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Lawn Tractor · 1972Unverified

Gravely 816

Name: Gravely 816
Brand: Gravely

Gravely 816 — 800 Series · 17 hp. Reference specifications; pending source verification.

The Gravely 816 is a lawn tractor model with an approximate engine power output of 17 hp, falling within the mid-range power spectrum for its category. Manufactured from 1972 to 1978, this model features a 2-cylinder petrol air-cooled engine and is equipped with two-wheel drive and an 8-speed gearbox. The operating weight of the Gravely 816 is 435 kg, and it is capable of handling operations spanning up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

17 hp

Weight

435 kg

Catalogue coverage

Variants represented

Richest spec table

56 rows

Recorded power

17 hp

Recorded weight

435 kg

Transmissions

8-speed gear

Production years

1972-1978

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

16.5HP Onan 816cc 2-cyl gasolineReference

16HP Onan 716cc 2-cyl gasolineReference

Fuel tank20.1 LReference

Onan CCKAReference

gasolineReference

2-cylinderReference

air-cooled horizontal-shaft opposed-twinReference

The CCKA was used for the first seven years of production on the 816, up until 1978.Reference

Displacement49.80 ciReference

Bore/Stroke76 x 83 mmReference

Power12.3 kWReference

Rated RPM3600Reference

StarterelectricReference

Starter volts12Reference

Sparkplug gap0.635 mmReference

Intake valve clearance0.279 mmReference

Exhaust valve clearance0.279 mmReference

Oil capacity1.9 LReference

Onan B43MReference

air-cooledReference

The B43M was used on the Gravely 816 for the final production year, in 1978.Reference

Displacement43.7 ciReference

Bore/Stroke83 x 67 mmReference

Power11.9 kWReference

Transmission

8-speed gearReference

Typeshaft-driven gearReference

Gears8 forward and 4 reverseReference

Oil capacity5.7 LReference

Oil typeSAE30Reference

Dimensions

Weight435 kgReference

Front tire16x6.50-8Reference

Rear tire23x8.50-12Reference

Lawn/turf front16x6.50-8Reference

Lawn/turf rear23x8.50-12Reference

Length191 cmReference

Width106 cmReference

Height109 cmReference

Shipping weight435 kgReference

Gravely 816 attachments

40" mid-mount mower deckReference

50" mid-mount mower deckReference

snowblowerReference

bladeReference

816 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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