Gravely 812

The Gravely 812 is a 2WD garden tractor from the 800 series. This tractor was manufactured by Gravely from 1973 to 1978. The Gravely 812 is equipped with a 0.5 L (29.0 cu·in) single-cylinder gasoline engine and a shaft-driven gear transmission with 8 forward and 4 reverse gears.

The Gravely 812 garden tractor used the Kohler K301 engine. It is a 0.5 L, 476 cm2, (29.0 cu·in) single-cylinder natural aspirated gasoline engine with 85.7 mm (3.37 in) of the cylinder bore and 82.6 mm (3.25 in) of the piston stroke. This engine produced 12.1 PS (8.9 kW; 12.0 HP) at 3,600 rpm of output power.

The Gravely 812 is equipped with manual steering, an open operator station, and 20.1 liters (5.3 US gal.; 4.4 Imp. gal) fuel tank.

Following attachments are available for the Gravely 812 garden tractor:

  • Mid-mount Gravely 21296: 1,010 mm (40 in) mower deck with 3-blade and manual or hydraulic (optional) lift
  • Mid-mount Gravely 221297: 1,270 mm (50 in) mower deck with 3-blade and manual or hydraulic (optional) lift
  • Front-mount Gravely: 1,210 mm (48 in) blade
  • Front-mount Gravely 20981: 960 mm (38 in) snow blower
  • Front-mount Gravely 20982: 1,110 mm (44 in) snow blower

Gravely 812 Specifications

General Specifications
ModelGravely 812
Length1,910 mm (75.2 in)
Width920 mm (36.2 in)
Height1,090 mm (42.9 in)
Wheel base
Weight (shipping)408 kg (900 lbs)
Fuel tank capacity20.1 liters (5.3 US gal.; 4.4 Imp. gal)
Battery12V, 43Ah, Group 22F
Cabin typeOpen operator station
Engine modelKohler K301
Engine typeFour-stroke, air-cooled
Fuel typeGasoline
Displacement0.5 L, 476 cm2, (29.0 cu·in)
Bore and stroke85.7 mm X 82.6 mm (3.37 in X 3.25 in)
Horsepower12.1 PS (8.9 kW; 12.0 HP) at 3,600 rpm
Oil typeSF or SG
Oil capacity:2.4 L (2.5 US. qt, 2.1 Imp. qt.)
Spark plugChampion RH10
Transmission and chassis
Chassis4×2 2WD
Steering typeManual
Transmission model
Transmission typeShaft-driven gear
Gears8 forward and 4 reverse
Speed Forward: 13.5 kmh (8.4 mph) Reverse: 6.0 kmh (3.7 mph)
Transmission oil capacity5.7 L (1.5 US. gal, 1.3 Imp. gal.)
Front tires Lawn/turf: 16×6.50-8
Rear tires Lawn/turf: 23×8.50-12
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. In addition, the characteristics may vary depending on the modification and market. We do not provide advice on technical issues related to the any operation or repair. We do not recommend using provided information for repairing or spare parts ordering, use only official service manuals and spare-parts catalogs.

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