The Gravely 8122 is a lawn tractor with a rated output of 12 hp, placing it in the middle of its class in terms of power. This model was manufactured between 1979 and 1985, and is equipped with a 1-cylinder petrol air-cooled engine. The tractor features two-wheel drive and an 8-speed gearbox, with a listed weight of 408 kg. It is designed for tasks on 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
12 hp
Weight
408 kg
Catalogue coverage
Variants represented
2
Richest spec table
46 rows
Recorded power
12 hp
Recorded weight
408 kg
Transmissions
8-speed gear
Production years
1979-1985
Verified variants
0
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Overview
ManufacturerGravelyReference
Garden tractorReference
Two-wheel driveReference
Manual steeringReference
Open operator station.Reference
Variants
8123hydraulic liftReference
8122manual liftReference
Engine
12HP Kohler 476cc 1-cyl gasolineReference
Fuel tank20.1 LReference
Kohler K301Reference
gasolineReference
1-cylinderReference
air-cooled horizontal-shaftReference
Displacement29.07 ciReference
Bore/Stroke86 x 83 mmReference
Power (gross)8.9 kWReference
StarterelectricReference
Starter volts12Reference
Oil capacity1.9 LReference
Transmission
8-speed gearReference
TypegearReference
Gears8 forward and 4 reverseReference
Oil capacity5.7 LReference
Oil type10W-40 SCReference
Four gears (1-4) in two ranges (low-high) with forward/reverse clutches. The directional clutch must be in neutral to shift gears or ranges.Reference
Dimensions
Weight408 kgReference
Front tire16x6.50-8Reference
Rear tire23x8.50-12Reference
Lawn/turf front16x6.50-8Reference
Lawn/turf rear23x8.50-12Reference
Length191 cmReference
Width92 cmReference
Height (steering wheel)109 cmReference
Shipping weight408 kgReference
Gravely 8122 attachments
40" front-mount mower deckReference
40" mid-mount mower deckReference
50" mid-mount mower deckReference
snowblowerReference
bladeReference
Electrical
GroundnegativeReference
Battery volts12Reference
Attachment overview
40" front-mount mower deckReference
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.
