GT18H

hydrostaticReference

—

Engine

Fuel tank

7.6 LReference

12.3 LReference

Displacement

47.7 ciReference

52.2 ciReference

Bore/Stroke

83 x 73 mmReference

90 x 67 mmReference

Power (gross)

13.4 kWReference

14.8 kWReference

Starter

electricReference

Starter volts

12Reference

Oil capacity

4.3 LReference

4.7 LReference

Oil change

25 hReference

480 hReference

Compression

—

6.5:1Reference

Rated RPM

—

3600Reference

Transmission

Type

belt-driven hydrostaticReference

belt-driven gearReference

Gears

infinite forward and reverseReference

6 forward and 2 reverseReference

Oil type

Type F ATFReference

SAE 30Reference

Transmission

—

PeerlessReference

Dimensions

Weight

312 kgReference

288 kgReference

Front tire

16x6.50-8Reference

Rear tire

23x10.00-12Reference

Lawn/turf front

16x6.50-8Reference

Lawn/turf rear

23x10.00-12Reference

Length

173 cmReference

Width

92 cmReference

Height

105 cmReference

101 cmReference

Shipping weight

312 kgReference

288 kgReference

Sears GT/18 Hydro attachments

Electrical

Ground

negativeReference

Battery volts

12Reference

Charging system

—

alternatorReference

Charging amps

—

15Reference

Attachment overview

PTO & Hydraulics

Front PTO

—

independentReference

Clutch

—

mechanical idler pulleyReference

Sears GT/19.9 attachments

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.