The Gravely Pro Master 30-H is a high-powered lawn tractor with a 30 hp rating, placing it within the more powerful models in its class. It was produced from 1989 to 1991, featuring a 3-cylinder diesel liquid-cooled engine that transmits power through a hydrostatic transmission to two-wheel drive. The machine has a listed weight of 635 kg and is designed for use on areas of approximately 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
30 hp
Weight
635 kg
Catalogue coverage
Variants represented
2
Richest spec table
42 rows
Recorded power
30 hp
Recorded weight
635 kg
Transmissions
hydrostatic
Production years
1989-1991
Verified variants
0
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Overview
ManufacturerGravely (a part of Ariens)Reference
Front-mount mowerReference
Two-wheel driveReference
Drum brakesReference
Open operator station.Reference
Engine
30HP Yanmar 1362cc 3-cyl dieselReference
Fuel tank40.1 LReference
Yanmar 3TN82EReference
dieselReference
3-cylinderReference
liquid-cooled inlineReference
Displacement83.1 ciReference
Bore/Stroke82 x 86 mmReference
Power (gross)22.4 kWReference
StarterelectricReference
Starter volts12Reference
Oil capacity4.7 LReference
Transmission
hydrostaticReference
TransmissionSundstrand 15UReference
TypehydrostaticReference
Gearsinfinite forward and reverse (2-range)Reference
Oil capacity7.6 LReference
PTO & Hydraulics
Front PTOindependentReference
ClutchdiscReference
Dimensions
Wheelbase121 cmReference
Weight635 kgReference
Front tire23x10.5-12Reference
Rear tire16x7.5-8Reference
Weight208 kgReference
Lawn/turf front23x10.5-12Reference
Lawn/turf rear16x7.5-8Reference
Length218 cmReference
Width121 cmReference
Height139 cmReference
Gravely Pro Master 30-H attachments
72" front-mount mower deckReference
Electrical
GroundnegativeReference
Charging amps40Reference
Battery volts12Reference
72" Mower deck
Typefront-mount GravelyReference
Type3-blade with hydraulic liftReference
Cutting width182 cmReference
Cut height3 to 11 cmReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
