1978
| 1978 |
| 8000 Series |
| Garden tractor |
Series:
| Series: | 8120 ← | 8121 | → 8160 |
| | 8127 ↓ | |
1978
| 1978 |
| 8000 Series |
| Garden tractor |
Series:
Production
| Production |
| Manufacturer | Gravely |
| Type | Garden tractor |
Gravely 8120 Engine
| Gravely 8120 Engine |
| 12HP Kohler 476cc 1-cyl gasoline |
| Fuel tank | 5.3 gal
20.1 L |
| Engine details ... |
Gravely 8120 Transmission
| Gravely 8120 Transmission |
| 8-speed gear |
| Transmission details ... |
Mechanical
| Mechanical |
| Chassis | 4x2 2WD |
| Steering | manual |
| Brakes | mechanical band |
| Cab | Open operator station. |
Power Take-off (PTO)
| Power Take-off (PTO) |
| Mid PTO | independent |
| Clutch | mechanical |
Dimensions & Tires
| Dimensions & Tires |
| Wheelbase | 48 inches
121 cm |
| Weight | 890 lbs
403 kg |
| Front tire | 16x7.50-8 |
| Rear tire | 23x10.50-12 |
| Full dimensions and tires ... |
Electrical
| Electrical |
| Ground | negative |
| Charging system | flywheel alternator |
| Charging amps | 15 |
| Battery volts | 12 |
| Battery AH | 42 |
Production
| Production |
| Manufacturer | Gravely |
| Type | Garden tractor |
Gravely 8121 Engine
| Gravely 8121 Engine |
| 12HP Kohler 476cc 1-cyl gasoline |
| Engine details ... |
1978
| 1978 |
| 8000 Series |
| Garden tractor |
Series:
| Series: | 8120 ← | 8121 | → 8160 |
| | 8127 ↓ | |
Engine Detail
| Engine Detail |
| Kohler K301 |
| gasoline |
| 1-cylinder |
| air-cooled horizontal-shaft |
| 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 |
Gravely 8121 Transmission
| Gravely 8121 Transmission |
| 8-speed gear |
| Transmission details ... |
1978
| 1978 |
| 8000 Series |
| Garden tractor |
Series:
| Series: | 8120 ← | 8121 | → 8160 |
| | 8127 ↓ | |
Transmission
| 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. |
Speeds
Mechanical
| Mechanical |
| Chassis | 4x2 2WD |
| Steering | manual |
| Brakes | mechanical band |
| Cab | Open operator station. |
Capacity
| Capacity |
| Fuel | 5.3 gal
20.1 L |
| Hydraulic system | 0.375 gal
1.4 L |
Hydraulics
| Hydraulics |
| Type | open center |
| Capacity | 0.375 gal
1.4 L |
| Pressure | 1200 psi
82.7 bar |
| Pump flow | 1.7 gpm
6.4 lpm |
Power Take-off (PTO)
| Power Take-off (PTO) |
| Mid PTO | independent |
| Clutch | mechanical |
Dimensions & Tires
| Dimensions & Tires |
| Wheelbase | 48 inches
121 cm |
| Weight | 890 lbs
403 kg |
| Front tire | 16x7.50-8 |
| Rear tire | 23x10.50-12 |
| Full dimensions and tires ... |
1978
| 1978 |
| 8000 Series |
| Garden tractor |
Series:
| Series: | 8120 ← | 8121 | → 8160 |
| | 8127 ↓ | |
Gravely 8121 Tires
| Gravely 8121 Tires |
| Lawn/turf front | 16x7.50-8 |
| Lawn/turf rear | 23x10.50-12 |
Electrical
| Electrical |
| Ground | negative |
| Charging system | flywheel alternator |
| Charging amps | 15 |
| Battery volts | 12 |
| Battery AH | 42 |
