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| info | |
| 1978, 8000 Series, Garden tractor |
| Production | |
| Manufacturer: | Gravely |
| Type: | Garden tractor |
| Variants | |
| 8120: | mechanical lift |
| 8121: | hydraulic lift |
| Mechanical | |
| Steering: | manual |
| Brakes: | mechanical band |
| Cab: | Open operator station. |
| Capacity | |
| Fuel: | 5.3 gal 20.1 L |
| Hydraulic system: | 0.375 gal 1.4 L |
| Hydraulics | |
| Type: | open center |
| Capacity: | 0.375 gal 1.4 L |
| Pressure: | 1000 psi 69.0 bar |
| Power Take-off (PTO) | |
| Mid PTO: | independent |
| Clutch: | mechanical |
| Dimensions & Tires | |
| Front tire: | 16x7.50-8 |
| Rear tire: | 23x10.50-12 |
| Electrical | |
| Ground: | negative |
| Battery volts: | 12 |
| info | |
| 1978, 8000 Series, Garden tractor |
| Engine Detail | |
| Kohler, gasoline, 1-cylinder, air-cooled | |
| Displacement: | 476 cc 29.07 ci |
| Bore/Stroke: | 3.258x3.37 inches 83 x 86 mm |
| Power (gross): | 12 hp 8.9 kW |
| Starter: | electric |
| Starter volts: | 12 |
| Oil capacity: | 2 qts 1.9 L |
| info | |
| 1978, 8000 Series, Garden tractor |
| Transmission | |
| Type: | shaft-driven gear |
| Gears: | 8 forward and 4 reverse |
| Four gears (1-4) in two ranges (low/high) with directional control lever (forward/reverse). Reverse speeds are the same in high or low range. | |
| info | |
| 1978, 8000 Series, Garden tractor |
| Gravely 8121 Tires | |
| Lawn/turf front: | 16x7.50-8 |
| Lawn/turf rear: | 23x10.50-12 |