Compare/Gravely 8171 vs Gravely Pro Master 18-H

Gravely 8171 vs Gravely Pro Master 18-H

Verdict: Gravely 8171 vs Gravely Pro Master 18-H

The Gravely 8171 and the Gravely Pro Master 18-H are both lawn tractors — here is how they stack up on the figures that matter. Gravely Pro Master 18-H leads on rated power with 18 hp against 17 hp. Gravely 8171 is the lighter machine (424 kg vs 444 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Gravely Pro Master 18-H is the newer design (1989 vs 1978). In short: choose the Gravely Pro Master 18-H for outright pulling power, or the Gravely 8171 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

Gravely

Fit score

Best match

Clear

Gravely

Fit score

Best match

Clear

Rated power

17 hp

18 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

GravelyReference

Gravely (a part of Ariens)Reference

Four gears (1-4) in two ranges (low/high) with directional control lever (forward/reverse). Reverse speeds are the same in high or low range.Reference

air-cooled horizontal-shaft horizontally-opposedReference

Engine

Displacement

49.8 ciReference

42.18 ciReference

Bore/Stroke

76 x 83 mmReference

79 x 70 mmReference

Power (gross)

12.3 kWReference

13.4 kWReference

Starter

electricReference

Starter volts

12Reference

Oil capacity

1.9 LReference

5.7 LReference

Fuel tank

—

20.1 LReference

Transmission

Gears

8 forward and 4 reverseReference

infinite forward and reverseReference

Transmission

—

Eaton 850Reference

Capacities

Fuel

20.1 LReference

—

PTO & Hydraulics

Hydraulic system

1.4 LReference

—

Type

shaft-driven gearReference

hydrostaticReference

Capacity

1.4 LReference

—

Pressure

82.7 barReference

—

Pump flow

6.4 lpmReference

—

Mid PTO

independentReference

—

Clutch

mechanicalReference

electricReference

Front PTO

—

independentReference

Dimensions

Wheelbase

121 cmReference

—

Weight

424 kgReference

444 kgReference

Front tire

16x7.50-8Reference

18x8.50-8Reference

Rear tire

23x10.50-12Reference

4.80/4.00-8Reference

Lawn/turf front

16x7.50-8Reference

18x8.50-8Reference

Lawn/turf rear

23x10.50-12Reference

4.80/4.00-8Reference

Length

191 cmReference

266 cmReference

Width

106 cmReference

—

Height

109 cmReference

121 cmReference

Shipping weight

424 kgReference

—

Ground clearance

17 cmReference

—

Electrical

Ground

negativeReference

Charging system

flywheel alternatorReference

—

Charging amps

15Reference

Battery volts

12Reference

Battery AH

42Reference

—

Gravely Pro Master 18-H attachments

Attachment overview

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.