Gravely lawn tractors

Gravely 817

The Gravely 817 is a 1977 garden tractor from the 800 Series by Gravely. It features a 16.5 hp Onan CCKA 816cc 2-cylinder gasoline engine with air-cooled horizontal-shaft opposed-twin design. The tractor has an 8-speed shaft-driven gear transmission with 8 forward and 4 reverse gears. It weighs 960 lbs (435 kg) and has dimensions of 81.5 inches length, 41.75 inches width, and 43 inches height. The 817 includes a 50" mid-mount mower deck with hydraulic lift, and attachments such as snowblowers and blades are available. Electrical system is 12 volts with negative ground.

Power16 hp

Founded50" deck

Model817

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Technical Specifications

Detailed specifications and technical data for Gravely 817

Engine

Type	gasoline
Model	Onan CCKA
Cooling	air-cooled horizontal-shaft opposed-twin
Starter	electric
Cylinders	2-cylinder
Fuel tank	5.3 gal (20.1 L)
Rated RPM	3600
Bore/Stroke	3.00x3.25 inches (76 x 83 mm)
Displacement	816 cc (49.8 ci)
Oil capacity	2 qts (1.9 L)
Power (gross)	16.5 hp (12.3 kW)
Starter volts	12

Dimensions

Width	41.75 inches (106 cm)
Height	43 inches (109 cm)
Length	81.5 inches (207 cm)
Weight	960 lbs (435 kg)
Shipping weight	960 lbs (435 kg)

Electrical

Ground	negative
Battery volts	12

Production

Type	Garden tractor
Year	1977
Series	800 Series
Manufacturer	Gravely

Attachments

Other	Garden tractors are capable of using tillers, plows, or other ground-engaging attachments.
48" Blade	front-mount, 48 inches width (121 cm)
38" Snow blower	Gravely 20981, front-mount, 38 inches width (96 cm), 250 lbs (113 kg)
44" Snow blower	Gravely 20982, front-mount, 44 inches width (111 cm), 260 lbs (117 kg)
Mower deck weight	252 lbs (114 kg)
Mower deck cut height	1.5 to 4 inch (3 to 10 cm)
50" mid-mount mower deck	3-blade with hydraulic lift
Mower deck cutting width	50 inches (127 cm)