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Gravely 816

Gravely 816 tractor
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The Gravely 816 is a garden tractor produced from 1972 to 1978 as part of the 800 Series. It features a choice of two Onan air-cooled 2-cylinder gasoline engines producing 16 to 16.5 hp. The tractor has an 8-speed shaft-driven gear transmission with 4 reverse speeds, two-wheel drive, and manual steering. It has a weight of 960 lbs and uses lawn/turf tires sized 16x6.50-8 front and 23x8.50-12 rear. Attachments include mid-mount mower decks, snowblowers, and blades, making it versatile for various lawn and garden tasks.
Gravely 816garden tractorOnan enginelawn tractor800 Series16.5 hp8-speed transmissionmower decksnowblower
Power16 hp
Founded40/50" deck
Model816

Technical Specifications

Detailed specifications and technical data for Gravely 816

Engine

Power 1:16.5 hp (12.3 kW)
Power 2:16 hp (11.9 kW)
Fuel tank:5.3 gal (20.1 L)
Starter 1:electric
Starter 2:electric
Rated RPM 1:3600
Rated RPM 2:3600
Bore/Stroke 1:3.00x3.25 inches (76 x 83 mm)
Bore/Stroke 2:3.25x2.62 inches (83 x 67 mm)
Displacement 1:816 cc (49.80 ci)
Displacement 2:716 cc (43.7 ci)
Engine options:16.5HP Onan 816cc 2-cyl gasoline, 16HP Onan 716cc 2-cyl gasoline
Engine detail 1:Onan CCKA gasoline 2-cylinder air-cooled horizontal-shaft opposed-twin
Engine detail 2:Onan B43M gasoline 2-cylinder air-cooled
Sparkplug gap 1:0.025 inches (0.635 mm)
Starter volts 1:12
Starter volts 2:12
Engine oil capacity:2 qts (1.9 L)
Engine detail 1 notes:The CCKA was used for the first seven years of production on the 816, up until 1978.
Engine detail 2 notes:The B43M was used on the Gravely 816 for the final production year, in 1978.
Intake valve clearance 1:0.011 inches (0.279 mm)
Exhaust valve clearance 1:0.011 inches (0.279 mm)

Dimensions

Width:41.75 inches (106 cm)
Height:43 inches (109 cm)
Length:75.5 inches (191 cm)
Rear tire:23x8.50-12
Front tire:16x6.50-8
Shipping weight:960 lbs (435 kg)

Electrical

Ground:negative
Battery AH:43
Battery Group:22F
Battery volts:12

Production

Type:Garden tractor
Series:800 Series
Years produced:1972 - 1978

Attachments

Note:Garden tractors are capable of using tillers, plows, or other ground-engaging attachments. TractorData does not list details of these attachments.
48" Blade:front-mount, 48 inches width (121 cm), Gravely
38" Snow blower:front-mount, 38 inches width (96 cm), 250 lbs (113 kg), Gravely 20981
44" Snow blower:front-mount, 44 inches width (111 cm), 260 lbs (117 kg), Gravely 20982
40" mid-mount mower deck:40 inches (101 cm), 3-blade, hydraulic lift, Gravely 21296
50" mid-mount mower deck:50 inches (127 cm), 3-blade, hydraulic lift, 262 lbs (118 kg), Gravely 221297

Transmission

Type:shaft-driven gear
Gears:8 forward and 4 reverse
Oil type:SAE30
Oil capacity:6 qts (5.7 L)

Related Models

Gravely 816S

Model:816S

Gravely 817

Model:817