The Gravely GEM 12.5 is a lawn tractor with a 13 hp rating, positioning it in the middle of its class in terms of power output. It was produced from 1991 to 1992. The model features a 1-cylinder petrol air-cooled engine, coupled with a hydrostatic transmission for two-wheel drive operation. Its listed weight is 276 kg, suitable for tasks involving up to 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
13 hp
Weight
276 kg
Catalogue coverage
Variants represented
2
Richest spec table
43 rows
Recorded power
13 hp
Recorded weight
276 kg
Transmissions
hydrostatic
Production years
1991-1992
Verified variants
0
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Overview
ManufacturerGravely (a part of Ariens)Reference
Lawn tractorReference
Two-wheel driveReference
Manual steeringReference
Open operator station.Reference
Engine
12.5HP Kohler 1-cyl gasolineReference
Fuel tank17.0 LReference
KohlerReference
gasolineReference
1-cylinderReference
air-cooled vertical-shaftReference
Power (gross)9.3 kWReference
StarterelectricReference
Starter volts12Reference
Oil capacity1.9 LReference
Transmission
hydrostaticReference
TransmissionEaton 850Reference
Typebelt-driven hydrostaticReference
Gearsinfinite forward and reverseReference
Oil capacity5.7 LReference
PTO & Hydraulics
Mid PTOindependentReference
ClutchelectricReference
Mid PTO TypepulleyReference
Dimensions
Wheelbase121 cmReference
Weight276 kgReference
Front tire16x6.50-8Reference
Rear tire23x8.50-12Reference
Lawn/turf front16x6.50-8Reference
Lawn/turf rear23x8.50-12Reference
Length172 cmReference
Width92 cmReference
Height (steering wheel)119 cmReference
Gravely GEM 12.5 attachments
40" mid-mount mower deckReference
50" mid-mount mower deckReference
snowblowerReference
bladeReference
Electrical
GroundnegativeReference
Charging amps15Reference
Battery volts12Reference
Attachment overview
40" mid-mount mower deckReference
50" mid-mount mower deckReference
SnowblowerReference
BladeReference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
