Gravely lawn tractors
Gravely 816
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.
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. |
|---|---|
| 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) |