The Bolens 3212H ST120 is a 2WD lawn tractor from the Suburban series. This tractor was manufactured by Bolens in Port Washington, Wisconsin, USA from 1988 to 1992. The Bolens 3212H ST120 is equipped with a 0.5 L (28.4 cu·in) single-cylinder gasoline engine and a belt-driven hydrostatic transmission with infinite forward and reverse gears.
The Bolens 3212H ST120 lawn tractor used the Briggs & Stratton 281707 engine. It is a 0.5 L, 465 cm2, (28.4 cu·in) single-cylinder natural aspirated gasoline engine with 87.0 mm (3.43 in) of the cylinder bore and 78.0 mm (3.07 in) of the piston stroke. This engine produced 12.1 PS (8.9 kW; 12.0 HP) of output power.
The Bolens ST120 is equipped with manual steering, disc brakes, an open operator station, and 18.9 liters (5 US gal.; 4.2 Imp. gal) fuel tank.
Following attachments are available for the Bolens 3212H ST120 lawn tractor:
- Mid-mount Bolens 910 mm (36 in) mower deck with 2-blade
- Front-mount Bolens 1,060 mm (42 in) blade
- Front-mount Bolens 960 mm (38 in) single-stage snow blower
- Front-mount Bolens 960 mm (38 in) two-stage snow blower
Bolens 3212G ST120 Specifications
| General Specifications | |
| Model | Bolens 3212H ST120 |
| Length | 1,750 mm (68.9 in) |
| Width | 870 mm (34.3 in) |
| Height | 1,070 mm (42.1 in) |
| Wheel base | 1,140 mm (44.9 in) |
| Weight | 210 kg (463 lbs) |
| Fuel tank capacity | 18.9 liters (5 US gal.; 4.2 Imp. gal) |
| Battery | 12V, 45Ah |
| Cabin type | Open operator station |
| Engine | |
| Engine model | Briggs & Stratton 281707 |
| Engine type | Four-stroke, air-cooled |
| Cylinders | 1 |
| Fuel type | Gasoline |
| Displacement | 0.5 L, 465 cm2, (28.4 cu·in) |
| Bore and stroke | 87.0 mm X 78.0 mm (3.43 in X 3.07 in) |
| Horsepower | 12.1 PS (8.9 kW; 12.0 HP) |
| Starter | Electric |
| Oil capacity: | 1.4 L (1.5 US. qt, 1.2 Imp. qt.) |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Manual |
| Brakes | Disc |
| Transmission model | Eaton 7 |
| Transmission type | Belt-driven hydrostatic |
| Gears | Infinite forward and reverse |
| Speed | Forward: 8.4 kmh (5.2 mph) Reverse: 4.5 kmh (2.8 mph) |
| Tires | |
| Front tires | Ag: 15×6.00-6 |
| Rear tires | Ag: 20×8.00-10 |
| PTO (Power take-off shaft) | |
| Middle PTO type | Independent with electric clutch |
| Middle PTO speed | – rpm |
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