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Lawn Tractor · 1973Unverified

Gravely 812

Name: Gravely 812
Brand: Gravely

Gravely 812 — 800 Series · 12 hp. Reference specifications; pending source verification.

The Gravely 812 is a lawn tractor with a rated output of 12 hp, placing it in the middle of its class for power. Produced from 1973 to 1978, this model is equipped with a 1-cylinder petrol air-cooled engine, which drives two-wheel drive through an 8-speed gearbox. The listed weight of the Gravely 812 is 408 kg, and it is suitable for jobs 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

Richest spec table

48 rows

Recorded power

12 hp

Recorded weight

408 kg

Transmissions

8-speed gear

Production years

1973-1978

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerGravelyReference

Garden tractorReference

Two-wheel driveReference

Manual steeringReference

Open operator station.Reference

Engine

12HP Kohler 476cc 1-cyl gasolineReference

Fuel tank20.1 LReference

Kohler K301Reference

gasolineReference

1-cylinderReference

air-cooled horizontal-shaftReference

Displacement29.07 ciReference

Bore/Stroke83 x 86 mmReference

Power8.9 kWReference

Rated RPM3600Reference

StarterelectricReference

Starter volts12Reference

Sparkplug gap0.635 mmReference

Intake valve clearance0.229 mmReference

Exhaust valve clearance0.457 mmReference

Oil capacity2.4 LReference

Transmission

8-speed gearReference

Typeshaft-driven gearReference

Gears8 forward and 4 reverseReference

Oil capacity5.7 LReference

Oil typeSAE30Reference

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

Height109 cmReference

Shipping weight408 kgReference

Gravely 812 attachments

40" mid-mount mower deckReference

50" mid-mount mower deckReference

snowblowerReference

bladeReference

812 Serial Numbers

Location:In front of, and below, air cleaner.Reference

Electrical

GroundnegativeReference

Battery volts12Reference

Battery AH43Reference

Battery Group22FReference

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.

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