The Simplicity 4212 is a 2WD lawn tractor manufactured by Simplicity in Port Washington, Wisconsin, USA from 1987 to 1989. The Simplicity 4212 is equipped with a 0.5 L (28.6 cu·in) single-cylinder gasoline engine and one of two transmissions: a belt-driven gear transmission (4212G) with 5 forward and 1 reverse gears or a belt-driven hydrostatic transmission (4212H) with infinite forward and reverse gears.
The Simplicity 4212 lawn tractor used the Briggs & Stratton engine. It is a 0.5 L, 468 cm2, (28.6 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) at 3,600 rpm of output power.
The Simplicity 4212 is equipped with manual steering, an open operator station, and 8.3 liters (2.2 US gal.; 1.8 Imp. gal) fuel tank.
Following attachments are available for the Simplicity 4212 lawn tractor:
- Mid-mount Simplicity 910 mm (36 in) mower deck with 2-blades
- Front-mount Simplicity 1,060 mm (42 in) blade
- Front-mount Simplicity 910 mm (36 in) snowblower
Simplicity 4212 Specifications
| General Specifications | |
| Model | Simplicity 4212 |
| Length | 1,600 mm (63 in) |
| Width | 860 mm (33.9 in) |
| Height (steering wheel) | 1,000 mm (39.4 in) |
| Wheel base | 1,150 mm (45.3 in) |
| Ground clearance | Front axle: 220 mm (8.7 in) Rear axle: 150 mm (5.9 in) |
| Weight | – |
| Fuel tank capacity | 8.3 liters (2.2 US gal.; 1.8 Imp. gal) |
| Battery | 12V |
| Cabin type | Open operator station |
| Engine | |
| Engine model | Briggs & Stratton |
| Engine type | Four-stroke, air-cooled, inline |
| Cylinders | 1 |
| Fuel type | Gasoline |
| Displacement | 0.5 L, 468 cm2, (28.6 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) at 3,600 rpm |
| Starter | Electric |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Manual |
| Brakes | – |
| Transmission model | Peerless 801 |
| Transmission type | Belt-driven gear |
| Gears | 5 forward and 1 reverse |
| Speed | Forward: 6.4 kmh (4.0 mph) Reverse: 3.1 kmh (1.9 mph) |
| Transmission model | – |
| Transmission type | Belt-driven hydrostatic |
| Gears | Infinite forward and reverse |
| Speed | Forward: 7.6 kmh (4.7 mph) Reverse: 4.8 kmh (3 mph) |
| Tires | |
| Front tires | Lawn/turf: 15×6.00-6 |
| Rear tires | Lawn/turf: 18×8.50-8 |

Can you use 18 x 9.50 x 8 rear tires on the Simplicity 4212 instead of original 18 x 8.5 x 8?